Short Circuit Fault Current

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Ukuthenga ngaphakathi nohlelo

Mayelana nalolu hlelo lokusebenza

Uhlelo lokusebenza lweselula lwe-Short Circuit Analytic lwenza izibalo zamanje zephutha lesifunda esifushane kusistimu yamandla erediyali yezigaba ezintathu osebenza nayo. Uhlelo lokusebenza lucabangela wonke amapharamitha kagesi abalulekile wesistimu yokusabalalisa amandla okuhlanganisa ukuphakelwa kwamandla, izintambo, ama-transformer, amajeneretha namamotho.

Umthombo ungasethwa njenge-transformer supply noma ibha yebhasi enezinga elicacisiwe lesifunda esifushane. Uma kusetshenziswa umthombo we-transformer, ileveli yesifunda esifushane ohlangothini oluyinhloko ingasethwa ku-infinity ngokusetha inkambu yedatha ingenalutho.

Engeza izingxenye ngayinye ukuze wakhe umdwebo womugqa owodwa. Izingxenye zingaba izintambo, ama-transformer, imithwalo ye-ligting, izinto zikagesi, izinjini kanye namajeneretha. Ngemva kokuba ingxenye isingeziwe, idatha yayo ingahlelwa ngokuthepha ingxenye uma ikhonjiswa esikrinini.

Thepha inkinobho ethi 'Sebenzisa Ukuhlaziya' ukuze ubale amanani amanje esekethe emfushane yesigaba nesigaba nesigaba kanye nephutha lesilinganiso se-X/R kubha yebhasi ngayinye.

Ulwazi olwengeziwe mayelana neselula ye-SCA V1.0 kanye nendlela ebanzi yokuhlaziya isifunda esifushane

Izibalo zamanje zamaphutha esekethe elifushane lokukhomba-kuya-iphuzu zenziwa kusetshenziswa umthetho we-Ohm namanani wokumelana nemishini. Ukunquma iphutha lamanje ezindaweni ezihlukahlukene ngaphakathi kwesistimu yamandla, izici zesistimu ezifana nenani lesekethe elifushane elitholakalayo ekungeneni kwesevisi, i-voltage kalayini, isilinganiso se-transformer KVA kanye ne-impedance yamaphesenti, izici zomqhubi ziyasetshenziswa.

Izibalo ziba nzima kakhulu lapho amanani okumelana ethathelwa indawo amanani e-impedance. Isibonelo, isilinganiso se-transformer sokusabela kokumelana (X/R) sisetshenziswa kanye ne-impedance yamaphesenti e-transformer ukuze kunqunywe amanani we-X kanye no-R kuzisekelo zeyunithi ngayinye. Ngokufanayo, i-impedance yama-conductor ngaphakathi kwesistimu kagesi nayo ihlukaniswe izingxenye ze-X kanye ne-R ze-impedance.

Inani eliphakeme lephutha le-asymmetric liphinde linqunywe isilinganiso se-X/R. Ingqikithi yamanje ye-asymmetric isilinganiso sesamba sengxenye ye-DC kanye nengxenye yokulinganisa. Ingxenye ye-asymmetrical ibola ngokuhamba kwesikhathi futhi izobangela umjikelezo wokuqala wephutha lamanje ukuthi ube mkhulu ngobukhulu kunephutha lesimo esizinzile. Futhi, ukubola kwengxenye ye-DC kuncike esilinganisweni se-X/R somjikelezo phakathi komthombo nephutha.

Ukwazi isilinganiso sephutha se-X/R kubalulekile lapho ukhetha okokusebenza kagesi nokuvikela. Isibonelo, zonke izisetshenziswa zokuvikela ezine-voltage ephansi zihlolwa ngezilinganiso ezinqunywe kusengaphambili ze-X/R. Uma isilinganiso esibaliwe se-X/R kunoma iyiphi indawo kusistimu yokusabalalisa kagesi sidlula isilinganiso esihloliwe se-X/R sedivayisi yokuvikela esebenza ngokweqile, elinye igiya elinesilinganiso esanele se-X/R kufanele licatshangelwe noma isilinganiso esisebenzayo sedivayisi kufanele sehliswe.

Izici Namakhono:

1. Bala izigaba ezi-3, isigaba-kuya-isigaba samasekhethi amafushane ebhasini ngalinye ngaphakathi kwesistimu yakho yokusabalalisa amandla
2. Nquma inani eliphezulu elitholakalayo lamanje lesekethe emfishane, inani eliphezulu lamanje lesekethe emfushane ephezulu ekhuphukayo kanye nobuncane obutholakalayo besekethe emfishane enikelwe umthombo owodwa kuphela. Kokubili i-short circuit current (ASCC) etholakalayo kanye nengxenye ye-ASCC ngamavelu wamanje wedivayisi yokuvikela kuyadingeka ukuze kuhlaziywe ubungozi be-arc flash kusetshenziswa izindlela ze-NFPA 70E kanye ne-IEEE 1584.
3. Bala iminikelo evela kumajeneretha namamotho
4. Engeza izintambo zegeji yezintambo zaseNyakatho Melika kanye nezintambo zamazwe ngamazwe
5. Yenza ukuhlaziya okubanzi kwesekethe emfishane ngokucabangela zombili izingxenye ezisebenzayo nezisebenzayo ze-impedance yemishini
6. Thola iphutha lesilinganiso se-X/R ebhasini ngalinye
7. Londoloza, qamba kabusha, phinda imidwebo yomugqa owodwa kanye nedatha yemishini
8. Thekelisa, ngenisa imidwebo yomugqa owodwa nayo yonke idatha yemishini ukuze wabelane ngayo kalula
9. Thumela imiphumela yokubala futhi uthwebule imidwebo yomugqa owodwa nge-imeyili

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