Ohlelweni lwamandla ezwe lami, igridi kagesi engu-6-35KV AC idlala indima ebalulekile ekuqinisekiseni ukuhlinzekwa kukagesi okuzinzile nokuthembekile ezindaweni zasemadolobheni.Ngaphakathi kwalolu hlelo, amaphuzu aphakathi nendawo alawulwa ngezindlela ezihlukahlukene zokumisa phansi ezifana namakhoyili okucindezela i-arc, ukusekela ukumelana okuphezulu, kanye nokusekela okuncane kokumelana.Kodwa-ke, enye indlela egqamayo ngokusebenza kwayo isisekelo sokumelana namaphuzu angathathi hlangothi, okubandakanya ukusetshenziswa kwekhabhinethi yokumelana nesisekelo se-transformer neutral point.
Ezinhlelweni zamandla, ikakhulukazi lezo ezinezintambo njengezintambo eziyinhloko zokudlulisa, i-ground capacitor current ingaba ephawulekayo, okuholela ekuveleni kwe-arc overvoltage yomhlabathi "yesikhashana" ngaphansi kwezimo ezithile "ezibucayi".Yilapho indlela yokusekela amaphuzu angathathi hlangothi iqala ukusebenza.Ngokukhiqiza ukugcwala ngokweqile komhlabathi nokwenza umgudu wokukhipha amandla ku-grid-to-ground capacitance, le ndlela ifaka ukumelana namanje endaweni yephutha, okubangela ukuba kwenzeke iphutha lomhlabathi.
Isakhiwo somthamo wokumelana wendlela yokusekela iphuzu elingathathi hlangothi inciphisa umehluko we-engeli yesigaba nge-voltage, ngaleyo ndlela yehlise izinga lokuvutha kabusha ngemva kokuba iphuzu lamanje lephutha liwele uziro.Lokhu kwephula ngokuphumelelayo isimo "esibucayi" sokugcwala kwe-arc futhi kukhawule ukugcwala ngokweqile izikhathi eziningana i-voltage yesigaba ngaphakathi kwe-2.6.Ukwengeza, le ndlela iqinisekisa ukuvikelwa kwamaphutha aphansi azwela kakhulu kuyilapho inquma ngokunembile futhi isusa amaphutha ayinhloko nawesibili okokuphakelayo, ngaleyo ndlela ivikela ukusebenza okuvamile kwesistimu.
Ikhabethe le-transformer neutral point grounding resistance lidlala indima ebalulekile ekusebenziseni indlela yokusekela amaphuzu angathathi hlangothi.Ihlinzeka ngengqalasizinda edingekayo yokuphatha nokulawula ukumelana nesisekelo, iqinisekisa ukuthi uhlelo lwamandla lusebenza kahle futhi ngokuphepha.Ngokuqonda ukubaluleka kwalezi zisetshenziswa kanye nendlela ezisiza ngayo, abaqhubi besistimu kagesi bangavikela ngempumelelo kumaphutha aphansi futhi baqinisekise ukuphakelwa kukagesi okungaphazamiseki ezindaweni zasemadolobheni.
Sengiphetha, ikhabhinethi yokumelana nephuzu elingathathi hlangothi le-transformer, ngokuhambisana nendlela yokusekela amaphuzu angathathi hlangothi, iyingxenye ebalulekile ekugcineni ukuzinza nokuthembeka kwezinhlelo zamandla.Iqhaza layo ekwehliseni amaphutha aphansi kanye nokweqisa kwamandla kagesi kubalulekile ukuze kuqinisekiswe ukusebenza okuqhubekayo nokuphephile kwezinhlelo zokuphakelwa kukagesi emadolobheni.
Isikhathi sokuthumela: May-27-2024