220KV GIS

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  • 8/16/2019 220KV GIS SYSTEM.ppt

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    PRESENTATION

    220kV GIS for Electrical Authorizatio

    n

    ON

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    PURPOSE OF 220 kV SWITCHYARD

    Before Pla! Cr"!"#al"!$ % 

     For &ra'"( Co))"**"o"( +o'er *,++l$ fro) !-e (r"&

     A* a S!ar! .,+ Po'er  S,++l$

     To *,++l$ #o))o *!a!"o loa&

    Af!er Pla! /e#o)e* O+era!"oal %

     To ea#,a!e Po'er fro) !-e *!a!"o !o !-e

    (r"&  A* a Re*ere Po'er *,++l$ of !-e Pla!

     To *,++l$ #o))o *!a!"o loa&

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    CONVENTIONAL SWITCHYARD

    All !-e #,rre!1#arr$"( +ar!* are o+e !o a"r

    D,e !o +ro+er!"e* of a"r !-e #leara#e

    re3,"re& /e!'ee l"e +ar!* "* )ore4 *o *+a#ere3,"re)e! "* )ore

    Lo' ""!"al #o*!

    5a"!ea#e a& e6!e*"o /e#o)e* &"ff"#,l! or re3,"re* o,!a(e of a&7a#e! /a$*

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    GAS INSULATED SWITCHGEAR

    • H"(- ol!a(e #,rre! #arr$"( +ar!* are '"!-" a )e!al e#lo*,re

    • T-e *+a#e /e!'ee !-e #o&,#!or a&

    e#lo*,re "* f"lle& '"!- SF8 (a* ,&er )o&era!e +re**,re

    • SF8 (a* a#!* a* a "*,la!"( a& #,rre!

    "!err,+!"( )e&",)

    • T-e GIS a**e)/l$ "* &""&e& "!o *e+ara!e

    #o)+ar!)e!* '-"#- "* f"lle& '"!- SF8 (a*

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    PROPERTIES OF SF8 GAS

    Chemical properties: Ver$ *!a/le (a*

    O&o,rle**4 #olo,rle** 4 o!o6"# a&

    o"fla))a/le  If fla*-oer% De#o)+o*"!"o of !-e )ole#,le

    a! 900 :C   – Very toxic decomposition product

     

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    Electrical properties  D"ele#!r"# *!re(!-% 29 !")e* )ore !-a

    a"r  

     –Good dielectric quality T")e #o*!a!% ;00 !")e* )ore !-a a"r 

     –Quick return to the dielectric strength 

    Ele#!roe(a!"e (a*% Grea! aff""!$ for free ele#!ro*

     –Very good ability to extinguish an arc by absorbing electrons emitted during breaking.

    PROPERTIES OF SF8 GAS

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    ADVANTAGE OF GIS

    • I&eall$ *,"!e& for #oa*!al *"!e* -a"( *al"e a!)o*+-ere

    • Pro!e#!"o fro) &,*!$ e"ro)e!al #o&"!"o*• Re*"*!a#e !o 'or*! +oll,!"o • H"(- rel"a/"l"!$ < aa"la/"l"!$

    • =,"#k *"!e a**e)/l$ *"#e )o*! of !-e GIS e3,"+)e! are )o&,lar &e*"( 

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    • Safe I*!alla!"o a* all *'"!#-"( #o)+oe!* are e#lo*e& '"!-" !-e e#lo*,re* 

    • GIS I*!alla!"o* ee& ol$ ;>;0!-  of !-e *+a#e

    re3,"re& for #oe!"oal "*!alla!"o* • Lo' )a"!ea#e '-e #o)+are& '"!- a"r

    "*,la!e& *'"!#-$ar& *"#e )o*! of !-e +ar!* are

    e#lo*e&

    ADVANTAGE OF GIS

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    DISADVANTAGE OF GIS

    • H"(- ""!"al #o*! '-"#- "* aro,& 200? a++ro6 of a"r "*,la!e& *'"!#-$ar&4 '-"#-

    a(a" "* off*e! " !-e lo(er r, '"!- lo'er o,!a(e* a& &o'!")e

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    GIS IN KKNPP

     I&oor GIS S'"!#-$ar& for /o!- @00 < 220

    kV

    Oe < Half Breaker S#-e)e for @00 kV  T'o 5a" B,* S#-e)e for 220 kV

     Se+ara!e S'"!#-$ar& Co!rol Roo) 1 SYCR

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    SWITCHYARD LOCATION

    • @00KV GIS "* lo#a!e& " UAB /,"l&"( • 220KV GIS "* lo#a!e& " UAD /,"l&"( • S'"!#-$ar& #o!rol roo) "* lo#a!e& " UAC

    /,"l&"( • @00>220KV "!er#oe#!"( a,!o !ra*for)er*

    a& *'"!#-$ar& #o!rol roo) are lo#a!e& /e!'ee 220KV a& @00KV GIS /,"l&"(*

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    LOCATION OF UAC AND UAD

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    220 kV SWITCHYARDCSAT TRANSFOR5ERS 

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    220 kV GIS

    • T$+e of S'"!#-$ar& %GIS4 I&oor  • No of Ba$* %  /a$* • T$+e of &"ele#!r"# )e&",)%SF8 Ga*

    • T$+e of *#-e)e %T'o 5a" B,* Ra!e& Vol!a(e %220 kV

    • C,rre! Ra!"( %2000 A

    • S-or! C"r#,"! Ra!"( %@0 kA

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    SWITCHING SCHE5E IN 220 kV GIS

     TWO 5AIN BUS SCHE5E  proides maintenance o! bus bars and other

    equipment connected to it "ith due outage.

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    #"o main bus scheme

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    ADVANTAGES OF TWO 5AIN BUS

    SCHE5E

    • Le** o of Breaker* < I*ola!or* #o)+are& !o Oe < Half CB S#-e)e

    • Le**er o of S'"!#-"( O+era!"o* &,e !o le** CB*>I*ola!or*

    • Le** 5a"!ea#e " "e' of le**er o

    of E3+!>S'"!#-"( o+era!"o* • Le** Co*!l"er !-a Oe < Half CB

    S#-e)e

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    DISADVANTAGES OF TWO 5AIN

    BUS SCHE5E

    • All !-e C"r#,"!* #oe#!e& !o !-e +ar!"#,lar /,* -ae !o /e !r"++e& "

    #a*e of B,* fa,l!4 '-"#- re*,l!* "

    !e)+orar$ o,!a(e !"ll !-e l"e* are !ra*ferre& !o !-e -eal!-$ /,*

    • Ho'eer4 B,* Fa,l! "* #o*"&ere& !o /e

    rare < !-erefore "! "* a&o+!e& for 220 kV S'"!#-$ar&

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    220kV GIS BAYS

    ;0AD=0 1UNIT; RAT BAY

    ADL; 1TUTICORIN LINE BAY

    00 AD=0; 1 CSAT BAY

    ADL;9 1 SRPUDUR LINE BAY AD=0 1 BUS COUPLER BAY

    20AD=0 1 UNIT2 RAT BAY

     ADL;@ 1 SPARE LINE BAY

    AD=;0 1 ICT; BAY

    AD=20 1 ICT2 BAY

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    220KV GIS CO5PONENTS 

     220KV C"r#,"! Breaker    220KV D"*#oe#!or*  220KV C,rre! !ra*for)er*  220KV Vol!a(e Tra*for)er*

     220KV S,r(e Arre*!er*  220KV Ear!-"( S'"!#- H"(- *+ee& for l"e*  220KV SF8 a"r B,*-"( For l"e* ol$

     220kV SF8 O"l B,*-"( For !ra*for)er* ol$

     Al,)"",) E#lo*,re  B,* Bar   Har&'are #a/"e!* I*"&e 0 UAD  Pro!e#!"o a& "!er+o*"( +ael* 0 UAC  Co!rol Pael*

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    $utdoor equipments

    %ightning arrestor  Capacitor oltage trans!ormer  

    &ae trap 'ost insulator 

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    CIRCUIT BREAKER 

    • CB -a* !-ree *e+ara!e +ole* ea#- -a"( a *e+ara!e "!err,+!"( ,"!

    • I!err,+!er ,*e !-e P,ffer /reak"( !e#-"3,e " '-"#- !-e o+era!"o of CB +re**,r"e* !-e SF8 (a*

    • CB o+era!"o !-ro,(- H$&ra,l"# o+era!"( )e#-a"*) '-"#- &r"e* !-e )o"( +ar! of CB " e"!-er &"re#!"o

    ( i!i ti ! i it

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    (peci!ications o! circuit breaker 

    • )ated normal current: *+++, • )ated short time-s/ "ithstand current : 0+1, • (23 pressure -kg!4cm*/ -at *+ 5C/:

    6 7aximum: 8.9 6  )ated 'ressure: 8.8 6  ,larm 'ressure: 8.0 6 %ock out 'ressure: 8.+ 

    • (23 leakage per year not more than: ;< o! mass • 7ake time not more than: ;++ m sec

    • =reak time not more than: 8 m sec • #otal break time not more than: 88m sec • Cycle: $>+.s>C$>;9+s>C$

    Ci it b k ith

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    Circuit breaker "ith dismantling unit

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    5OVING ARCING CONTACT

    5OVING 5AIN CONTACT

    STATIONARY ARCING

    CONTACT

    STATIONARY 5AIN CONTACT

    ?@#E))A'#E) A@?#

    OPEN POSITION CLOSED POSITION

    ' !!i !! t

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    'u!!ing e!!ect

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    Circuit breaker 

    C?)CA?# =)E,1E)

    BD),A%?C D)?VE

    C.#

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    Bydraulic drie

    • Bydraulic drie is used to actuate the circuit breaker.

    • $il is used in hydraulic drie • (prin