Power Transformer Transients& EMTP

41
03/29/22 03/29/22 1 Power Transformer Power Transformer Transients& EMTP Transients& EMTP Aljankawey, Abdualah Aljankawey, Abdualah 3201836 3201836 EE6643 EE6643 Supervisor Dr. A.M. Supervisor Dr. A.M. Sharaf Sharaf

description

Power Transformer Transients& EMTP. Aljankawey, Abdualah 3201836 EE6643 Supervisor Dr. A.M. Sharaf. Power system problems. 1 Harmonic Distortion . Power system problems. 1 Harmonic Distortion 2 Switching Transients. Power system problems. 1 Harmonic Distortion - PowerPoint PPT Presentation

Transcript of Power Transformer Transients& EMTP

Page 1: Power Transformer Transients&  EMTP

042223042223 11

Power Transformer Power Transformer Transientsamp EMTP Transientsamp EMTP

Aljankawey Abdualah Aljankawey Abdualah 32018363201836EE6643EE6643

Supervisor Dr AM SharafSupervisor Dr AM Sharaf

042223042223 22

1 Harmonic Distortion1 Harmonic Distortion

Power system problems Power system problems

042223042223 33

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

Power system problemsPower system problems

042223042223 44

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

Power system problemsPower system problems

042223042223 55

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 66

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

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L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 2: Power Transformer Transients&  EMTP

042223042223 22

1 Harmonic Distortion1 Harmonic Distortion

Power system problems Power system problems

042223042223 33

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

Power system problemsPower system problems

042223042223 44

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

Power system problemsPower system problems

042223042223 55

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 66

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 3: Power Transformer Transients&  EMTP

042223042223 33

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

Power system problemsPower system problems

042223042223 44

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

Power system problemsPower system problems

042223042223 55

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 66

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 4: Power Transformer Transients&  EMTP

042223042223 44

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

Power system problemsPower system problems

042223042223 55

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 66

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 5: Power Transformer Transients&  EMTP

042223042223 55

1 Harmonic Distortion1 Harmonic Distortion

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 66

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 6: Power Transformer Transients&  EMTP

042223042223 66

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 7: Power Transformer Transients&  EMTP

042223042223 77

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 8: Power Transformer Transients&  EMTP

042223042223 88

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transients2 Switching Transients 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations

Power system problemsPower system problems

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 9: Power Transformer Transients&  EMTP

042223042223 99

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges

2 Switching Transient2 Switching Transient 6 Power Sags6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 10: Power Transformer Transients&  EMTP

042223042223 1010

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 11: Power Transformer Transients&  EMTP

042223042223 1111

1 Harmonic Distortion1 Harmonic Distortion 5 Power Surges5 Power Surges 9 Power Failures9 Power Failures

2 Switching Transients2 Switching Transients 6 Power Sags 6 Power Sags 10 power transformer transient 10 power transformer transient

3 Line Noise3 Line Noise 7 High Voltage Spikes7 High Voltage Spikes

4 Frequency Variations 4 Frequency Variations 8 Brownouts8 Brownouts

Power system problemsPower system problems

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 12: Power Transformer Transients&  EMTP

042223042223 1212

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 13: Power Transformer Transients&  EMTP

042223042223 1313

Power transformer transientsPower transformer transients

transient in power transformer happened transient in power transformer happened when hellipwhen hellip

- Inrush Current - Inrush Current - Short Circuit fault - Short Circuit fault - Over voltage - Over voltage

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 14: Power Transformer Transients&  EMTP

042223042223 1414

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 15: Power Transformer Transients&  EMTP

042223042223 1515

Inrush current Inrush current The saturation current that can occur The saturation current that can occur

when transformers are first switched into when transformers are first switched into serves serves

core saturation produces inrush core saturation produces inrush 1-Power switched off at Bmx1-Power switched off at Bmx

2- flux density Br2- flux density Br

3- power switched back on 3- power switched back on

4- flux density = 2Bmx+ Br4- flux density = 2Bmx+ Br

5- Core saturation =5- Core saturation =2Bmx +Br- Bsat 2Bmx +Br- Bsat

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 16: Power Transformer Transients&  EMTP

042223042223 1616

Inrush currant in power transformer Inrush currant in power transformer

1- calculation parameters1- calculation parameters Peak value Peak value Wave ShapeWave Shape Integral of I^2 dt (energy parameter )Integral of I^2 dt (energy parameter ) Mix di dt Mix di dt Min ratio of 2Min ratio of 2ndnd harmonic peak harmonic peak

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 17: Power Transformer Transients&  EMTP

042223042223 1717

ContCont

2- 2- Effective of transformer design parametersEffective of transformer design parameters

Number of phases and winding connection Number of phases and winding connection

Size of transformer Size of transformer Design induction Design induction (( peak inrush increase with induction)peak inrush increase with induction)

22nd nd harmonics peak decrease with harmonics peak decrease with induction induction

Core material Geometry design induction and Core material Geometry design induction and type of joint type of joint

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 18: Power Transformer Transients&  EMTP

042223042223 1818

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 19: Power Transformer Transients&  EMTP

042223042223 1919

Cont Cont The inrush current The inrush current

determines the determines the rating of input rating of input Switches relays Switches relays Fuses connector Fuses connector and cables and cables

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 20: Power Transformer Transients&  EMTP

042223042223 2020

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 21: Power Transformer Transients&  EMTP

042223042223 2121

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 22: Power Transformer Transients&  EMTP

042223042223 2222

Minimum ratio of 2Minimum ratio of 2ndndharmonic peakharmonic peak

Use these value to distinguish between Use these value to distinguish between inrush current and short circuit current inrush current and short circuit current

this minimum ratio occur when the this minimum ratio occur when the transformer is energized at voltage angletransformer is energized at voltage angle

= 0 which also condition that result in = 0 which also condition that result in maximum peak inrush current value maximum peak inrush current value

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 23: Power Transformer Transients&  EMTP

042223042223 2323

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 24: Power Transformer Transients&  EMTP

042223042223 2424

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 25: Power Transformer Transients&  EMTP

042223042223 2525

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 26: Power Transformer Transients&  EMTP

042223042223 2626

EMTP EMTP Engineering used EMTP program to simulate Engineering used EMTP program to simulate

transients Electrical power system transients Electrical power system EMPT input output and plotting EMPT input output and plotting Switched and circuit breaker model Switched and circuit breaker model Capacitor Switching Capacitor Switching Transformer modelTransformer model Transient recovery voltage Transient recovery voltage Lighting transient and transmission line modelLighting transient and transmission line model

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 27: Power Transformer Transients&  EMTP

042223042223 2727

Advantages Advantages Simplicity Simplicity Numerical stabilityNumerical stability EMTP built in modelsEMTP built in models

- - Basic componentsBasic components- - signal and multi-phase lumped parameter componentssignal and multi-phase lumped parameter components- - signal phase distributed parameter componentssignal phase distributed parameter components- ideal ( transformer switches and sources )- ideal ( transformer switches and sources )

Overhead linesOverhead lines- POWER Transformer - POWER Transformer - Rotating Machines- Rotating Machines- control system - control system

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 28: Power Transformer Transients&  EMTP

042223042223 2828

EMTP built-in modelsEMTP built-in models1048698 1048698 Basic componentsBasic components1048698 1048698 Single- and multi-phase lumped parameterSingle- and multi-phase lumped parameterComponentsComponents1048698 1048698 Single-phase distributed parameter componentsSingle-phase distributed parameter components1048698 1048698 Ideal and storable transformersIdeal and storable transformers1048698 1048698 Ideal switchesIdeal switches1048698 1048698 Ideal sourcesIdeal sources1048698 1048698 Overhead lines and insulated cablesOverhead lines and insulated cables(frequency-dependent models (frequency-dependent models Power transformersPower transformers1048698 1048698 Rotating machinesRotating machines1048698 1048698 Control systemsControl systems

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 29: Power Transformer Transients&  EMTP

042223042223 2929

EMTP- Package includes- EMTP- the EngineEMTP- Package includes- EMTP- the Engine- Networks the GUI- Networks the GUI

- Scope View the Output Processor- Scope View the Output Processor

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 30: Power Transformer Transients&  EMTP

042223042223 3030

Digital simulation ( EX)Digital simulation ( EX)

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 31: Power Transformer Transients&  EMTP

042223042223 3131

EMTP- key featuresEMTP- key features Reference in transients simulationReference in transients simulation Solution for large networksSolution for large networks Provide detailed modeling of the network component Provide detailed modeling of the network component

including control linear and non-linear elementsincluding control linear and non-linear elements Open architecture coding that allows users customization Open architecture coding that allows users customization

and implementation of sophisticated modelsand implementation of sophisticated models New steady-state solution with harmonics New steady-state solution with harmonics Automatic initialization from steady-state solution Automatic initialization from steady-state solution New capability for solving detailed semiconductor models New capability for solving detailed semiconductor models Simultaneous switching options for power electronics Simultaneous switching options for power electronics

applicationsapplications

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 32: Power Transformer Transients&  EMTP

042223042223 3232

EMTP- ApplicationsEMTP- Applications

Lightning surgesLightning surges Switching surgesSwitching surges Temporary over voltagesTemporary over voltages Insulation coordinationInsulation coordination Power electronics and Power electronics and

FACTSFACTS General control system General control system

designdesign Power Quality issuesPower Quality issues Capacitor bank switchingCapacitor bank switching Series and shunt Series and shunt

resonancesresonances

Motor startingMotor starting Steady-State analysis of Steady-State analysis of

unbalanced systemunbalanced system Distribution networks and Distribution networks and

Distributed generationDistributed generation Power system dynamic Power system dynamic

and load modelingand load modeling Sub synchronous Sub synchronous

resonance and shaft resonance and shaft stressesstresses

Power system protection Power system protection issuesissues

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 33: Power Transformer Transients&  EMTP

042223042223 3333

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

1 1

2 2

3 3

4 4

5 5

wwwemtpcomEMTP-RV Advanced Practical Applications

Variable Static Load Modelingand Machine Dynamics

Wind Power amp Multi-Machine Transient Stability of Large Networks

Arc Instability behind ShuntReactor Breaker Failures

Lightning Strike Near a 765 kV GIS

765 kV River Crossing with theSpecial Use of Line Arresters

SM

SM1

m

138kV450MVA

Ef

EfssPe

Omega_1

ASM S

ASM1

66kV11000hp

SpeedTm

Windmil l

DEV2

S ASM

DEV4

DEV6

+

+d

q

DPIM1

m

025hp

T m

SpeedT eg

Single-phase Induction Machine

C L

SV

C_1

NpNqKpKq

Z Dist

MW MXPF

VaVbVc

60 Hz only

DEV9

NpNqKpKq

MWMXPF

VaVbVc

60 Hz only

DEV10

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 34: Power Transformer Transients&  EMTP

042223042223 3434

Simulation OptionsSimulation Options

Load-Flow solution Load-Flow solution

Steady-state solution Steady-state solution

Time-domain solutionTime-domain solution

Frequency scan solutionFrequency scan solution

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 35: Power Transformer Transients&  EMTP

042223042223 3535

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 36: Power Transformer Transients&  EMTP

042223042223 3636

Built-in LibrariesBuilt-in Librariesadvancedclf Provides a set of advanced power electronic devices

Pseudo Devicesclf

Provides special devices such as page connectors The port devices are normally created using the menu ldquoOptiongtSubcircuitgtNew Port Connectorrdquo they are available in this library for advanced users

RLC branchesclf Provides a set of RLC type power devices Workclf This is an empty library accessible to users controlclf The list of primitive control devices

control devices of TACSclf This control library is provided for transition from EMTP-V3 It imitates EMTP-V3 TACS functions

control functionsclf Various control system functions control of machiesclf Exciter devices for power system machines flip flopsclf A set of flip-flop functions for control systems

hvdcclf Collection of dc bridge control functions Documentation is available in the subcircuit

linesclf Transmission lines and cables machinesclf Rotating machines

metersclf Various measurement functions including sensors for interfacing control device signals with power device signals

meters periodicclf Meters for periodic functions nonlinearclf Various nonlinear electrical devices optionsclf EMTP Simulation options plot functions and other data management functions phasorsclf Control functions for manipulating phasors sourcesclf Power sources switchesclf Switching devices symbolsclf These are only useful drawing symbols no pins transformationsclf Mathematical transformations used in control systems transformersclf Power system transformers

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 37: Power Transformer Transients&  EMTP

042223042223 3737

Built-in Library of ExamplesBuilt-in Library of Examples

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 38: Power Transformer Transients&  EMTP

042223042223 3838

Scope ViewScope ViewScope View is a data acquisition and signal processing softwareadapted very well for visualisation and analysis of EMTP-RV resultsIt may be used to simultaneously load view and process data from applications such as EMTP-RV MATLAB and Comtrade format files

Multi-source data importation Cursor region information

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 39: Power Transformer Transients&  EMTP

042223042223 3939

Scope ViewScope View (Cant)(Cant)

Function editor of Scope View Typical mathematical post-processing

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 40: Power Transformer Transients&  EMTP

042223042223 4040

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

K

K

L

L

M

M

N

N

O

O

P

P

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

1 10 0

2900 mm

2x x

g = 12 mm

x= 710 mm

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References
Page 41: Power Transformer Transients&  EMTP

042223042223 4141

References References AMSharaf and Pierre Kreidi Modulated power filter for Signal AMSharaf and Pierre Kreidi Modulated power filter for Signal

phase inrush transient loads phase inrush transient loads AMSharaf And Pierre Kreidi modulated low cost power AMSharaf And Pierre Kreidi modulated low cost power

filter for signal phase inrush Type transient loadsfilter for signal phase inrush Type transient loads A P Sakes Meliopoulos power system Grounding and A P Sakes Meliopoulos power system Grounding and

transients transients IEEE Standard Transformer Committee Oct 15 2001 FloridaIEEE Standard Transformer Committee Oct 15 2001 Florida wwwwww presentation in transinatInrush Seminar Orlandohtm

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

IEE ProcGener Trawsnr Dislrib Vol 148 No 5 September 2001

  • Power Transformer Transientsamp EMTP
  • Power system problems
  • Power system problems
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Power transformer transients
  • Slide 14
  • Inrush current
  • Inrush currant in power transformer
  • Cont
  • Slide 18
  • Cont
  • Slide 21
  • Minimum ratio of 2ndharmonic peak
  • Slide 23
  • Slide 24
  • Slide 25
  • EMTP
  • Advantages
  • EMTP built-in models
  • EMTP- Package includes- EMTP- the Engine - Networks the GUI - Scope View the Output Processor
  • Digital simulation ( EX)
  • EMTP- key features
  • EMTP- Applications
  • Slide 33
  • Simulation Options
  • Slide 35
  • Built-in Libraries
  • Built-in Library of Examples
  • Scope View
  • Scope View (Cant)
  • Slide 40
  • References