Gwajin wutar lantarki na AC mai jure wa wutar lantarki gwaji ne wanda ake amfani da wutar lantarki ta sinusoidal ikon mitar AC wanda ya wuce wasu nau'ikan wutar lantarki da aka ƙididdigewa a kan jujjuyawar injin da aka gwada tare da bushing, kuma tsawon lokacin shine 1 min.Manufarsa ita ce a yi amfani da wutar lantarki mafi girma fiye da wasu nau'ikan nau'ikan wutar lantarki da aka ƙididdigewa don maye gurbin yawan ƙarfin lantarki da na ciki don tantance aikin insulation na taswira.Hanya ce mai inganci don gano ƙarfin kumbura na taransfoma, sannan kuma abu ne mai mahimmanci na gwaji don tabbatar da amincin aiki na taransfoma da kuma guje wa haɗarin rufewa.Gudanar da gwaje-gwajen ƙarfin ƙarfin AC na iya samun danshi da lahani mai mahimmanci a cikin babban rufin gidan wutar lantarki, kamar iskar babban rufin rufin wuta, sassautawar iska da ƙaura, Nisan rufin gubar bai isa ba, kuma rufin yana manne da lahani kamar datti.
HV Hipot GDTF jerin mitar kebul na juyawa jerin rawan jure na'urar gwajin wutar lantarki
Gwajin jurewar wutar lantarki na AC gwaji ne mai ɓarna a cikin gwajin insulation.Dole ne a gwada shi bayan wasu gwaje-gwajen marasa lalacewa (kamar juriya na insulation da gwajin rabo na sha, gwajin ɗigon ruwa na DC, yanke asarar dielectric da gwajin mai) sun cancanta..Bayan wannan gwajin ya cancanta, ana iya sanya na'urar transfoma aiki.Gwajin jurewar wutar lantarki na AC babban gwaji ne.Saboda haka, ka'idojin gwajin rigakafin sun ƙulla cewa mai canzawa tare da 10kV da ƙasa, a cikin shekaru 1 ~ 5, 66kV da ƙasa, dole ne a jure wa AC jurewar wutar lantarki bayan haɓakawa, bayan maye gurbin windings da gwajin lokacin da ya dace.
Hanyar gwaji
(1) Gwajin wayoyi kanana da matsakaitan wutar lantarki da ke ƙasa da 35kV ana amfani da su tare da ƙarfin gwajin ƙarfin AC.Dole ne a gwada duk iska.Yayin gwajin, wayoyin gubar na kowane juzu'i ya kamata a gaje su tare.Idan wurin tsaka tsaki yana da wayoyi masu guba, kuma yakamata a yi gajeriyar wayoyi masu gubar tare da matakai uku.
(2) Gwajin wutan lantarki Ma'aunin gwajin handover ya nuna cewa tasfoma masu ƙarfin ƙasa da 8000kV da ƙarfin wutar lantarki da ke ƙasa da 110kV za a yi gwajin ƙarfin ƙarfin AC daidai da ƙa'idodin ƙarfin gwajin da aka jera a shafi na 1 na ma'auni.Dokokin gwaji na rigakafi sun ƙayyadad da: Ƙimar gwajin ƙarfin lantarki na mai canza mai da aka nutsar da shi an yi dalla-dalla a cikin jadawalin ƙa'ida (gwajin na yau da kullun yana maye gurbin ƙimar ƙarfin wutar lantarki ta sashi).Don masu canjin busassun busassun, lokacin da aka maye gurbin duk iska, bi ƙimar gwajin gwajin masana'anta;don maye gurbin juzu'i na windings da gwaje-gwaje na yau da kullun, danna sau 0.85 ƙimar ƙarfin gwajin masana'anta.
(3) Tsare-tsare Baya ga ka'idodin gwajin ƙarfin ƙarfin AC na gabaɗaya, ya kamata a lura da waɗannan abubuwan gwargwadon halayen na'urar.
1) Dole ne a samar da taswirar gwaji tare da na'urar balaguron kariya mai wuce gona da iri.
2) A AC jure ƙarfin lantarki gwajin na uku-phase transformer baya bukatar da za a gudanar a cikin matakai.Duk da haka, duk wayoyi masu gubar na nau'ikan iska guda uku na haɗin kai dole ne su kasance cikin gajeren lokaci kafin gwajin, in ba haka ba ba kawai zai yi tasiri ga daidaiton ƙarfin gwajin ba, har ma yana iya yin haɗari ga babban rufin na'urar.
3) Ka'idodin gwajin rigakafin sun nuna cewa ga duk masu canza wutan lantarki da ke ƙasa da 66kV, lokacin da yanayin wurin ba a samu ba, kawai mitar ginin waje yana jure gwajin ƙarfin lantarki.
4) Ga masu isar da wutar lantarki waɗanda insulation tsaka tsaki ya fi sauran sassa ko insulation masu daraja, ba za a iya amfani da gwajin ƙarfin ƙarfin AC na sama da ke sama ba, amma induction jure ƙarfin wutar lantarki sau 1.3 yakamata a yi amfani da shi.
5) Dole ne a gwada bayan an cika shi da ingantaccen mai kuma a huta na wani ɗan lokaci.
6) Don matsakaita-da ƙananan ƙarfin aiki tare da matakin ƙarfin lantarki na 35kV, ana ba da izinin auna ƙarfin gwajin a gefen ƙananan ƙarfin wutan lantarki.Don masu taswirar wutar lantarki masu girma da girma, don tabbatar da ma'aunin daidai kuma abin dogaro, ya kamata a yi amfani da injin wutar lantarki ko na'urar lantarki.Ana auna ƙarfin gwajin kai tsaye a gefen babban ƙarfin lantarki.
7) Idan fitarwa ko rushewar ta faru yayin gwajin, nan da nan rage ƙarfin lantarki kuma yanke wutar lantarki don guje wa faɗuwar lalacewa.
Lokacin aikawa: Janairu-05-2022