132/33KV SUBSTATION RAJA KA TALAB VARANASI

SUBMITED BY- -JAGDEESH KUMAR MAURYA

1342220904E.E. 4th YEAR

BANSAL INSTITUTE OF ENGINEERING & TECHNOLOGY

LUCKNOWSUBMITED TO -

Mr. B.R. SINGHHOD OF E.E

132KV INCOMING

132KV INCOMING MANDUADIH, GAJOKHAR & AUARI

132KV INCOMING

132KV INCOMING MANDUADHI

LIGHTNING ARRESTORSLIGHTNING 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 earth.

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.

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 .

Vacuum CIRCUIT BREAKERS (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 as faulty condition.

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

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

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

TRANSFER BUS

TRANSFER BUS

It is used in ACSR conductor. It is transfer bus through supply in different -2 transformer

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.

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

LINE ISOLATORS

LINE ISOLATORS

Line isolator is line side isolator

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.

post INSULATOR

LIGHTNING ARRESTORS

132/33 ADITYA TRANSFORMER

HV SIDE

63MVA 132/33 STAR-STAR T/F

CONSERVATOR TANK

BUCHHOLZ’S RELAY

SILICA GEL

132/33 ADITYA TRANSFORMER

COOLING FINSTAP CHANGER SWITCH

NUTRAL TERMINEL

Transformer is a heart of substations. These are used to reduce the voltages at appropriate levels. It is step down transformer.

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

33KV BUS WITH PARALLEL OPErATION IN 40MVA & 63MVA

33KV PIN INSULATOR

PARALLEL OPerATION

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.

33KV OUTGOING VACUUM CB

33 KV OUTGOING

33kv 7 outgoing ROHANIA , ADALPURA , LOHTA, SEWAPURI, JAMUA ,

THATRA and JAKHANI.

10MVA 33/11 TRANSFORMERS

33/11 TRANSFORMERS

33/11 STEP DOWN TRANSFORMER .

wall

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 capacitor bank.