This document provides information about the 132/33KV substation in Raja Ka Talab, Varanasi. It includes details about the 132KV and 33KV incoming and outgoing lines, transformers, circuit breakers, busbars, potential transformers, capacitor banks, and other equipment in the substation. The substation receives power from three 132KV lines and steps it down through two transformers before distributing it through seven 33KV outgoing feeders and one 33/11KV transformer.

1. 132/33KV SUBSTATION RAJA KA TALAB
VARANASI
SUBMITED BY- -
JAGDEESH KUMAR MAURYA
1342220904
E.E. 4th YEAR
BANSAL INSTITUTE OF ENGINEERING & TECHNOLOGY
LUCKNOW
SUBMITED TO -
Mr. B.R. SINGH
HOD OF E.E

2. 132KV INCOMING
 132KV INCOMING MANDUADIH, GAJOKHAR & AUARI
132KV INCOMING

3. 132KV INCOMING MANDUADHI

4. LIGHTNING ARRESTORS
LIGHTNING ARRESTORS
 It is connected between line and earth so diverts the incoming high
voltage wave to earth.
 When a lightning surge travels along the power line to the arrester, the
current from the surge is diverted through the arrestor in most cases to

5. CURRENT TRANSFORMERS [C.T.]
400/200/100/1A (BHEL)
CURRENT TRANSFORMERS
 A Current transformer (CT) is used for measurement of alternating
currents.
 A Current transformer is 400amp to 1amp step up T/F .
 CT is connected in series with circuit.

6. BUS ISOLATOR
BUS ISOLATOR
 The line through the Bus isolator is distributed in the substation main
bus.
 It is disconnects the circuit from the main power supply.
 Open the isolator on no load .

7. VacuumCIRCUITBREAKERS
(CGL)
CIRCUIT BREAKERS
 Circuit beaker used to protect the equipment by opening the circuit for
over current and over voltage.
 A circuit breaker which can open or close a circuit under normal as well

8. RELAY
 When a short circuit occurs at any point on the transmission line the
current flowing in the increases to the enormous value. This result in a
heavy current flow through the relay coil, causing the to operate by closing
its contacts

9. Main bus-bar
MAIN BUS BAR
 ACSR moose conductor use in main bus bar and consist of a 54 wires in
aluminium and 7wires in steel

10. POTENTIAL
TRANSFORMERS [P.T.]
POTENTIAL TRANSFORMERS
 A Potential transformer is used for measurement of voltage.
 PT is used in power system to step down extra high voltage and
provide a low voltage, for measurement or to operate a protective
relay

11. TRANSFER BUS
TRANSFER BUS
 It is used in ACSR conductor.
 It is transfer bus through supply in different -2 transformer

12. SF6 CIRCUIIT BREAKERS (ABB)
SF6 CIRCUIT BREAKERS
 Sulfur hexafluoride (sf6) gas is used as the arc quenching Medium.
 The sf6 is an electronegative gas and has a strong tendency to absorb
free electrons.
 CB has developed for voltage 115kv to 230kv.

13. Vacuum circuit breaker
VACUUM CB
 Vacuum circuit breakers are circuit breakers which are used to protect
medium and high voltage circuits from dangerous electrical situations

14. LINE
ISOLATORS
LINE ISOLATORS
 Line isolator is line side isolator

15. CURRENT TRANSFORMERS [C.T.]
400/200/100/1a (BHEL)
CURRENT TRANSFORMERS
 A Current transformer (CT) is used for measurement of alternating
currents.
 A Current transformer is 400amp to 1amp step up T/F .
 CT is connected in series with circuit.

16. post
INSULATOR
LIGHTNING ARRESTORS
132/33 ADITYA
TRANSFORMER

17. HV
SIDE
63MVA 132/33 STAR-
STAR T/F
CONSERVATOR TANK
BUCHHOLZ’S
RELAY
SILICA GEL
132/33 ADITYA TRANSFORMER
COOLING FINS
TAP CHANGER SWITCH
NUTRAL TERMINEL
 Transformer is a heart of substations. These are used to reduce the

18. LIGHTNING ARRESTORS
CIRCUIT BREAKERSCURRENT TRANSFORMERS[C.T.]
33kv busbar
33KV BUSBAR
 33kv bus bar in connected in parallel operation in two transformer. one
is 40MVA and 63MVA

19.  33KV BUS WITH PARALLEL OPErATION IN 40MVA &
63MVA
33KV PIN INSULATOR
PARALLEL OPerATION

20. 40 MVA 132/33 TRANSFORMER
LIGHTNING ARRESTORS
C.T.
LIGHTNING ARRESTORS
132/33 ,40MVA TRANSFORMER
COOLING FANS
 132/33, 40MVA, BHARAT BIJALI transformer step down transformer.
 It is connected in parallel operation.
 It is load share in parallel.

21. 33KV OUTGOING VACUUM CB
33 KV OUTGOING
 33kv 7 outgoing ROHANIA , ADALPURA , LOHTA, SEWAPURI, JAMUA ,
THATRA and JAKHANI.

22. 10MVA 33/11 TRANSFORMERS
33/11 TRANSFORMERS
 33/11 STEP DOWN TRANSFORMER .
wall

23. CAPACITOR BANK
CAPACITOR BANK
 The load on the power system is varying being high during morning
and low in evening which increases the load current. This result in the
decreased power factor.
 In order to improve the power factor come device taking leading
power should be connected in parallel with load . One of device can be