Electrical Presentation.ppt
-
Upload
supriyo-mehta -
Category
Documents
-
view
233 -
download
0
Transcript of Electrical Presentation.ppt
-
8/14/2019 Electrical Presentation.ppt
1/54
3 November 2013 Mahendra Singh, Asstt. Director 11
-
8/14/2019 Electrical Presentation.ppt
2/54
3 November 2013 Mahendra Singh, Asstt. Director 2
-
8/14/2019 Electrical Presentation.ppt
3/54
3 November 2013 Mahendra Singh, Asstt. Director 3
Electrical Networks
Transmission
Generation
Distribution
-
8/14/2019 Electrical Presentation.ppt
4/54
3 November 2013 Mahendra Singh, Asstt. Director 4
TRANSMISSION LINE TOWERS
-
8/14/2019 Electrical Presentation.ppt
5/54
3 November 2013 Mahendra Singh, Asstt. Director 5
HORIZONTAL CONFIGURATION VERTICAL CONFIGURATION
-
8/14/2019 Electrical Presentation.ppt
6/54
3 November 2013 Mahendra Singh, Asstt. Director 6
SWITCHYARD/SUBSTAION
-
8/14/2019 Electrical Presentation.ppt
7/54
3 November 2013 Mahendra Singh, Asstt. Director 7
-
8/14/2019 Electrical Presentation.ppt
8/54
3 November 2013 Mahendra Singh, Asstt. Director 8
-
8/14/2019 Electrical Presentation.ppt
9/54
3 November 2013 Mahendra Singh, Asstt. Director 9
Funct ion of sw i tchyard/Substat ion
Protection of transmission system Controlling the exchange of energy
Voltage control and reactive power
compensation Securing the supply by providing
adequate line capacity and facility for
changing transmission paths
-
8/14/2019 Electrical Presentation.ppt
10/54
3 November 2013 Mahendra Singh, Asstt. Director 10
Data transmission via power line carrier forthe purpose of network monitoring,control
and protection
Determining the energy transfer throughtransmission lines and tie lines
Fault analysis and pin pointing the cause and
subsequent improvements
Establishing economic load distribution
-
8/14/2019 Electrical Presentation.ppt
11/54
3 November 2013 Mahendra Singh, Asstt. Director 11
Classification of
switchyard/substationBased on service:
Static substations
Converting substations
Switching substations
Power factor correction substationBased on service vo ltage:
EHV substations
Primary substations,
Secondary substations,
Distribution substations
Industrial substations
-
8/14/2019 Electrical Presentation.ppt
12/54
3 November 2013 Mahendra Singh, Asstt. Director 12
Based on type of mounting
Indoor type substation
Outdoor type substation
Based on configuration Conventional open terminal substations
Gas insulated substation(GIS)
Composite substations having combination ofthe above
-
8/14/2019 Electrical Presentation.ppt
13/54
3 November 2013 Mahendra Singh, Asstt. Director 13
SWITCHGEARS
Isolate or connect the electrical circuit betweensource to load
Making & breaking an electrical circuit under
normal or abnormal conditions It is also a safety device, which provided
protection against abnormal conditions. Allelectrical machines like Generator or Powertransformers, Motors & Transmission lines
SwitchGears like load break switch, earthswitch,isolators(disconnecting switch, circuitbreakers)
-
8/14/2019 Electrical Presentation.ppt
14/54
3 November 2013 Mahendra Singh, Asstt. Director 14
LOAD BREAK SWITCH(LBS)
LBS is an interrupting device, which can break the circuit at
7 to 8 times of the rated current Breaking the load current
Installed in the same circuit or back up by CBS
-
8/14/2019 Electrical Presentation.ppt
15/54
3 November 2013 Mahendra Singh, Asstt. Director 15
EARTH SWITCH
ES is connected between the line conductor andearth
Normally open
When the line is disconnected, the ES is closed , to
discharge the voltage trapped in the line ES is mounted on the frame of isolator
To avoid Accident
Before proceeding to the maintenance work thisvoltage is discharged to the earth by closing theearth switch
-
8/14/2019 Electrical Presentation.ppt
16/54
3 November 2013 Mahendra Singh, Asstt. Director 16
ISOLATORS(DISCONNECTING SWITCH)
Isolators Operate Under No Load Condition
Isolators are used for Breaking, Charging the Transmissionline
Isolators are provided on both side of the CB in order toensure Isolation(disconnection) of the CB from the mainparts for the purpose of Maintenance
Generally 3- Pole Isolators( 3 Identical Pole) are Used Simultaneous operation Is obtained By Interlocking Of The 3
Poles(all The 3 Pole,there Is A Common OperatingMechanism)
Operat ing MechanismElectrical Motor/Pneumatic System
Iso lators Types Single Break Switch,
centre Break Or Double Break Type
Pantograph Type
-
8/14/2019 Electrical Presentation.ppt
17/54
3 November 2013 Mahendra Singh, Asstt. Director 17
Center Break Disconnectors
-
8/14/2019 Electrical Presentation.ppt
18/54
3 November 2013 Mahendra Singh, Asstt. Director 18
Single Break Disconnectors
-
8/14/2019 Electrical Presentation.ppt
19/54
3 November 2013 Mahendra Singh, Asstt. Director 19
Single Break Disconnectors
-
8/14/2019 Electrical Presentation.ppt
20/54
3 November 2013 Mahendra Singh, Asstt. Director 20
-
8/14/2019 Electrical Presentation.ppt
21/54
3 November 2013 Mahendra Singh, Asstt. Director 21
-
8/14/2019 Electrical Presentation.ppt
22/54
3 November 2013 Mahendra Singh, Asstt. Director 22
CIRCUIT BREAKER
Based upon current interrupt ion & arc quench ing
Types
Air Circuit Breaker(ACB)
Air blast Circuit Breaker(ABCB)
Bulk Oil Circuit Breaker(BOCB)
Minimum Oil Circuit Breaker(MOCB)
Sulphur Hexa Fluoride(SF6)
Ultra Vacuum Breaker(VCB)
-
8/14/2019 Electrical Presentation.ppt
23/54
3 November 2013 Mahendra Singh, Asstt. Director 23
-
8/14/2019 Electrical Presentation.ppt
24/54
3 November 2013 Mahendra Singh, Asstt. Director 24
-
8/14/2019 Electrical Presentation.ppt
25/54
3 November 2013 Mahendra Singh, Asstt. Director 25
-
8/14/2019 Electrical Presentation.ppt
26/54
3 November 2013 Mahendra Singh, Asstt. Director 26
-
8/14/2019 Electrical Presentation.ppt
27/54
3 November 2013 Mahendra Singh, Asstt. Director 27
-
8/14/2019 Electrical Presentation.ppt
28/54
3 November 2013 Mahendra Singh, Asstt. Director 28
-
8/14/2019 Electrical Presentation.ppt
29/54
3 November 2013 Mahendra Singh, Asstt. Director 29
-
8/14/2019 Electrical Presentation.ppt
30/54
3 November 2013 Mahendra Singh, Asstt. Director 30
INTERLOCK BETWEEN CB& ISOLATOR
Isolators can not operate unless the CB isopen
Bus-I& bus-II isolator can not be closedsimultaneously
Isolator can not operate when earth
switch on Only one bay(one feeder load) can be
taken on by-pass or transfer bus
-
8/14/2019 Electrical Presentation.ppt
31/54
3 November 2013 Mahendra Singh, Asstt. Director 31
PROTECTIVE FUSE &RELAYS
An automatic device and it senses the
abnormal conditions (Detect the fault)in the
power system and gives alarm intern isolate
the unhealthy system
Supply the information to the CB for Circuit
interruption
RELAY CIRCUIT
-
8/14/2019 Electrical Presentation.ppt
32/54
3 November 2013 Mahendra Singh, Asstt. Director 32
RELAY CIRCUIT
-
8/14/2019 Electrical Presentation.ppt
33/54
3 November 2013 Mahendra Singh, Asstt. Director 33
-
8/14/2019 Electrical Presentation.ppt
34/54
3 November 2013 Mahendra Singh, Asstt. Director 34
INSTRUMENT TRANSFORMERS
Current Transformers(CTs)are used to stepdown the currents for the purpose ofmeasurement,protection and control
Secondary ratings 1 or 5A
For ex. 10,000/5A , 100/1A
Voltage Trans form er(VTS)
Secondary ratings 100V,110V,115V
For ex. 400KV/110V, 230KV/115V
-
8/14/2019 Electrical Presentation.ppt
35/54
3 November 2013 Mahendra Singh, Asstt. Director 35
-
8/14/2019 Electrical Presentation.ppt
36/54
3 November 2013 Mahendra Singh, Asstt. Director 36
-
8/14/2019 Electrical Presentation.ppt
37/54
3 November 2013 Mahendra Singh, Asstt. Director 37
-
8/14/2019 Electrical Presentation.ppt
38/54
3 November 2013 Mahendra Singh, Asstt. Director 38
CARRIER CURRENT EQUIPMENT ( LINE OR
WAVE TRAP)
It is required for communication
Line trap is connected between
transmission line and coupling capacitor
-
8/14/2019 Electrical Presentation.ppt
39/54
3 November 2013 Mahendra Singh, Asstt. Director 39
-
8/14/2019 Electrical Presentation.ppt
40/54
3 November 2013 Mahendra Singh, Asstt. Director 40
-
8/14/2019 Electrical Presentation.ppt
41/54
3 November 2013 Mahendra Singh, Asstt. Director 41
LIGHTNING ARRESTORS
It is a device designed to protect electrical
equipment from lightning
10KA to 90KA 2000KV
-
8/14/2019 Electrical Presentation.ppt
42/54
3 November 2013 Mahendra Singh, Asstt. Director 42
-
8/14/2019 Electrical Presentation.ppt
43/54
3 November 2013 Mahendra Singh, Asstt. Director 43
Control cable
Modern power system is very complex, it isnecessary to provide automatic operation andinterlocks
SWITCH BOARDS
It consists of meters,relays and controlequipments
CONTROL ROOM
It consist of switchboard,carrier currentequipment,batteries
-
8/14/2019 Electrical Presentation.ppt
44/54
3 November 2013 Mahendra Singh, Asstt. Director 44
-
8/14/2019 Electrical Presentation.ppt
45/54
3 November 2013 Mahendra Singh, Asstt. Director 45
-
8/14/2019 Electrical Presentation.ppt
46/54
3 November 2013 Mahendra Singh, Asstt. Director 46
-
8/14/2019 Electrical Presentation.ppt
47/54
3 November 2013 Mahendra Singh, Asstt. Director 47
-
8/14/2019 Electrical Presentation.ppt
48/54
3 November 2013 Mahendra Singh, Asstt. Director 48
Power Transformer
It is used to step up / step down the voltage
The voltage rating 15 or 15.75kV/230 or
400kV (210MW)
In TPS,GT(step up t/f)
UAT,UST, ST,SAT,SST,,ET(step down
transformer)
ICT( step up and step down)
-
8/14/2019 Electrical Presentation.ppt
49/54
3 November 2013 Mahendra Singh, Asstt. Director 49
-
8/14/2019 Electrical Presentation.ppt
50/54
3 November 2013 Mahendra Singh, Asstt. Director 50
Earthing System
Security and safety of the personnel andequipment
ELECTRICAL SHOCKFlow of current in the human body
Poor ins ulation apparatus
Open & short ci rcu i t due to equipment fai lure
Faul ty o r poo r qual i ty wires
Incorrect u se of electr ic al gadgets(lack of
knowledge)
l ightn ing
SINGLE BUS BAR ARRANGMENT
-
8/14/2019 Electrical Presentation.ppt
51/54
3 November 2013 Mahendra Singh, Asstt. Director 51
SINGLE BUS BAR ARRANGMENT
-
8/14/2019 Electrical Presentation.ppt
52/54
3 November 2013 Mahendra Singh, Asstt. Director 52
SINGLE BUS BAR WITH SECTIONALIZER
-
8/14/2019 Electrical Presentation.ppt
53/54
3 November 2013 Mahendra Singh, Asstt. Director 53
BREAKER AND A HALF SCHEME
-
8/14/2019 Electrical Presentation.ppt
54/54
3 November 2013 Mahendra Singh Asstt Director 54