Kwinkulu yangoku inkqubo, ukuze kuhlangatyezwane neemfuno zolungelelaniso lobuntununtunu bokhuseleko, inxalenye yesiguquli esiphambili kufuneka ibe umhlaba, kwaye enye inxalenye ayisekelwanga.

Ukuba iingongoma ezingathathi hlangothi ezimbini ze-transformers kwisikhululo esinye azisekelwanga ngexesha elifanayo, eyona nto ibalulekileyo kukulungelelaniswa kwe-zero-sequence. yangoku kunye nokukhuselwa kwamandla ombane wokulandelelana kwe-zero.

I-substation ene-multiple transformers esebenza ngokufana ngokuqhelekileyo ithatha indlela apho indawo engathathi hlangothi yezinye i-transformers isekelwe phantsi, ngelixa i-neutral point yesinye inxalenye ye-transformer ayigxili. Ngale ndlela, umgangatho wangoku wesiphoso somhlaba unokuncitshiswa ngaphakathi koluhlu olufanelekileyo, kwaye kwangaxeshanye, ubukhulu kunye nenyathelo-ngenyathelo lemeko ye-zero-ulandelelwano lwangoku lwalo lonke igridi yamandla aluyi kuchaphazeleka lutshintsho kwi. imo yokusebenza kangangoko kunokwenzeka, kunye novelwano lwe-zero-ulandelelwano lokhuseleko lwangoku lwenkqubo luya kuphuculwa.