Izici zokubopha umbani nokugcinwa

Izici ze-Surge arrester:
1. Isibambi se-zinc oxide sinamandla amakhulu okugeleza,
okubonakala ngokuyinhloko ekhonweni lesibambi sokumunca ama-overvoltage ahlukahlukene ombani, ama-overvoltages esikhashana amandla emvamisa yesikhashana, kanye nama-overvoltages okusebenza.Umthamo wokugeleza we-zinc oxide surge arresters okukhiqizwa u-Chuantai uhlangabezana ngokugcwele noma udlule izimfuneko zezindinganiso zikazwelonke.Izinkomba ezifana nezinga lokukhishwa komugqa, umthamo wokumunca amandla, ukumelana nomthelela wamanje ongu-4/10 nanosecond, kanye nomthamo wokugeleza kwegagasi lesikwele esingu-2ms kufinyelele ezingeni eliholayo lasekhaya.
2. Izici zokuvikela ezinhle kakhulu
i-zinc oxide arrester I-Zinc oxide arrester iwumkhiqizo kagesi osetshenziselwa ukuvikela izinto ezihlukahlukene zikagesi ohlelweni lwamandla emonakalweni we-overvoltage, futhi inokusebenza okuhle kokuvikela.Ngenxa yokuthi izici ezingaqondile ze-volt-ampere zevalve ye-zinc oxide zinhle kakhulu, amakhulu ambalwa kuphela ama-microamp okugeleza kwamanje ngaphansi kwe-voltage evamile yokusebenza, elula ukuyiklama ibe isakhiwo esingenasikhala, ukuze ibe nokusebenza okuhle kokuvikela, ukukhanya. isisindo kanye nosayizi omncane.isici.Lapho i-overvoltage ihlasela, i-current egeleza nge-valve ikhula ngokushesha, futhi ngesikhathi esifanayo ibeka umkhawulo we-amplitude ye-overvoltage futhi ikhulula amandla we-overvoltage.Ngemva kwalokho, i-valve ye-zinc oxide ibuyela esimweni sokumelana okuphezulu ukwenza uhlelo lwamandla lusebenze ngokujwayelekile.
3. Ukusebenza kokuvala kwesibambi se-zinc oxide kuhle.I
izingxenye zokubopha zisebenzisa ijazi elihlanganisiwe lekhwalithi ephezulu elinokusebenza okuhle kokuguga kanye nokuqina komoya okuhle.Izinyathelo ezinjengokulawula ukucindezelwa kwendandatho yokuvala nokwengeza i-sealant ziyamukelwa.Ijacket ye-ceramic isetshenziswa njengento yokuvala ukuze kuqinisekiswe ukubekwa uphawu okuthembekile.Ukusebenza kombopheli kuzinzile.
4. Ukusebenza kwemishini kwesibambi se-zinc oxide
ikakhulukazi ibheka izici ezintathu ezilandelayo:
⑴Ukuzamazama komhlaba okukuthwalayo;
⑵Ingcindezi yomoya ephezulu esebenza kwisibambi ⑶I
phezulu kwesibambi kuthwala ukungezwani okuphezulu okuvumelekile kocingo.
5. Kuhle
ukusebenza okulwa nokungcola kwe-zinc oxide arrester Ayikho igebe le-zinc oxide arrester enokusebenza okuphezulu kokumelana nokungcola.
Amabanga akhethekile webanga ashiwo ngamazinga amanje kazwelonke yilawa:
⑴Izindawo ezingcole ngokumaphakathi: ibanga elithile le-creepage 20mm/kv
⑵Izindawo ze-Class III ezingcoliswe kakhulu: ibanga elithile le-creepage 25mm/kv
⑶IV izindawo ezingcoliswe ngendlela emangalisayo: ibanga elithile le-creepage 31mm/kv
6. Ukuthembeka okuphezulu kokusebenza kwe-zinc oxide arrester Ukuthembeka
ukusebenza kwesikhathi eside kuncike kwikhwalithi yomkhiqizo nokuthi ukukhethwa komkhiqizo kunengqondo yini.Izinga lemikhiqizo yalo lithinteka kakhulu yizici ezintathu ezilandelayo:
A. Ukuhluzeka kwesakhiwo sonke sombophi;
B. Izici ze-volt-ampere nokumelana nokuguga kwepuleti le-valve ye-zinc oxide;
C. Ukusebenza kokuvalwa kombopheli.
7. Ukubekezelela imvamisa yamandla
Ngenxa yezizathu ezihlukahlukene ohlelweni lwamandla njengokumisa kwesigaba esisodwa, imiphumela yesikhathi eside ye-capacitive, nokucisha ukulayisha, i-voltage yefrikhwensi yamandla izokwenyuka noma kuzokwenziwa u-overvoltage wesikhashana one-amplitude ephezulu.Ikhono lokumelana nokunyuka kwe-voltage ethile yamandla phakathi nenkathi ethile yesikhathi.
Ukusetshenziswa kokubopha:
1. Kufanele ifakwe eduze kohlangothi lwe-transformer yokusabalalisa.I
i-metal oxide arrester (MOA) ixhunywe ngokuhambisana ne-transformer yokusabalalisa ngesikhathi sokusebenza okuvamile, nesiphelo esingaphezulu sixhunywe kulayini futhi isiphetho esiphansi sisekelwe.Uma kune-overvoltage emgqeni, i-transformer yokusabalalisa ngalesi sikhathi izomelana nokwehla kwe-voltage ezingxenye ezintathu ezikhiqizwa lapho i-overvoltage idlula ku- arrester, intambo eholayo kanye nedivayisi yokumisa phansi, ebizwa ngokuthi i-voltage residual.Kulezi zingxenye ezintathu ze-overvoltage, i-voltage eyinsalela yesibopheleli ihlobene nokusebenza kwayo, futhi inani layo le-voltage eliyinsalela liqinisekile.I-voltage eyinsalela kudivayisi yokubeka phansi ingaqedwa ngokuxhuma i-downconductor ephansi negobolondo le-transformer yokusabalalisa, bese uyixhuma kudivayisi yokubeka phansi.Indlela yokunciphisa i-voltage esele ekuholeni iba yisihluthulelo sokuvikela i-transformer yokusabalalisa.I-impedance yokuhola ihlobene nemvamisa yamanje edlula kuyo.Ukuphakama kwe-frequency, i-inductance yocingo inamandla futhi i-impedance enkulu.Kungabonakala ku-U=IR ukuthi ukuze kwehliswe i-voltage eyinsalela kumthofu, ukubambezeleka komthofu kufanele kuncishiswe, futhi indlela engenzeka yokunciphisa ukuthimbeka komthofu ukufinyeza ibanga phakathi kwe-MOA kanye i-transformer yokusabalalisa ukuze kuncishiswe i-impedance yokuhola nokunciphisa ukwehla kwe-voltage ye-lead, ngakho-ke kufaneleka kakhulu ukuthi isibambisi kufanele sifakwe eduze kwe-transformer yokusabalalisa.
2. Uhlangothi lwe-low-voltage lwe-transformer yokusabalalisa kufanele lufakwe
Uma ingekho i-MOA efakwe ohlangothini lwe-low-voltage yesiguquli sokusabalalisa, lapho isibambisi se-high-voltage side sikhipha amandla ombani emhlabeni, ukwehla kwamandla kagesi kuzokwenzeka endaweni ephansi, futhi ukwehla kwamandla kagesi kuzosebenza. indawo engathathi hlangothi yohlangothi lwe-low-voltage elijikayo ngegobolondo lesiguquli sokusabalalisa ngesikhathi esifanayo.Ngakho-ke, umbani ogeleza endaweni ejikajikayo eseceleni ene-voltage ephansi uzodala amandla aphezulu (afinyelela ku-1000 kV) ekujikeni ohlangothini lwamandla kagesi aphezulu ngokwesilinganiso soguquko, futhi leli khono lizokwengezwa ngamandla kagesi ombani aphezulu. -i-voltage side winding, okuholela ekungeneni kwephoyinti eliphakathi nendawo lokukhuphuka okusohlangothini lwe-voltage ephezulu, okubhidliza ukufakwa eduze kwendawo emaphakathi.Uma i-MOA ifakwe ohlangothini lwe-voltage ephansi, lapho uhlangothi lwamandla kagesi aphezulu i-MOA ludedela ukuze kukhuphule amandla edivayisi ephansi ibe inani elithile, i-MOA yohlangothi oluphansi lwevoltage iqala ukuphuma, ukuze umehluko ongaba khona phakathi kokuphansi. -i-voltage side winding outlet terminal kanye nephoyinti layo elingathathi hlangothi kanye negobolondo liyancipha, ukuze Ikwazi ukuqeda noma yehlise ithonya lamandla "okuguqulwa okuhlanekezelwe".
3. Intambo yaphansi ye-MOA kufanele ixhunywe kugobolondo le-transformer yokusabalalisa
.Intambo yomhlabathi ye-MOA kufanele ixhunywe ngokuqondile kugobolondo le-transformer yokusabalalisa, bese igobolondo kufanele lixhunywe phansi.Akulungile ukuxhuma intambo yaphansi yesibambi ngqo phansi, bese uhola enye intambo yaphansi ukusuka enqwabeni yaphansi kuya kugobolondo le-transformer.Ukwengeza, ucingo oluphansi lwesibambi kufanele lube lufushane ngangokunokwenzeka ukuze kuncishiswe i-voltage esele.
4. Landela ngokuqinile izimfuneko zemithethonqubo yokuhlolwa kokulungisa okujwayelekile.
Kala ngezikhathi ezithile ukumelana nokufakelwa kanye nokuvuza kwamanje kwe-MOA.Uma ukumelana nokufakwa kwe-MOA kwehliswe kakhulu noma kuphukile, kufanele kushintshwe ngokushesha ukuze kuqinisekiswe ukusebenza okuphephile nokunempilo kwe-transformer yokusabalalisa.
Ukusebenza nokugcinwa kokuboshwa:
Ekusebenzeni kwansuku zonke, isimo sokungcoliswa komkhono we-porcelain wesibambi kufanele sihlolwe, ngoba lapho umkhono we-porcelain ungcoliswe kakhulu, ukusatshalaliswa kwamandla kagesi kuzohluka kakhulu.Ku- arrester with parallel shunt resistance, lapho ukusatshalaliswa kwe-voltage kwesinye sezakhi kwanda, ukudlula kwamanje ngokumelana kwayo okuhambisanayo kuzokwanda kakhulu, okungase kushise ukumelana okufanayo futhi kubangele ukwehluleka.Ngaphezu kwalokho, kungase futhi kuthinte ukusebenza kokucisha i-arc kwesibambi se-valve.Ngakho-ke, lapho ingaphezulu lomkhono we-porcelain obamba umbani ungcoliswe kakhulu, kufanele uhlanzwe ngesikhathi.
Hlola intambo eholayo kanye nomthofu ophansi ophansi wesibopheli, ukuthi akhona yini amamaki ashile nezintambo eziphukile, kanye nokuthi isiqophi sokukhipha sishile yini.Ngalokhu kuhlola, kulula kakhulu ukuthola isici esingabonakali somuntu oboshiwe;Ukungena kwamanzi nokuswakama kungabangela izingozi kalula, ngakho hlola ukuthi ilunga likasimende elihlangene phakathi komkhono we-porcelain ne-flange liqinile yini, bese ufaka isembozo esingangeni manzi ocingweni oluholayo lwe-valve yohlobo lwe-10 kV ukuze uvikele amanzi emvula. ukungena;hlola isibambisi kanye nogesi ovikelekile Kungakhathaliseki ukuthi ibanga likagesi phakathi kwezinto zokusebenza lihlangabezana nezidingo, isibambisi sombani kufanele sibe seduze ngangokunokwenzeka nempahla kagesi evikelwe, futhi isibambi sombani kufanele sihlole isenzo serekhoda ngemva kokuduma kwezulu;hlola ukuvuza kwamanje, futhi lapho i-voltage yokukhipha imvamisa yamandla inkulu noma ingaphansi kwenani elijwayelekile, kufanele ilungiswe futhi ihlolwe;lapho irekhoda yokukhipha isebenza izikhathi eziningi, kufanele ilungiswe kabusha;uma kukhona ukuqhekeka ekuhlanganyeleni phakathi komkhono we-porcelain nosimende;lapho ipuleti le-flange kanye nephedi lerabha liwa, kufanele lilungiswe.
Ukumelana ne-insulation of the arrester kufanele kuhlolwe njalo.Imitha yokufaka engu-2500 volt isetshenziselwa ukulinganisa, futhi inani elilinganisiwe liqhathaniswa nomphumela wangaphambilini.Uma lungekho ushintsho olusobala, lungaqhubeka nokusetshenziswa.Uma ukumelana nokufakwa kwe-insulation kwehla kakhulu, ngokuvamile kubangwa ukuvaleka kahle nokuswakama noma i-spark gap short circuit.Uma iphansi kunevelu elifanelekayo, kufanele kwenziwe ukuhlolwa kwesici;lapho ukumelana nokufakwa kwe-insulation kukhula kakhulu, ngokuvamile kungenxa yokuxhumana okungalungile noma ukuphuka kokumelana kwangaphakathi okuhambisanayo Kanye nokuphumula kwentwasahlobo nokuhlukaniswa kwengxenye yangaphakathi.
Ukuze kutholwe amaphutha afihliwe ngaphakathi kwesibambi se-valve kusenesikhathi, ukuhlolwa kokuvimbela kufanele kwenziwe ngaphambi kwenkathi yonyaka yokuduma kwezulu.