Ilawulwa ngesigabaamakhoyili okucindezela ama-arc, aziwa nangokuthi “uhlobo lwe-high short-circuit impedance”, ayizingxenye ezibalulekile kumanethiwekhi okusabalalisa amandla.Ukusonga kwayo okuyinhloko kuxhunywe endaweni engathathi hlangothi yenethiwekhi yokusabalalisanjengohlelo lokusebenza.Umgomo wesakhiwo sedivayisi ukufinyeza ama-thyristors amabili axhumeke ngokuhlanekezela, ama-winging esibili asebenza njenge-winging control.Ngokulungisa i-angle conduction ye-thyristor, i-current-circuit current of the second winding ingalawulwa, ngaleyo ndlela ilungise inani lokusabela.
Esinye sezici eziyinhloko zamakhoyili okucindezela i-arc ukulawuleka kwawo.I-engeli conduction ye-thyristor ingahluka ukusuka ku-0° ukuya ku-180°, okubangela ukuthi i-impedance efanayo ihluke ukusuka kokungapheli kuye kuziro.Lokhu kulandelana kuvumela isinxephezelo esiphumayo ukuthi silungiswe ngokuqhubekayo futhi ngaphandle kwesinyathelo phakathi kukaziro kanye nenani elilinganiselwe.
Leli zinga lokulawula libalulekile ekulawuleni amanethiwekhi okusabalalisa njengoba livumela opharetha ukuthi bacule kahle amanani okusabela kuzidingo ezithile.Ngokulungisa i-conduction angle ye-thyristor, ikhoyili yokucindezela i-arc elawulwa yisigaba inganciphisa ngempumelelo umthelela we-short-circuit current futhi iqinisekise ukuzinza nokuthembeka kwenethiwekhi yokusabalalisa.
Ekusetshenzisweni okungokoqobo, amakhoyili okucindezela i-arc alawulwa ngesigaba adlala indima ebalulekile ekuthuthukiseni ukusebenza okuphelele kwezinhlelo zikagesi.Ikhono layo lokuhlinzeka ngokulawulwa okulawulwayo kwamanani okusabela kuyenza ibe yimpahla ebalulekile yokuphatha ikhwalithi yamandla nokuqinisekisa ukusebenza kahle kwamanethiwekhi okusabalalisa.
Kafushane, isethi ephelele yamakhoyili okucindezela i-arc ahlukaniswe ngezigaba inikeza isisombululo esiyinkimbinkimbi sokuphatha imisinga ye-short-circuit kanye nokuthuthukisa ukusebenza kwamanethiwekhi okusabalalisa.Izimiso zayo zesakhiwo kanye nokulawula kuyenza ibe ingxenye ebalulekile yezinhlelo zamandla zanamuhla, okuneqhaza ekuthembekeni kukonke kanye nokuzinza kwengqalasizinda yamandla.
Isikhathi sokuthumela: Jun-07-2024