1.
220KV GSS , RENWAL , JAIPUR
Presented By:-
ANIL KUMAR KUMAWAT
IV YEAR EE
A PRESENTATION
ON
Session: - 2014-2015
Submitted to:-
Mr. AMIT PANDAY
Mr. GAURAV SRIVASTAVA
Department of Electrical Engineering
Poornima Institute of Engineering & Technology
ISI-2, RIICO Institutional Area, Goner Road, Sitapura, Jaipur-302022

2.
OUTLINE OF PRESENTATION
 GENERAL DISCUSSION ON SUB STATION
 FEEDERS
 Equipments :-
 Lightning arrester (L.A.)
 Capacitive voltage transformer
Wave trap (PLCC)
 Isolator
 Instrument transformers :-C.T. & P.T.
 Circuit breaker :- definition & types
 Bus bar
 Power transformer:-introduction & main parts
 Protective relays :- introduction & Buchhloz relay
 SUMMARY

3.
WHY WE NEED GSS ???
 Improvement of Reliability
 Improvement of economics
 Improvement of efficiency
 Imrovement of power quality
 Improvement of security & safety
 Controller of entire power system

4.
SUBSTATION
Part of Electricity Generation
Transmission of Electricity
Distribution of Electricity
Voltage is Transformed High to Low or vice-versa
using TRANSFORMEr
Ex.-400kV/220kV substation
220kV/132kV substation
132kV/33kV substation
33kV/11kV substation
33kV/.4kV substation

5.
220kV GSS RENWAL
It is devided into two parts:-
A. Panel Section
 Control Panel Section
 Relay and Protection Panel Section
B. Switch Yard
 220kV Section
 132kV section
 33kV section
C. Battery Room (Extra)

6.
A. Panel Section
 It is a room which contains all types of panels.
 It has two sections:-
 Control Panel Section
It contain panels related to controlling of
instruments. E.g.:- feeder panel, X-mer panel, etc.
 Relay And Protection Panel Section
It contains panels related to relay systems and
protection systems. E.g.:- Relay panel, line
protection panel, etc.

7.
B. Switch Yard
It is the field where components used in controlling supply
and measuring supply(incoming and outgoing) are placed.
Some of these components are:-
 C.Bs
 Isolators
 C.Ts
 P.Ts
 L.As
 X-mers, etc.

8.
220 kV Incoming
from HEERAPURA
& REENGAS
LIGHTNING
ARRESTORS
CVT
WAVE TRAP
CT
CIRCUIT
BREAKER
LINE
ISOLATOR BUS
ISOLATOR CT
PT with BUS
ISOLATOR
CB
LA with EARTH
SWITCH
LA
ISOLATOR
CT
132 kV
OUTPUT
ISOLATORS with
EARTH SWITCH
CAPACITOR
BANK
MAIN X-MER
PT with BUS
ISOLATOR
CB
EQUIPMENTS
FLOW

9.
220 kV GSS
RENWAL
HEERAPURA-220 kV
REENGAS-220 kV
FEEDERS
Hingoniya-132 kV
Champapura-132 kV
Khachriyavas-132 kV
Danta-132kV
Dungari-33 kV
Pachkodiya-33 kV
Renwal-33 kV
Minda-33 kV
Badhal-33 kV

10.
EQUIPMENTS – LIGHTENING ARRESTER
 Protect the Insulation & Conductors
of the system from damaging effect of
LIGHTNING

11.
CAPACITIVE VOLTAGE TRANSFORMER
step down extra high voltage signals.
provide a low voltage signal.
for MEASUREMENT of voltage.
to operate a protective relay.

12.
WAVE TRAP (PLCC)
POWER LINE CARRIER COMMUNICATION
exchange of data and transfer of messages between substations.
WAVE TRAP-TRAPPING the unwanted waves.

13.
ISOLATORS
 Used for completety DE-ENERGISED the electrical ckt. for SERVICE or
MAINTENANCE.
 Separate the circuit at NO LOAD CONDITION.

14.
INSTRUMENT TRANSFORMERS
Instrument transformers are used for measurement and protective
applications together with equipments such as meters & relays
Types-
- CURRENT TRANSFORMER
- POTENTIAL TRANSFORMER

15.
CIRCUIT BREAKER
Automatically Operated ELECTRICAL SWITCH.
Designed to protect the ckt. from overload or SHORT
CKT.
Separate Healthy & Faulty Section of ckt.
Operate at ON LOAD Condition.

16.
TYPES OF CIRCUIT BREAKERS
SULPAR HEXAFLUORIDE
CIRCUIT BREAKER (SF6)
Sulpharhexa fluoride (SF6)
gas is used as the arc
quenching medium . The
SF6 is an electronegative
gas and has a strong
tendency to absorb free
electrons. Circuit breakers
have been developed for
voltage 115KV to 230KV ,
power rating10 MVA
VACUUM CIRCUIT BREAKERS
Vacuum circuit breakers are
circuit breakers which are
used to protect medium and
high voltage circuits from
dangerous electrical
situations
OIL CIRCUIT BREAKER
A high-voltage circuit
breaker in which the arc is
drawn in oil to dissipate the
heat and extinguish the arc;
the intense heat of the arc
decomposes the oil .
AIR-BLAST CIRCUIT BREAKER
Fast operations ,suitability for repeated
operation , auto reclosure , unit type multi
break constructions ,simple assembly ,
modest maintenance are some of the
main features of air blast circuit
breakers. A compressors plant necessary
to maintain high air pressure in the air
receiver.

17.
BUS BAR
 A bus bar is a conducting bar that carries heavy currents to
supply several electric circuits.
 Made up of copper rod or thin walled tubes.
TYPES:-
- MAIN BUS BAR.
- AUXILIARY BUS BAR

18.
POWER TRANSFORMER
A Static Device.
Transfer Power from One ckt. to Another ckt.
NO Change in FREQUENCY.
Principle-FARADAY ’s LAW of ELECTROMAGNETIC INDUCTION.
Types- 1. STEP UP X-MER::
O/P Voltage > I/P Voltage.
2. STEP DOWN X-MER ::
O/P Voltage < I/P Voltage.

19.
FIGURE-POWER TRANSFORMER

20.
PARTS OF TRANSFORMER
 core
 Winding(H.V winding, L.V winding, tertiary winding)
 X-MER OILS
 PRESSURE RELIEF VALVE
 BREATHER
 Conservator
 RADIATER
 Tap changer
 Tank

21.
Protective Relay is a sensing device and
is designed to detect operating
conditions on an electric circuit.
It trips the circuit breaker when fault is
detected.
PROTECTIVE RELAYS

22.
BUCHHOLZ RELAY
 A gas actuated relay.
 it is installed in b/w the conservatorand the main tank.
 PRINCIPLE:- Whenever a fault occurs inside the transformers, the oil of the tank gets
overheated and gases are generated.The heat generated by the high local current causes
the transformer oil to decompose and produce gas which can be used to detect the faults.

23.
BATTERY ROOM
 DC battery shell be installed in the power house for
 Protection.
 Emergency power.
 Alarm and indication.

24.
SUMMARY OF EQUIPMENTs
TRANSFORMERS
Also known as the heart
of substations. These are
used to reduce the
voltages at appropriate
levels
CURRENT VOLTAGE
TRANSFORMERS
It is a used in power systems to
step down extra high
voltage signals and provide a low
voltage signal, for measurement
or to operate a protective relay
WAVETRAP
Traps the high frequency
signals
LIGHTINING ARRESTER
Used for protecting the
equipment from surge
voltages
CIRCUIT BREAKER
used to protect the
equipment by opening
the circuit for over
current and over voltages
ISOLATORS
Used for maintenance of
the circuit in no load
condition
RELAY
Used to sense
the faults

25.
QUERIES ???