Sebopeho sa seteishene se ka etsoa ho sebelisoa konkreite kapa tšepe, ka litlhophiso tse kang liforeimi tsa portal le meaho e nang le sebopeho sa π. Khetho e boetse e itšetlehile ka hore na thepa e hlophisitsoe ka sekhahla se le seng kapa lihlopha tse ngata.

1. Li-transformer

Li-transformer ke lisebelisoa tsa mantlha liteisheneng tse nyane, 'me li ka aroloa ka li-transformer tse nang le maqhubu a mabeli, li-transformer tse tharo, le li-autotransformers (tse arolelanang moea oa motlakase o phahameng le o tlase, ka pompo e nkuoang ho tsoa maqhubung a phahameng a motlakase ho sebetsa joalo ka matla a tlase. tlhahiso ea matla). Maemo a motlakase a lekana le palo ea ho thinya ha maqhubu, athe a hona joale a lekana ka tsela e fapaneng.

Li-transformer li ka aroloa ho latela ts'ebetso ea tsona ho li-transformer tse ntseng li tsoela pele (tse sebelisoang ho romela li-substations) le li-transformer tse theoha (tse sebelisoang ho amohela li-substations). Matla a transformer a tlameha ho lumellana le matla a tsamaiso ea matla. Ho boloka maemo a motlakase a amohelehang tlas'a meroalo e fapaneng, li-transformer li ka hloka ho chencha likhokahano tsa lipompo.

Ho ipapisitsoe le mokhoa oa ho chencha pompo, li-transformer li ka aroloa ka li-transformer tse fetolang lipompo le li-transformer tse fetolang pompo. Li-transformer tse fetolang li-tap-load li sebelisoa haholo ho amohela li-substations.

2. Lisebelisoa tsa liletsa

Li-voltage transformer le li-transformer tsa hajoale li sebetsa ka mokhoa o ts'oanang ho li-transformer, li fetola maqhubu a phahameng le maqhubu a maholo ho tloha lisebelisoa le libese ho ea ho li-voltage tse tlase le maemo a hajoale a loketseng lisebelisoa tsa ho lekanya, ts'ireletso ea relay le lisebelisoa tsa taolo. Tlas'a maemo a ts'ebetso a lekantsoeng, motlakase oa bobeli oa motlakase oa motlakase ke 100V, ha motlakase oa bobeli oa motlakase oa hona joale ke 5A kapa 1A. Ke habohlokoa ho qoba ho bula potoloho ea bobeli ea transformer ea hona joale, kaha sena se ka lebisa ho matla a phahameng a behang likotsi ho lisebelisoa le basebetsi.

3. Ho Fetola Thepa

Sena se kenyelletsa li-circuit breaker, li-isolators, li-switch switch, le li-fuse tse nang le matla a phahameng, tse sebelisetsoang ho bula le ho koala li-circuits. Li-circuit breaker li sebelisetsoa ho hokahanya le ho khaola li-circuits nakong ea ts'ebetso e tloaelehileng 'me ka bo eona li arola lisebelisoa le mela e nang le phoso tlas'a taolo ea lisebelisoa tsa ts'ireletso ea relay. Chaena, li-air circuit breaker le sulfur hexafluoride (SF6) circuit breaker li atisa ho sebelisoa liteishene tse behiloeng ka holimo ho 220kV.

Mosebetsi o ka sehloohong oa li-isolator (li-switches tsa thipa) ke ho arola motlakase nakong ea lisebelisoa kapa tlhokomelo ea mohala ho netefatsa polokeho. Ha li khone ho sitisa mojaro kapa maqhubu a phoso 'me li lokela ho sebelisoa hammoho le li-circuit breakers. Nakong ea ho khaoha ha motlakase, mochine oa potoloho o lokela ho buloa ka pel'a motho ea ikemetseng, 'me nakong ea tsosoloso ea matla, sekhetho se lokela ho koaloa pele ho potoloho ea potoloho. Ts'ebetso e fosahetseng e ka baka tšenyo ea lisebelisoa le kotsi ea motho.

Li-switches tsa mojaro li ka sitisa maqhubu a mojaro nakong ea ts'ebetso e tloaelehileng empa ha li na bokhoni ba ho sitisa maqhubu a phoso. Hangata li sebelisoa hammoho le li-fuse tse nang le matla a phahameng a motlakase bakeng sa li-transformer kapa lithapo tse tsoang ho 10kV ho ea holimo tse sa sebetseng khafetsa.

Ho fokotsa maoto a liteishene, SF6-insulated switchgear (GIS) e sebelisoa haholo. Theknoloji ena e kopanya li-circuits, li-isolators, li-busbar, li-switches tsa fatše, li-transformer tsa lisebelisoa, le li-cable terminations hore e be setsi se kopanetsoeng, se tiisitsoeng se tletseng khase ea SF6 e le setsi sa tšireletso. GIS e fana ka melemo e joalo ka sebopeho se kopaneng, boima bo bobebe, ho itšireletsa maemong a tikoloho, nako e telele ea tlhokomelo, le kotsi e fokotsehileng ea ho tsukutloa ha motlakase le tšitiso ea lerata. E kentsoe tšebetsong litsing tse nyane tse fihlang ho 765kV. Leha ho le joalo, e batla e theko e boima 'me e hloka litekanyetso tse phahameng tsa tlhahiso le tlhokomelo.

4. Lisebelisoa tsa Tšireletso ea Lehalima

Liteishene li boetse li na le lisebelisoa tsa ts'ireletso ea lehalima, haholo-holo lithupa tsa lehalima le li-surge arresters. Melamu ea lehalima e thibela lehalima le tobileng ka ho lebisa matla a lehalima fatše. Ha lehalima le otla litseleng tse haufi, le ka etsa hore ho be le motlakase o mongata ka har'a seteishene. Ho feta moo, ts'ebetso ea li-circuit breaker le eona e ka baka overvoltage. Li-Surge arresters li theohela fatše ka tsela e iketsang ha overvoltage e feta moeli o itseng, kahoo e sireletsa lisebelisoa. Kamora ho tsoa, ​​​​ba tima arc kapele ho netefatsa ts'ebetso e tloaelehileng ea sistimi, joalo ka li-zinc oxide surge arresters.