PT le CT ho Transformers: The Unsung Heroes of Voltage le Current

PT le CT ho Transformers: The Unsung Heroes of Voltage le Current

Ha ho tluoa tabeng ea li-transformer,PT(Potential Transformer) leCT(Current Transformer) li tšoana le duo e matla ea lefats'e la motlakase-Batman le Robin. Ba kanna ba se ts'oarelle sebaka sa marang-rang joalo ka transformer ka boeona, empa tsena tse peli li sebetsa ka morao ho sebatli ho netefatsa hore tsohle li tsamaea ka polokeho le ka nepo. Ha re hlahlobeng hore na ba sebelisa boselamose ba bona joang ho li-setups tse fapaneng tsa li-transformer.

PT: The Voltage Whisperer

ThePotential Transformer (PT)ke motho eo u ka eang ho eena bakeng sa ho theola motlakase o phahameng ho ea boemong bo laolehang. Ak'u nahane u sebetsana le 33 kV e nyarosang (kapa ho feta) tsamaisong ea hau ea matla - e kotsi ebile ha se ntho eo u ka batlang ho e lekanya ka kotloloho. Ke moo PT e kenang teng. E fetola li-voltage tseo tse phahamisang moriri hore e be ntho eo limithara tsa hau le li-relay li ka sebetsanang le tsona ntle le ho fufuleloa, hangata e theolela ho ntho e kang 110 V kapa 120 V.

Joale, u fumana li-PT li sebetsa hokae?

• Li-transformer tse nang le matla a phahameng a matla: Tsena ke lithunya tse kholo tsa marang-rang a matla, tse sebetsanang le li-voltage kae kapa kae ho tloha ho 110 kV ho isa ho 765 kV. PTs mona etsa bonnete ba hore o khona ho beha leihlo le ho metha voltage ka mokhoa o sireletsehileng u le hole.
• Li-transformer tsa motlakase: PTs e sebetsa litsing tse nyane ho beha leihlo le ho laola maemo a motlakase pele a ka abeloa ho bareki ba indasteri kapa ba bolulo.
• Tšireletso le metering transformer: Lits'ebetsong moo ho lekoa ha motlakase ho leng bohlokoa bakeng sa polokeho le tefiso, PTs e kenella ho fana ka lipalo tse nepahetseng tsa motlakase bakeng sa likamore tsa taolo, li-relay le lisebelisoa tsa ts'ireletso.

PT e tšoana le mofetoleli ea khutsitseng, ea bokelletsoeng konsateng e lerata ea motlakase, ea nkang lintlha tse 110 kV tse arolang litsebe ebe o li fetola molumo o bonolo oo lisebelisoa tsa hau li ka o tšoarang.

CT: Tamer ea Hona Joale

Joale, ha re bue kaTransformer ea Hona joale (CT), mokoetlisi oa tsamaiso ea matla. Ha ea hona joale e qala ho tsitsisa mesifa ea eona ka li-amps tse likete tse phallang ka transformer ea hau, CT e kenella ho e theolela boemong bo sireletsehileng-hangata bo lekaneng ba 5 A kapa 1 A.

U tla fumana li-CT li leketlile ho:

• Li-transformer tsa kabo: Bahlankana bana ba sebeletsa libaka tsa bolulo kapa tsa khoebo, hangata ba matha ka maqhubu a kang 11 kV ho isa ho 33 kV. CTs mona e netefatsa tlhokomelo le ts'ireletso ea hona joale, ho boloka litebello tsa hore na lero le phallang ka mela e kae.
• Li-transformer tsa motlakase li-substations: CTs e beha leihlo boemo ba hona joale ba li-substations tse phahameng moo li-transformer li theolang motlakase ho tloha maemong a phepelo (mohlala, 132 kV kapa ho feta) ho ea maemong a kabo. Li bohlokoa bakeng sa ho bona liphoso le ho kenya lisebelisoa tsa ts'ireletso pele ho phoso.
• Li-transformer tsa indasteri: Liindastering kapa libakeng tse boima tsa indasteri, hangata li-transformer li sebetsana le meroalo e boima, 'me li-CT li teng ho shebella maqhubu a maholohali. Haeba ho na le ho hong ho sa tsamaeeng hantle, CT e fetisetsa tlhahisoleseling ho lits'ebetso tsa ts'ireletso tse koalang lintho pele lisebelisoa li halikisoa.

Ak'u nahane ka CT e le bouncer ea tlelabo - e boloka hona joale e le taolong e le hore e se ke ea imetsa lits'ebetso tsa hau tsa ts'ireletso, 'me haeba lintho li le mpe haholo, CT e etsa bonnete ba hore motho o otla setopong sa tšohanyetso.

Ke Hobane'ng ha PT le CT Li Matter

Hammoho, PT le CT li theha sehlopha sa ho qetela sa metsoalle ea mapolesa bakeng sa lefats'e la li-transformer. Ke lona lebaka leo ka lona li-operators li ka behang leihlo le ho laola ts'ebetso ea li-transformer ka mokhoa o sireletsehileng ntle le ho atamela sebata (nkholoe, ha u batle ho atamela mofuta oo oa motlakase le oa hona joale ntle le ts'ireletso e tebileng). Hore na ke akabo ea transformersebakeng sa heno kapa amotlakase o phahameng oa motlakasematla a ho fepa ho pholletsa le metse eohle, PTs le CTs li lula li le teng, li boloka motlakase le hona joale li le molaong.

'Nete e Thabisang: Ho Beha Leihlo Lipheletsong Ka Bobeli

Na u kile ua ipotsa hore na ke hobane'ng ha bili ea hau ea matla e nepahetse hakaale? U ka leboha CTs le PTs holi-transformer tsa metering. Ba etsa bonnete ba hore k'hamphani le moreki ba tseba hantle hore na motlakase o sebelisoa hakae ka ho theoha ka nepo le ho metha voltage le hona joale. Kahoo, e, PT le CT li boloka lintho li le ntle ebile li le lisekoere lipheletsong tse peli tsa marang-rang a matla.

Qetello

Kahoo, hore na ke sesebelisoa sa phetisetso se phahameng haholo kapa sesebelisoa sa phetisetso se sebetsang ka thata,PT le CTke bahale ba sa buuoeng ba bolokang tsohle li tsamaea hantle. Ba laola matla a phahameng a motlakase le maqhubu a maholohali e le hore ba sebetsang, li-relay le limithara ba khone ho li sebetsana ntle le sutu ea mohale. Nakong e tlang ha u khantša switch ea lebone, hopola - ho na le sehlopha sohle sa bahlokomeli ba motlakase ba etsang bonnete ba hore motlakase le motlakase li sebetsa hantle.

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