1. Izinto eziphembelela iimpawu zokuthelekisa umahluko wenqanaba
Kwinkqubo ye-Xiushan, ngenxa yeemfuno zobugcisa ezahlukeneyo ze-bureaus zobonelelo lwamandla ekukhetheni umthamo webhetri kwisikhululo ngasinye, imowudi yombane wesikrini se-DC kunye nomlinganiselo kunye nokukhusela isikrini sokukhusela, imo yoqhagamshelwano kunye nokubaluleka kokhuseleko. , izikhundla zokusabalalisa zihluke ngokuhambelanayo, okubangelwa ukukhethwa kweengcingo kunye nabaqhubi.Ummandla we-cross-sectional kunye nobude bahlukeneyo, kwaye ukuhlukana kwezi zinto kuya kubangela ukuba ixabiso lokumelana ne-loop litshintshe, kwaye utshintsho lwexabiso lokumelana nalo luya kubangela ukuba ixabiso lexesha elifutshane litshintshe, libangele i-current-circuit current. kwisikhululo ngasinye ukuba sahluke.Ke ngoko, uyilo lweskimu solungelelaniso lomehluko wenqanaba le-breaker yesekethe yenkqubo ye-DC ye-substation, ngenxa yeenguqu ezinkulu zezinto ezikhankanywe ngasentla, ayizange isombululwe kakuhle kakhulu.
2. Iingozi ezikhoyo ezifihliweyo
Ukuze kuhlangatyezwane neemfuno ezikhethiweyo zokulungelelaniswa komehluko wenqanaba, i-breaker-level circuit breaker ayisebenzi kakubi, okanye nokuba i-high-level malfunctions, ayiyi kubangela ukuba ingozi isasazeke.Namhlanje, i-circuit breaker kunye nokulinganisa kunye nokukhusela ukulawulwa kwisikrini se-feeder (okanye isikrini sokusasazwa kwamandla) kwiinkqubo ezininzi ze-DC I-breaker circuit kwisikrini ithatha imo yokunikezelwa kwamandla enye ukuya kwelinye.Ingxaki ebangelwa yile ndlela kukuba kukho iingcingo ezimbini phakathi kwesibini ngasinye sabaphuli beesekethe.Iimitha ezimbalwa, ngamakhulu eemitha, ezi ziingcingo ezininzi kunye nezide zihlanganiswe kunye, kwaye emva kweminyaka yokusebenza kunye nokusetyenziswa, iingxaki ezinzima kunye neziphithiphithi ziya kwenzeka, ezifana: ukuxhamla okukhululekile phakathi kweengcingo kunye ne-breaker circuit;i-insulation yeingcingo yehla;umonakalo ngengozi, Bite;iingcingo eziphotheneyo zifihla iingozi ezifana neesekethe ezimfutshane ezininzi okanye i-arc yokukhupha umlilo, eya kubangela ingozi enkulu efihliweyo yokulahlekelwa kwamandla ngokupheleleyo kumlinganiselo kunye nokukhusela isikrini sokukhusela.
3. Ukubaluleka komgangatho wokuthelekisa iimpawu
Nokuba amanqanaba aphezulu nasezantsi yesoosan breakerbreakersinokufezekisa ulungelelwaniso lomahluko wenqanaba kuxhomekeke kwixabiso le-short-circuit yangoku equkuqelayo kwi-loop kunye ne-action time difference of the top and low circuit breakers.Ukuphunyezwa okusisiseko kukuphucula ukusebenza kokukhawulelana kwangoku kunye nesantya sokuqhawula i-2A ~ 6A i-circuit breakers yomlinganiselo kunye nokulawula isikrini sokukhusela, kwaye okwesibini kukunyusa umda we-short-circuit instantaneous release threshold of the DC circuit breaker on the power. isikrini sosasazo kunye nekhusi le feeder.Ukulibazisa isenzo.Kuphela xa ixabiso le-short-circuit current kwi-circuit liphantsi kunexabiso elikhawulezayo le-high-level circuit breaker, okanye i-breaker-level circuit breaker phambi kwe-high-level breaker nangona ixabiso elikhawulezayo le-higher-level circuit breaker. i-breaker ifikelelwe, ngaba ulungelelwaniso lomahluko wenqanaba phakathi kwezaphuli zesekethe unokufezekiswa.Ngoko ke, ukuze kuphunyezwe ulungelelwaniso lomahluko wenqanaba, enye indlela kukuphumeza umahluko kwixesha lesenzo sabaphuli beesekethe eziphezulu nasezantsi, kwaye enye indlela kukunciphisa ixabiso langoku lesiphaluka esifutshane.I-current-limiting circuit breaker ye-DC enexabiso elincinci elisisigxina linefuthe elibalulekileyo ekunciphiseni ixabiso lesekethe elifutshane.Ke ngoko, ukusebenza komda wangoku wenqanaba lokugqibela lesiphazamisi esincinci yeyona nto iphambili yolungelelwaniso olukhethiweyo lwenkqubo yonke yeDC.
Ixesha lokuposa: Aug-19-2021
