Injongo kunye nendlela yokuvavanya ye-AC yokumelana novavanyo lombane kwi-transformer

I-transformer ye-AC yokumelana novavanyo lwe-voltage luvavanyo apho i-sinusoidal power frequency frequency AC yokuvavanya i-voltage edlula i-multiple multiple of voltage rated isetyenziswe kwii-windings ze-transformer evavanyiweyo kunye ne-bushing, kwaye ubude be-1 min.Injongo yayo kukusebenzisa i-voltage yovavanyo ephezulu kune-multiple ye-voltage elinganisiweyo ukuze ithathe indawo ye-atmospheric overvoltage kunye nokugqithisa kwangaphakathi ukuvavanya ukusebenza kwe-insulation ye-transformer.Yindlela esebenzayo yokuchonga amandla e-insulation of transformers, kwaye ikwayinto ebalulekileyo yokulinga ukuqinisekisa ukusebenza ngokukhuselekileyo kwee-transformers kunye nokuphepha iingozi zokugquma.Ukuqhuba iimvavanyo zokumelana nombane we-AC kunokufumana ukufuma kunye neziphene ezigxininisiweyo kwi-insulation engundoqo ye-transformer, njenge-winging main insulation cracks, i-winging insulation and displacement , Umgama we-insulation okhokelayo awanelanga, kwaye i-insulation ibambelela kwiziphene ezifana nokungcola.

HV Hipot GDTF series cable frequency conversion series resonance withstand device test voltage

Uvavanyo lwe-AC lokumelana ne-voltage luvavanyo olutshabalalisayo kuvavanyo lwe-insulation.Kufuneka ivavanywe emva kokuba ezinye iimvavanyo ezingonakalisi (ezifana nokumelana nokufakwa kwe-insulation kunye novavanyo lwe-absorption ratio, uvavanyo lokuvuza kwe-DC, i-dielectric loss correction cut and insulating oil test) ifanelekile..Emva kokuba olu vavanyo lufanelekile, i-transformer inokufakwa ekusebenzeni.Uvavanyo lwe-AC lokumelana nombane luvavanyo oluphambili.Ke ngoko, imimiselo yovavanyo lothintelo ichaza ukuba i-transformer ene-10kV nangaphantsi, kwiminyaka eyi-1 ~ 5, 66kV nangaphantsi, kufuneka ixhomekeke kwi-AC ukumelana nombane emva kokulungiswa ngokutsha, emva kokutshintshwa kwee-windings kwaye xa kukho imfuneko yovavanyo.

Indlela yokuvavanya

(1) Iintambo zovavanyo zovavanyo Iziguquli zamandla ezincinci neziphakathi ezingaphantsi kwe-35kV zisetyenziswa nge-AC yokumelana novavanyo lweentambo zombane.Zonke ii-winding kufuneka zivavanywe.Ngethuba lovavanyo, iingcingo ezikhokelayo zesigaba ngasinye sokujija kufuneka zibe zifutshane-zijikelezwe kunye.Ukuba indawo engathathi hlangothi ineentambo ezikhokelayo, iingcingo ezikhokelayo kufuneka kwakhona zibe zifutshane-zijikelezwe kunye nezigaba ezintathu.

(2) Uvavanyo lwamandla ombane Umgangatho wovavanyo lonikezelo umisela ukuba ii-transformer ezinomthamo ongaphantsi kwe-8000kV kunye namandla ombane akwizinga elijikajikayo ngaphantsi kwe-110kV ziya kufakwa kuvavanyo lokumelana namandla ombane e-AC ngokungqinelana nemigangatho yovavanyo yombane edweliswe kwiSihlomelo soku-1 somgangatho.Imimiselo yovavanyo lothintelo ichaza: Ixabiso lombane wovavanyo lwe-oyile-i-transformer entywiliselweyo ichazwe kwitheyibhile yommiselo (uvavanyo oluqhelekileyo luthatha indawo yexabiso lombane ojikayo ngenxalenye).Kwiziguquli zohlobo olomileyo, xa zonke ii-winding zitshintshwa, landela ixabiso lombane wovavanyo lwefektri;ukutshintshwa ngokuyinxenye kwe-windings kunye neemvavanyo eziqhelekileyo, cinezela amaxesha angama-0.85 ixabiso lombane wovavanyo lwefektri.

(3) Izilumkiso Ukongeza kwi-AC ngokubanzi yokumelana nemilinganiselo yovavanyo lombane, la manqaku alandelayo kufuneka aqatshelwe ngokweempawu zesiguquli:

I-1) I-transformer yokuvavanya kufuneka ixhotyiswe ngesixhobo sohambo lokukhusela olugqithisiweyo.

2) I-AC yokumelana novavanyo lwe-voltage ye-transformer yesigaba sesithathu ayifuni ukuba yenziwe ngezigaba.Nangona kunjalo, zonke iingcingo ezikhokelayo zezigaba ezithathu zokudibanisa okudibeneyo kufuneka zibe zifutshane-zijikelezwe ngaphambi kovavanyo, ngaphandle koko aziyi kuchaphazela kuphela ukuchaneka kombane wokuvavanya, kodwa zinokuthi zibeke emngciphekweni i-insulation main of transformer.

I-3) Imimiselo yovavanyo lokukhusela ichaza ukuba zonke ii-transformers ezifakwe phantsi kwe-66kV, xa iimeko zesayithi zingafumaneki, kuphela i-frequency yokwakhiwa kwangaphandle yokumelana novavanyo lwe-voltage lunokwenziwa.

I-4) Kwiziguquli zamandla ezinendawo engathathi hlangothi e-insulation ibuthathaka kunezinye iindawo okanye i-insulation graded, i-AC yangaphandle yangaphandle yokuvavanya i-voltage ayinakusetyenziswa, kodwa i-induction ukumelana novavanyo lwe-voltage amaxesha angama-1.3 kufuneka isetyenziswe amandla ombane.

5) Kufuneka ihlolwe emva kokuzaliswa ngeoli efanelekileyo kunye nokuphumla ixesha elithile.

6) Kwi-medium-and-capacity-capacity transformers kunye nenqanaba le-voltage ye-35kV, umbane wokuvavanya uvumelekile ukuba ulinganiswe kwicala le-low-voltage ye-transformer yokuvavanya.Kubaguquli bamandla abanomthamo omkhulu, ukwenzela ukuba umlinganiselo uchanekileyo kwaye unokwethenjelwa, kufuneka kusetyenziswe i-voltage transformer okanye i-voltmeter ye-electrostatic.Umbane wovavanyo ulinganiswa ngokuthe ngqo kwicala lombane ophezulu.

7) Ukuba ukukhutshwa okanye ukuphuka kwenzeka ngexesha lovavanyo, ngokukhawuleza unciphise i-voltage kwaye unqumle umbane ukuze ugweme ukungaphumeleli okwandisiweyo.