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RAJASTHAN TECHNICAL UNIVERCITY ,KOTA

220KV GRID SUB STATION ,DHOLPUR

SINE INTERNATIONAL INSTITUE OF

TECHNOLOGY,

  JAIPUR

SUBMITTED

TO

MISS.VICKY JAIN

  LECTURER

SUBMITTED BY 

AKASH BHAGEL

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Contents

●General discussion on sub-stations..

●Components used.

●Insulator 

●Circuit Breakers

●PLCC

●Bus Bars and Schemes.

●Transformer & components.●Improements.

●Conclusion.

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General Discussion

Deinition!" ! sub station is a subsidiar"station of

an electricit" #eneration$ transmission &distribution s"stem %here arious operations like

step up $ step do%n etc..

T#$es!" a Transmission Sub-Station.

b 'istribution Sub-Station.

%ain Issue!" The main issue for a po%er

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Co&$onents Use'

●Circuit Breakers.

●Isolators.

●Instrument

Transformers.

●Li#htenin# !rrestors.

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●Circuit (rea)er  )-

 !utomatic s%itchin# durin# normal or abnormal

conditions.

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CIRCUIT (REAKER

●%ini&u& oil Circuit

(rea)er 

●Air (last Circuit (rea)er 

●S*+ Circuit (rea)er ●Vacuu& Circuit (rea)er 

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o-er Line Carrier

Co&&unication

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(us (ars . Sc/e&es

●Sin#le Bus Bar Scheme.

●'ouble Bus Bar Scheme.

●*ain & Transfer Bus Bar Scheme.

●+thers like *ain$ resere and transfer bus

scheme$

Isolator and a half scheme etc.. !re also

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Transor&er . It0s

Co&$onents

●Conserator Tank.

●Breather.

●Bukholes ,ela".

●Sur#e ,ela".●Tap Chan#er.

●,adiator.

T#$es!"●+!

●+!

●+!

●/ater cooled.

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I&$ro1e&ents .

Su22estions3

●Improed man po%er.

●Computeri0ation.

●Lack of fire fi#htin# e1uipments.

●Timel" maintenance of e1uipments and

instruments.

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Conclusion3

'esi#n of sub station inoles a number of

comple2ities and detailed en#ineerin#. !

 3udicious approach in tacklin# ariousproblems is re1uired on the part of desi#n

en#ineers as %ell as the suppliers of arious

e1uipments so as to achiee trouble freeoperation of po%er s"stem.

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EARTHING●Neutral Eart/in2

●Electric Eart/in2

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4UER

 Y

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