DIGITAL INTERFACE FOR IEC 61850 REQUIREMENTS … session 3/PDFs... · Test bench for Merging Unit...
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DIGITAL INTERFACE FOR IEC 61850 REQUIREMENTS AND ACCURACY DEFINITIONS M. Gurbiel J. Blumschein, C. Dzienis, G. Lang, Z. Styczynski
Transcript of DIGITAL INTERFACE FOR IEC 61850 REQUIREMENTS … session 3/PDFs... · Test bench for Merging Unit...
DIGITAL INTERFACE FOR IEC 61850REQUIREMENTS AND ACCURACY DEFINITIONS
M. GurbielJ. Blumschein, C. Dzienis, G. Lang, Z. Styczynski
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 2
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Table of contentsMotivationMerging Unit System and its componentsMerging Unit System’s errorsMerging Unit accuracy classes for each of the componentsTest bench for Merging Unit testing and test exampleOverall class calculationSummary
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 3
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
MotivationNew communication solution for substation automation – IEC 61850Digital interface between analogue measurements and substation devicesDigital interface accuracy importanceAccuracy classes as a source of information of merging unit system measurement uncertainties
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 4
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Merging Unit System
Tran
smitt
ing
syst
em c
lass
Dig
ital c
lass
Inst
rum
ent
trans
form
er
clas
s
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 5
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Merging Unit’s errors
( ) ( ) ( ))(max)(max)(max 1111 fAfAfAA QMM Δ+Δ+=Δ
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 6
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Merging Unit’s errors
δS - synch. error
δC - phase displacement characteristic uncertainty error
Δδ
f
Δδ
f
calibration
a) b)
Total angle difference
Total angle difference
Class B
Class A
δP - phase displacement characteristic
( ) ( ) ( ))(max)(max)(max 1111 fff PCS δδδδ ++=Δ
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 7
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
0 0.25 0.5 0.75 1 1.25 1.50
0.1
0.2
0.3
0.4
Length [km]
ΔA
[%]
50 Hz 500 Hz 1000 Hz 1500 Hz 2000 Hz 2500 Hz
class 0.1error<0.1%
class 0.5error<0.5%
class 0.2error<0.2%
0 0.25 0.5 0.75 1 1.25 1.5-50
-40
-30
-20
-10
0
Lengh [km]
Δδ
[min
]
50 Hz 500 Hz 1000 Hz 1500 Hz 2000 Hz 2500 Hz
class 0.1Δδ<5min
class 0.2Δδ<10min
class 0.5Δδ<30min
class 1.0Δδ<40min
Merging unit’s accuracy classes
60 60 90 180 1.001.001.503.001.0
30 30 45 90 0.500.500.751.500.5
10 10 15 300.200.200.350.750.2
5 5 8 150.100.100.200.400.1
120100205120100205
+/- angle difference at percentage of rated current [min]
+/- current error at percentage of rated current [%]Class
3.003.003.003.0
4040401.001.001.001.0
3030300.500.500.500.5
1010100.200.200.200.2
5550.100.100.100.1
1201008012010080
+/- angle difference at percentage of rated voltage [min]
+/- voltage error at percentage of rated voltage [%]Class
Class assignation exam
ple(coax-cable analysis –
voltage signal)
IEC 60044-1 Instrument transformers - Part 1: Current transformers, Feb 1, 2003
IEC 60044-2 Instrum
ent Transformers -Part 2:
Inductive Voltage Transformers, Feb 1, 2003
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 8
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Merging Unit test bench
Test bench capable of testing two MUssimultaneouslyPPS and LAN-time source via GPS receiverPC with IEC-61850-9-2 protocol reader
Arbitrary waveform generator allows for the execution of static and dynamic scenariosProgrammable reference measurement device
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 9
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Merging Unit tests - exampleTest scenarios:
Scenarios that reflect the power network operating statesDynamic scenarios for MU response assessment to transient power network states
Merging unit tests are the basis for accuracy class calculation
20 40 60 80 100 120
0.1
0.2
0.3
0.4
0.5
0.6
Curr
ent r
elat
ive
erro
r [%
]
Magnitude level [%IN
] (IN
=1A)
Ph#1Ph#2Ph#3
20 40 60 80 100 120-25
-20
-15
-10
-5
Curr
ent a
ngle
diff
eren
ce [m
in]
Magnitude level [%IN
] (IN
=1A)
Ph#1Ph#2Ph#3
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 10
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
Overall class calculation
Accuracy classes of each part of merging unit systemOverall class calculation for MU system class assignation
MUdigital
cablertransforme
CC
CC
≤+
++
0.1, 0.2, 0.5, 1.0, 3.0, 5.0
Current
0.1, 0.2, 0.5, 1.0, 3.0
VoltageClass
Session 3 – Paper 0843DIGITAL INTERFACE FOR IEC 61850 - REQUIREMENTS ANDACCURACY DEFINITIONS 11
20th International Conference on Electricity DistributionPrague, 8 – 11 June 2009
SummaryThe class definitions for all MU parts should allow for an easy comparison of each part and a calculation of the overall class of the merging unit system
Class definition can be based upon the class definition of the instrument transformers
Each part of the merging unit system may be assigned with an accuracy class and then the overall class can be calculated
The scenarios for testing the merging unit must be properly defined to reflect the power network operating states
Thank you for your attention
