Presentation on 132 kv gss

A PowerPoint presentation on 132 kV G.S.S sitapura, Jaipur Rajasthan

1. C O N T E NT S SUBSTATION CIRCUIT BREAKER PROTECTIVE RELAY LIGHTNING ARRESTERS BUS BAR ISOLATOR CONTROL ROOM TRANSFORMER CIRCUIT PROTECTION SYSTEM P.L.C.C BETTERY ROOM SINGLE LINE DIGRAM

2. An electrical substation is a subsidiary station of a transmission and distribution system where voltage is transformed from high to low using transformers. Electric power may flow through several substations between generating plant and consumer , and may be changed in voltage in several steps . A substation is a part of an electrical generation, transmission, and distribution system. A substation is an assembly of apparatus, which transform the characteristics of electrical energy from one form to another SUBSTATION

3. 2. CIRCUIT BREAKER A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit . It is used to protect the circuit. Circuit breakers works on no load condition. There are different arc quenching medium:- Air blast Oil SF6 gas vacuum

4. SF6 circuit breaker Vacuum circuit breaker

5. 3. PROTOCTIVE RELAY The protective relay ensures the protection of circuit from any damage which might otherwise cause by fault.

6. 4. LIGHTNING ARRESTER Lightning arrestor is a device, which protects the overhead lines and other electrical apparatus via transformer from overhead voltages and Lightning . An electric discharge between cloud and earth or between cloud and the charge centres of the same cloud is known as lightning . No charging or testing operation is required before placing them in service. Lightning arrestors provide protection against travelling waves which may reach the terminal apparatus.

7. Lightning is a form of visible discharge of electricity between rain clouds or between a rain cloud and the earth.

8. 5. BUS BARS The bus is a line in which the incoming feeders come into and get into the instruments for further step up or step down.

9. THERE ARE TWO TYPES OF BUS BARS:- MAIN BUS BAR AUXILIARY BUS BAR

10. 6. ISOLATOR An isolator is a type of switch used in electrical circuit and works on no load condition.

11. SWITCHES:- A switch is used in an electric circuit as a device for making or breaking the electric circuit in a convenient way.

12. 7 . CONTROL ROOM In GSS the separate control room provided for remote protection of 132 KV switch yards, transformer, incoming feeder, outgoing feeders etc. The control room is nerve canter of a power station. Control panel contain :- Meters Control switches Recorders Measuring instruments Energy meter Frequency meter Wattmeter Voltmeter

13. 8 . TRANSFORMER A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductor . Parts of power Transformer : Core Winding Main Oil Tank and Conservator Tank Breather buchholz Relay Bushings Tap Changing

14. It is a static device used to step up and down the voltage without change in frequency.

15. 9 . CIRCUIT PROTECTION SYSTEM It is a panel with different switches (N.O , N.C, toggle switch etc.) using for protection of circuit.

16. 10. POWER LINE CARRIER COMMUNICATION Power line carrier communication is used for sending and receiving information bearing signals over power lines.

17. 11. BATTERY ROOM In GSS, a separate dc supply is maintained for signalling remote position control, alarm circuit etc. There is a battery room which has 55 dc batteries of 2 volts. Therefore dc power is available for functioning of control panels.

18. Battery is the heart of power system control and protection as all the power system protection equipment and the communication equipment works on DC supply.

19. 12. SINGLE LINE DIAGRAM