220 kV GSS Mansarovar Jaipur (RVPNL) Training PPT by Subhash Mahla (S.M.5486956), s.m.5486956@gmail.com

1. Baldev Ram Mirdha Institute of Technology , Jaipur
SUMMER PRACTICAL REPORT
AT
220 KV GRID SUB-STATION
(MANSAROVAR JAIPUR)
SESSION 2017-18
Presented By :-
Subahsh Mahla
14EBMEE045
Submitted To :-
Mr. Rajneesh Suhalka
HOD of Electrical Department

2. CONTENTS
Introduction
Substation
Incoming Feeders
Outgoing Feeders
Bus bar
Isolators
Insulators
Circuit breakers
Power transformer
Control transformer
Lightning Arresters
Relay
Battery Room

3. Electrical power is generated, transmitted in the form of
alternating current. The electric power produced at the power
station is delivered to the consumers through a large network of
transmission and distribution.
 In India Electrical power is Generated at a voltage of 11kv
to 33kv , which is taken stepped up to the transmission level in
the range of 66kv to 400kv member of transmission and
switching have to be created these are known as ”Substation”.
A Substation is a part of an electrical generation transmission
and distribution.
INTRODUCTION

4. SUBSTATION
Main tasks of sub-station
Protection of transmission system.
Controlling the exchange of energy.
Voltage control.
Fault analysis.
Reliable supply.

5. INCOMING FEEDERS
220kV:-
 HEERAPURA
 SANGANER
 DURGAPURA (FUTURE)

6. OUTGOING FEEDERS
132KV
CHAMBAL
SMS STADIUM
SANGANER I & II
JMRC I & II
33KV
NIRMAN NAGAR I &II
BISALPUR PUMP HOUSE I &II
KAVERI PATH
TRIVENI
ADINATH
KIRAN PATH

7. BUS BARS
An electrical conductor
that makes a common
connection between several
circuits.
Single Bus Bar scheme.
Single main transfer
scheme.
Double main bus bar
scheme.

8. Insulators
It provides insulation between line
conductor and support and thus
prevent any leakage current from
conductor to earth.
 PURPOSE
• Support
• Break the current
 TYPE OF INSULATOR
1. Pin insulator
2. Suspension insulator
3. Strain insulator

9. ISOLATORS
Isolator is a mechanical
switch which isolates a
part of circuit from system
as when required.
1)Double Break Isolator
2)Single Break Isolator
3)Pantograph type Isolator

10. CIRCUIT BREAKER
 THE MAIN FUNCTION OF
CIRCUIT BREAKER
1.it carries current continuously
without heating.
2. Opens or close the circuit
when required.
3. It protects the circuit incase
of any fault.

11. TYPES OF CIRCUIT BREAKER
Oil Circuit Breaker
Vacuum Circuit Breaker
Air Circuit Breaker
SF6 Circuit Breaker

12. DIFFERENCE BETWEEN ISOLATOR AND CIRCUIT
BREAKER
• Isolator is an off-load device while circuit breaker is an
on-load device.
• Isolator is a switch operated manually , which separate the
circuit from power main and discharges the trapped
charges in the circuit.
• Circuit breakers operate automatically ,triggered by
electromechanical mechanism inside and are a safe feature
for abnormal loads and voltages in the circuit.

13. POWER TRANSFORMER
 Transformers are used to
voltage control at constant
frequency.
 MAIN PARTS OF
TRANSFORMER
CAPACITY
PROTECTION

14. TYPES OF POWER TRANSFORMERS
• Step up transformer and step down transformer.
• Three phase transformer & single phase transformer.
• Electric power transformer, Distribution transformer
& instrument transformer.
• Two winding transformer & auto transformer.
• Outdoor transformer & indoor transformer.

15. CT & PT
CT
Stepping down current
for measurement
PT
Stepping down voltage
for purpose of
protection

16. CONTROL ROOM

17. LIGHTNING ARRESTER
 A device which protect equipment from over voltage
in the basic of that which they are designed.

18. Relays
A relay is automatic device which senses an abnormal condition
of electric circuit and closes its contacts.
FUNCTION OF RELAY
• Relays are switches that opens and close circuits
electromechanically and electronically. Relays are control one
circuit by opening and closing contacts in another circuit.

19. Differential Relay
Overcurrent Relay
Distance Relay
Auxiliary Relay
TYPES OF RELAY

20. BATTERY ROOM
A battery room is a room
in a facility used to house
batteries for backup or
uninterruptible power
system.