Ukuqonda ukubaluleka kweKhabhinethi yeTransformer Neutral Point Grounding Resistance kwiiNkqubo zaMandla

Kwinkqubo yombane yelizwe lam, igridi yombane ye-6-35KV AC idlala indima ebalulekileyo ekuqinisekiseni unikezelo lombane oluzinzileyo noluthembekileyo kwimimandla yasezidolophini.Ngaphakathi kwesi sixokelelwano, iindawo ezingathathi hlangothi zilawulwa ngeendlela ezahlukeneyo zokumisa ezifana ne-arc yokunciphisa iikhoyili, ukuxhathisa okuphezulu, kunye nokuxhaswa okuncinci.Nangona kunjalo, enye indlela ebalaseleyo ekusebenzeni kwayo kukungathathi hlangothi kokumelana nendawo, okubandakanya ukusetyenziswa kwekhabhinethi yokumelana ne-transformer neutral point grounding.

Kwiinkqubo zamandla, ngokukodwa ezo zineentambo njengeendlela eziphambili zokuhambisa, i-ground capacitor current inokubaluleka, ekhokelela ekubeni kwenzeke "i-intermittent" ye-arc overvoltage yomhlaba phantsi kweemeko ezithile "ezibalulekileyo".Apha kulapho indlela yokusekela inqaku elingathathi hlangothi ingena khona.Ngokuvelisa ukugqithisa komhlaba kunye nokwenza umjelo wokukhupha amandla kwi-grid-to-ground capacitance, le ndlela ifaka ukuchasana kwangoku kwi-fault point point, ebangela ukuba kubekho impazamo yomhlaba.

Ipropathi ye-resistance-capacitance yendlela engathathi hlangothi yokumelana nokunciphisa inciphisa umehluko we-angle yesigaba kunye nombane, ngaloo ndlela inciphisa izinga lokutsha kwakhona emva kokuba i-fault point yangoku inqumla i-zero.Oku kuphula ngokufanelekileyo imeko "ebalulekileyo" ye-arc overvoltage kunye nokunciphisa ukugqithisa ngokuphindaphindiweyo ngamaxesha amaninzi ombane wesigaba ngaphakathi kwe-2.6.Ukongezelela, le ndlela iqinisekisa ukhuseleko lomhlaba olunobuthathaka kakhulu ngelixa ichaza ngokuchanekileyo kwaye isusa iimpazamo eziphambili kunye nesibini kwi-feeder, ngaloo ndlela ikhusela ukusebenza okuqhelekileyo kwenkqubo.

Ikhabhinethi ye-transformer neutral point grounding resistance resistance idlala indima ebalulekileyo ekuphumezeni indlela yokumisa inqaku elingathathi hlangothi.Ibonelela ngeziseko zophuhliso eziyimfuneko zokulawula nokulawula ukuxhathisa komgangatho, ukuqinisekisa ukuba inkqubo yamandla isebenza ngokufanelekileyo nangokukhuselekileyo.Ngokuqonda ukubaluleka kwesi sixhobo kunye nendlela eququzelelayo, abaqhubi benkqubo yamandla banokukhusela ngokufanelekileyo ngokuchasene neziphene zomhlaba kwaye baqinisekise ukunikezelwa kombane okungenakuphazamiseka kwiindawo zasezidolophini.

Ukuqukumbela, i-transformer neutral point grounding resistance resistance, idibene ne-neutral point resistance grounding method, iyinxalenye ebalulekileyo ekugcineni uzinzo nokuthembeka kweenkqubo zamandla.Indima yayo ekudambiseni iziphene kunye nokugqithiswa kwamandla ombane ibalulekile ekuqinisekiseni ukusebenza ngokuqhubekayo nokukhuselekileyo kweenkqubo zobonelelo lwamandla ezidolophini.