PT me CT i roto i ngā Transformers: Ngā Toa Kāore i Waihangatia o te Ngaohiko me te Au

PT me CT i roto i ngā Transformers: Ngā Toa Kāore i Waihangatia o te Ngaohiko me te Au

Ina tae ki ngā taputapu whakawhiti,PT(Pūmanawa Whakawhiti) meCT(Current Transformer) he rite ki te takirua hihiri o te ao hiko—a Batman rāua ko Robin. Ahakoa kāore rāua e pupuri ana i te aro nui pērā i te transformer tonu, ka mahi tahi rāua i muri i ngā whakaaturanga kia pai ai te haere o ngā mea katoa me te haumaru. Kia ruku tātou ki te āhua o tā rāua mahi makutu i roto i ngā whakatakotoranga transformer rerekē.

PT: Te Kaikōrero Ngaohiko

TePūmanawa Whakawhiti (PT)Ko te PT tō tino tangata hei whakamahi māu mō te whakaheke i te ngaohiko teitei ki te taumata e taea te whakahaere. Whakaarohia kei te pāngia koe e te 33 kV nui rawa atu (neke atu rānei) i roto i tō pūnaha hiko—he mea morearea, ā, ehara i te mea e hiahia ana koe ki te ine tika. Koinei te wāhi e uru mai ai te PT. Ka hurihia aua ngaohiko whakamataku ki tētahi mea ka taea e ō mita me ō whakawhiti hiko te whakahaere me te kore e werawera, ko te tikanga ka whakahekehia ki te 110 V, 120 V rānei.

Nā, kei hea e kitea ai ngā PT e mahi ana?

• Ngā whakawhiti hiko teitei-ngaohikoKoinei ngā pū nui o te whatunga hiko, e whakahaere ana i ngā ngaohiko mai i te 110 kV ki te 765 kV. Mā ngā PT i konei ka taea e koe te aroturuki me te ine i te ngaohiko mai i tawhiti me te haumaru.
• Ngā whakawhiti teihana itiKa mahi ngā PT i roto i ngā teihana hiko hei aroturuki me te whakahaere i ngā taumata ngaohiko i mua i te tohatoha ki ngā kaihoko ahumahi, ki ngā kaihoko kāinga rānei.
• Ngā whakawhiti tiaki me te ineI roto i ngā pūnaha he mea nui te aroturuki ngaohiko mō te haumaru me te utu, ka whai wāhi mai ngā PT ki te whakarato i ngā pānui ngaohiko tika mō ngā rūma whakahaere, ngā whakawhiti hiko, me ngā taputapu tiaki.

He rite te PT ki te kaiwhakamāori marino, ngākau mārie i tētahi kōnohete hiko nui, e tango ana i ngā nota 110 kV e hamama ana te taringa, ka huri hei ngunguru mārie ka taea e tō taputapu te whakahaere.

CT: Te Kaiwhakamarie o Nāianei

Nā, me kōrero tātou mō teWhakawhiti Au (CT), te kaiwhakangungu whaiaro o te pūnaha hiko. Ina tīmata te ia ki te piko me ngā mano o ngā amp e rere ana i roto i tō whakawhiti hiko, ka takahi a CT ki te whakaiti i tōna kaha ki te taumata haumaru—i te nuinga o te wā i roto i te awhe 5 A, 1 A rānei.

Ka kitea e koe ngā CT e noho ana i roto i:

• Whakawhiti TohatohangāHe ratonga ēnei tāngata ki ngā wāhi noho, ki ngā wāhi arumoni rānei, ā, ko te nuinga o te wā ka rere i ngā ngaohiko mai i te 11 kV ki te 33 kV. Mā ngā CT i konei ka aroturukihia, ka tiakina hoki te iahiko, ka kitea te nui o te wai e rere ana i roto i ngā raina hiko.
• Ngā Whakawhiti Mana i roto i ngā teihana hikoKa aro turukihia e ngā CT te iahiko i ngā teihana hiko hiko teitei, ka whakahekehia e ngā whakawhiti hiko te iahiko mai i ngā taumata tuku (hei tauira, 132 kV, teitei ake rānei) ki ngā taumata tohatoha. He mea nui ēnei mō te kimi hapa me te whakaoho i ngā taputapu tiaki i mua i te he o tētahi mea.
• Ngā whakawhiti ahumahiI roto i ngā wheketere, i ngā rohe ahumahi taumaha rānei, he maha ngā wā ka taea e ngā whakawhiti hiko te whakahaere i ngā kawenga taumaha, ā, kei reira ngā CT hei aroturuki i ngā iahiko nui. Mēnā ka he tetahi mea, ka tukuna e te CT ngā mōhiohio ki ngā pūnaha tiaki hei whakaweto i ngā mea i mua i te para o ngā taputapu.

Whakaarohia a CT hei kaitiaki parepare i tētahi karapu—ka pupuri i te ia kia kore ai e taupokina ō pūnaha tiaki, ā, ki te tino ngangau te āhua, ka whakarite a CT kia tae atu tētahi ki te aukati ohorere.

He aha te hiranga o te PT me te CT

Mā te mahi tahi, ka hangaia e PT rāua ko CT te takirua pirihimana tino pai mō te ao o ngā taputapu whakawhiti hiko. Ko rāua te take ka taea e ngā kaiwhakahaere te aroturuki me te whakahaere haumaru i te mahi a ngā taputapu whakawhiti hiko me te kore e whakatata atu ki te taniwha (whakapono mai, kāore koe e hiahia ki te whakatata atu ki taua momo ngaohiko me te iahiko me te kore he tiakitanga nui). Ahakoa hewhakawhiti tohatohai tō rohe, i tētahi rāneiwhakawhiti hiko ngaohiko teiteiHei whāngai mana puta noa i ngā tāone katoa, kei reira tonu ngā PT me ngā CT, hei pupuri i te ngaohiko me te iahiko kia rite.

He Kōrero Whakamere: Te Mataara i ngā Pito e Rua

Kua whakaaro koe he aha i tino tika ai tō pire hiko? Ka taea e koe te mihi ki ngā CT me ngā PT i roto ingā whakawhiti ineMā te whakaiti me te ine tika i te ngaohiko me te iahiko ka whakarite kia mōhio te kamupene hiko me te kiritaki ki te nui o te hiko e pau ana. Nō reira, āe, kei te pupuri a PT me CT i ngā mea tika i ngā pito e rua o te whatunga hiko.

Whakamutunga

Nō reira, ahakoa he whakawhiti tuku teitei, he whakawhiti tohatoha pukumahi rānei,PT me CTko rātou ngā toa ngaro e pupuri ana i te rere pai o ngā mea katoa. Ka whakangawari rātou i te ngaohiko teitei me ngā iahiko nui kia taea ai e ngā kaiwhakahaere, ngā whakawhiti hiko, me ngā mita te whakahaere i aua mea me te kore he kākahu toa. A te wā e tahuri ai koe i te pana rama, kia mahara—kei reira tētahi rōpū kaitiaki hiko katoa e whakarite ana kia pai te rere o te iahiko me te ngaohiko.