1. Department of Electrical Engineering
presentation On
“400 KV GSS, BIKANER”
Submitted in partial fulfillment
for the award of the Degree of
BACHELOR OF TECHNOLOGY
Rajasthan Technical University, Kota) In
Department of Electrical Engineering   
Submitted to: Submitted by:

2. BASIC INTRODUCTION OF ELECTRICAL SYSTEM
by:-BHUPENDRA SINGH

3. OVER VIEW OF GSS INTRODUCTION PURPOSE OF GSS COMPONANTS
1st grid sub station of raj.
(transformer rating -315mva)
Established cost: cr
Length of 400kv line:- 161 km
PURPOSE OF GSS
COMPONANTS

4. INDEX Over view of GSS Signal Line Diagram Lighting Arrester
Capacitor Voltage Transformer(CVT)
Transformer
Protective Relay
Circuit Breaker-Air Blast & SF6 CB
Isolator
Insulators
Current Transformer
Potential Transformer
Control Panel &PLCC
Battery Room Description

5. SLD OF GSS

6. 400KV GSS , BIKANER

7. LIGHTING ARRESTER WHAT IS LIGHTING ARRESTER??
It is a safety valve, provide a low impedance path to ground
For current comes from the lighting stokes or transient voltage and restore the normal condition

8. CVT Application 1- Voltage measuring 2-Flitering
3-To operate a protective relay
Location at sub station

9. TRANSFORMER Introduction Principal of Transformer
Diff. b/w Power & Distribution Trans.
Brief Idea of Auto Transformer
-Definition
-Advantages
-Disadvantages

10. PROTECTIVE RELAY & WAVE TRAP
-Function of Relay
-Purpose of Relay
WHAT IS WAVE TRAP ??
-Wave Traps are simply resonant circuits that produce a high impedance against PLCC carrier frequencies (24kHz - 500kHz) while allowing power frequency (50Hz – 60Hz).
-With CVT it is used for filtering

11. INSULATOR The insulators are connected
with the cross arm of supporting structure.
The insulators provide necessary insulation between line conductors and supports.
Types of Insulating material
1.Porcelian 2.Glass
Types of insulators-
1. Pin type
2. Shackle type
3. String or Suspension type
4. Strain or tension type

12. ISOLATOR
Isolator" is one, which can break and make an electric circuit in no load condition.
These are normally used in various circuits for the purposes of Isolation

13. CIRCUIT BREAKER
A circuit breaker is also used for circuit switching under normal conditions.
High-voltage AC circuit breakers are routinely available with ratings up to 765,000 volts.
Apart from breaking and making contacts, a C.B. should be capable of doing.
 Continuously carry the maximum current at point of installation.
Make and break the circuit under abnormal and normal condition.
Close or open the faulty section only where fault exists.

14. AIR BLAST CIRCUIT BREAKER
The principle of arc interruption in air blast circuit breakers is to direct a blast of air, at high pressure and velocity,

15. CURRENT TRANSFORMER
It can be used to supply information for measuring power flows
Current transformers are also used for street lighting circuits.

16. POTENTIAL TRANSFORMER
A potential transformer (PT) is used to transform the high voltage of a power line to a lower value,
The voltage transformers are classified as under:
•Capacitive voltage transformer or capacitive type
•Electromagnetic type

17. CONTROL ROOM
Control panel contain meters, control switches and recorders located in the control building
These are used to control the substation equipment to send power from one circuit to another or to open or to shut down circuits when needed.

18. CAPACITOR BANK
The capacitor bank provides reactive power at grid substation.
Benefits of using the capacitor bank
1 .Increased voltage level at the load
2. Reduced system losses

19. QUERY ?

20. THANKS TO LISTION ME:-