summer internship of 2 months.

1. SUMMER PRACTICAL TRAINING REPORT
AT
400 KV GRID SUB-STATION
(HEERAPURA.JAIPUR)
SUBMITTED TO:- SUBMITTED BY:-
DEPARTMENT OF SURESH KUMAR CHOUDHARY
ELECTRICAL ENGINEERING 2012UEE1549
MNIT,JAIPUR BATCH E-4

2. 400 KV GRID SUB-STATION
SESSION-2015

3. Introduction of venue
ESTABLISHED
 On 19 july 2000 by govt. Of
raj.
CAPACITY
 250MVA
STAFF

4. Introduction
Electric power is generated, transmitted and distributed in the
form of Ac. The electric power produced at the power station is
delivered to the consumers through a large network of
transmission and distribution.
So…..
What is a electric sub-station ?

5. Substation
Main tasks of sub-stations
 Protection of transmission system.
 Controlling the Exchange of Energy.
 Voltage Control
 Fault analysis
 Reliable supply

6. ABSTRACT
 400kV INCOMING FEEDERS
 BASSI-I
 BASSI-II
 MERTA
 HINDOUN
 220kV OUTGOING FEEDERS
 SANGANER
 SEZ
 PHULERA
 KTPS

7. contents
Bus bars
Isolators
Insulators
Circuit breakers
Power transformers
Control room
Potential and current transformers
Relays
Lightening arresters
Battery room

8. 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

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. Insulators
It provide insulation between line
conductors and supports and
thus prevent any leakage current
from conductor to earth.
PURPOSE
• SUPPORT
• BREAK THE CURRENT
MATERIAL
TYPE OF INSULATOR
1. Pin Insulator
2. Suspension Insulator
3. Strain Insulator

11. 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 in case
of any fault.

12. Types of circuit breakers
Vacuum
circuit
breaker
SF6 circuit
breaker
Air circuit
breaker
Oil circuit
breaker

13. What is the 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 the
power main and discharges the trapped charges in the circuit.
 Circuit breakers operate automatically, triggered by electromechanical
mechanism inside and are a safety feature for abnormal loads and
voltages in the circuit.

14. Power transformers
● TRANSFORMERS ARE USED
TO VOLTAGE CONTROL AT
CONSTANT FREQUENCY.
 MAIN PARTS OF
TRANSFORMER
 CAPACITY
 PROTECTION

15. Types of power transformers
 Step Up Transformer & 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

16. C. T. & P.T.
 CT
oSTEPING DOWN
CURRENT FOR
MEASURMENT
 PT
oSTEPING DOWN
VOLTAGE FOR
PURPOSE OF
PROTECTION

17. Control room

18. LIGHTNING ARRESTER
●A DEVICE WHICH
PROTECTS
EQUIPMENT FROM
OVER VOLTAGE IN
THE BASIS OF THAT
WHICH THEY ARE
DESIGNED

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

21. Battery Room
A battery room is
a room in a
facility used to
house batteries
for backup or
uninterruptible
power systems

22. CONCLUSION
During these eight weeks of work there I developed
my team work, analytical thinking and various
important information about electric power system.
The main objective of this whole training program is
to provide an opportunity to identify, observe and
practice how engineering is applicable in the real
industry.

23. THANK YOU

24. ANY QUERIES