Iimpawu zokubamba i-Surge:
1. Isibambi se-zinc oxide sinomthamo omkhulu wokuhamba,
ebonakaliswa ikakhulu kwisakhono sombambisi ukufunxa umbane ogqithileyo ohlukeneyo, amandla ombane odlulayo odlulayo odlulayo, kunye nee-overvoltages zokusebenza.Umthamo wokuhamba kwe-zinc oxide surge arresters eveliswa nguChuantai ihlangabezana ngokupheleleyo okanye idlula iimfuno zemigangatho yelizwe.Iimpawu ezifana nenqanaba lokukhutshwa komgca, umthamo wokufunxa amandla, i-4/10 nanosecond ephezulu yokumelana nempembelelo yangoku, kunye ne-2ms ye-square wave umthamo wokuhamba ufikelele kwinqanaba eliphambili lasekhaya.
2. Iimpawu zokukhusela ezigqwesileyo
i-zinc oxide arrester I-Zinc oxide arrester yimveliso yombane esetyenziselwa ukukhusela izixhobo zombane ezahlukeneyo kwinkqubo yamandla kumonakalo ogqithiseleyo, kwaye inomsebenzi wokukhusela ofanelekileyo.Ngenxa yokuba iimpawu ze-volt-ampere ezingabonakaliyo zevalve ye-zinc oxide zilungile kakhulu, ngamakhulu ambalwa kuphela ama-microamps okuhamba ngoku ngaphantsi kombane osebenzayo oqhelekileyo, olungele ukuyilwa kwisakhiwo esingenasikhewu, ukuze usebenze kakuhle, ukukhanya. ubunzima kunye nobukhulu obuncinci.uphawu.Xa i-overvoltage ihlasela, i-current flowing through valve iyanda ngokukhawuleza, kwaye ngexesha elifanayo linciphisa i-amplitude ye-overvoltage kwaye ikhuphe amandla okugqithisa.Emva koko, i-valve ye-zinc oxide ibuyela kwi-high-resistance state ukwenza inkqubo yamandla isebenze ngokuqhelekileyo.
3. Ukusebenza kokutywinwa kwe-zinc oxide arrester kulungile.I
izinto zokubanjwa zithatha ijacket edityanisiweyo ekumgangatho ophezulu esebenza kakuhle ukwaluphala kunye nokuqina okuhle komoya.Amanyathelo afana nokulawula ukunyanzeliswa kweringi yokutywina kunye nokongeza i-sealant yamkelwa.Ijacket ye-ceramic isetyenziswe njengento yokutywina ukuqinisekisa ukutywinwa okuthembekileyo.Ukusebenza kombambeli kuzinzile.
4. Ukusebenza komatshini we-zinc oxide arrester
ikakhulu iqwalasela le miba mithathu ilandelayo:
⑴Inyikima iyayithwala;
⑵Obona xinzelelo lomoya luphezulu olusebenza kumbambeli ⑶I
umphezulu wombambisi unobunzima obuphezulu obuvumelekileyo bocingo.
5. Kulungile
ukusebenza kokuchasana nokungcoliseka kwe-zinc oxide arrester Akukho sithuba se-zinc oxide arrester sinokusebenza okuphezulu kokumelana nongcoliseko.
Amanqaku omgama athe kratya acaciswa yimigangatho yesizwe yangoku ngala:
⑴Udidi II iindawo ezingcoliseke ngokuphakathi: umgama othe ngqo we-creepage 20mm/kv
⑵Imimandla ye-III engcoliseke kakhulu: umgama othe ngqo we-creepage 25mm/kv
⑶IV indawo engcoliseke ngokungaqhelekanga: umgama othe ngqo we-creepage 31mm/kv
6. Ukuthembeka okuphezulu kokusebenza kwe-zinc oxide arrester Ukuthembeka
yokusebenza kwexesha elide kuxhomekeke kumgangatho wemveliso nokuba ukukhethwa kwemveliso kunengqiqo.Umgangatho weemveliso zayo uchaphazeleka ikakhulu yile miba mithathu ilandelayo:
A. Ingqiqo yolwakhiwo lulonke lombambisi;
B. Iimpawu ze-volt-ampere kunye nokumelana nokuguga kwe-zinc oxide valve plate;
C. Ukusebenza kokutywinwa kombambi.
7. Ukunyamezela amaza ombane
Ngenxa yezizathu ezahlukeneyo kwinkqubo yamandla enjengendawo yokubekwa phantsi kwenqanaba elinye, iziphumo zexesha elide ze-capacitive, kunye nokucinywa komthwalo, amandla ombane aphindaphindwayo aya kunyuka okanye umbane ogqithisayo odlulayo one-amplitude ephezulu iya kuveliswa.Ukukwazi ukumelana nokunyuka kwamandla ombane athile ngexesha elithile.
Ukusetyenziswa kokubamba:
1. Kufuneka ifakwe kufuphi necala le-transformer yokusabalalisa.I
i-metal oxide arrester (MOA) idibaniswe ngokuhambelana ne-transformer yokusabalalisa ngexesha lokusebenza ngokuqhelekileyo, kunye nesiphelo esiphezulu sixhunyiwe kumgca kunye nesiphelo esisezantsi sisekelwe.Xa kukho i-overvoltage kumgca, i-transformer yokusabalalisa ngeli xesha iya kumelana nokuhla kwe-voltage yamacandelo amathathu eveliswayo xa i-overvoltage idlula kwi- arrester, i-lead wire kunye nesixhobo sokumisa, esibizwa ngokuba yi-voltage eseleyo.Kwezi nxalenye zintathu zombane ogqithisileyo, amandla ombane ashiyekileyo kumbambeli anxulumene nokusebenza kwawo, kwaye ixabiso lawo lombane elishiyekileyo liqinisekile.I-voltage eseleyo kwisixhobo sokumisa inokupheliswa ngokudibanisa i-downconductor ephantsi kwi-shell transformer shell, kwaye emva koko idibanise kwisixhobo sokumisa.Indlela yokunciphisa i-voltage eseleyo kwi-lead iba ngundoqo ekukhuseleni i-transformer yokusabalalisa.I-impedance ye-lead ihambelana nokuphindaphinda kwangoku okudlula kuyo.Ukuphakama kwe-frequency, yomelele ngakumbi i-inductance yocingo kunye ne-impedance enkulu.Inokubonwa kwi-U = IR ukuba ukuze kuncitshiswe amandla ombane ashiyekileyo kwisikhokelo, ukunyanzeliswa kwesikhokelo kufuneka kuncitshiswe, kwaye indlela enokwenzeka yokunciphisa ukungasebenzi kwesikhokelo kukunciphisa umgama phakathi kwe-MOA kunye i-transformer yokusabalalisa ukunciphisa i-impedance ye-lead kunye nokunciphisa ukuhla kwe-voltage ye-lead, ngoko Kufanelekile ngakumbi ukuba umbambeli kufuneka afakwe kufuphi ne-transformer yokusabalalisa.
2. Icala le-low-voltage ye-transformer yokusabalalisa kufuneka kwakhona ifakwe
Ukuba akukho MOA efakwe kwicala elisezantsi le-voltage ye-transformer yokusabalalisa, xa i-high-voltage side surge arrester ikhupha umbane okhoyo emhlabeni, ukuhla kombane kuya kwenzeka kwisixhobo sokumisa, kwaye ukuhla kwamandla ombane kuya kusebenza. indawo engathathi hlangothi yecala eliphantsi le-voltage elijikayo ngeqokobhe lokuhambisa isiguquli ngaxeshanye.Ke ngoko, umbane oqukuqelayo kwicala le-voltage ephantsi uya kubangela amandla aphezulu (ukuya kuthi ga kwi-1000 kV) kwicala le-high-voltage emacaleni ngokomlinganiselo woguqulo, kwaye obu buchule buya kufakwa ngaphezu kwamandla ombane aphezulu. -i-voltage side winding, ekhokelela kwindawo engathathi hlangothi ye-high-voltage side winding rises, ephula i-insulation kufuphi nendawo engathathi hlangothi.Ukuba i-MOA ifakwe kwicala le-voltage ephantsi, xa icala le-voltage ephezulu ye-MOA ikhupha ukunyusa amandla esixhobo sokumisa kwixabiso elithile, icala le-MOA eliphantsi-voltage liqala ukukhupha, ukuze umahluko onokubakho phakathi kokuphantsi. -i-voltage kwicala elijikajikayo i-terminal kunye nendawo yayo engathathi hlangothi kunye neqokobhe liyancipha, ukuze Inokuphelisa okanye inciphise impembelelo ye "reverse transformation" enokubakho.
3. Ucingo oluphantsi lwe-MOA kufuneka ludityaniswe kwi-shell transformer shell
.I-MOA yocingo oluphantsi kufuneka ludibaniswe ngokuthe ngqo kwigobolondo yokusabalalisa i-transformer, kwaye ke igobolondo kufuneka idibaniswe phantsi.Akulunganga ukudibanisa ucingo olusezantsi lombambeli ngokuthe ngqo emhlabeni, kwaye emva koko ukhokele enye intambo yokumisa ukusuka kwi-grounding pile ukuya kwigobolondo ye-transformer.Ukongezelela, ucingo oluphantsi komhlaba obambayo kufuneka lube lufutshane kangangoko kunokwenzeka ukunciphisa i-voltage eseleyo.
4. Zilandele ngokuthe ngqo iimfuno zemigaqo yovavanyo lolondolozo lwarhoqo.
Ukulinganisa ngamathuba ukuxhathisa ukugquma kunye nokuvuza kwangoku kwe-MOA.Emva kokuba ukuxhatshazwa kwe-MOA kwe-insulation kuncitshiswe kakhulu okanye kuphulwe, kufuneka kutshintshwe ngokukhawuleza ukuze kuqinisekiswe ukusebenza okukhuselekileyo kunye nempilo ye-transformer yokusabalalisa.
Ukusebenza kunye nokugcinwa kokubamba:
Kumsebenzi wemihla ngemihla, ubume bongcoliseko lomkhono weporcelain wombambisi kufuneka bujongwe, kuba xa umphezulu we-porcelain sleeve ungcoliseke kakhulu, usasazo lombane luya kungalingani kakhulu.Kwi- arrester ene-parallel shunt resistance, xa ukuhanjiswa kwamandla kwelinye lamacandelo kunyuka, i-current passing through its resistance yayo iya kunyuka kakhulu, enokuthi itshise ukuchasana okufanayo kwaye ibangele ukungaphumeleli.Ukongezelela, kunokuchaphazela nokusebenza kwe-arc yokucima i-valve arrester.Ke ngoko, xa umphezulu wesivalo seporcelain esibamba umbane singcoliseke kakhulu, kufuneka sicocwe kwangethuba.
Qwalasela ucingo olukhokelayo kunye nesikhokelo esisezantsi sombambisi, ukuba ngaba akhona na amabala atshileyo kunye nemisonto eyaphukileyo, nokuba isishicileli serekhoda sitshisiwe.Ngolu hlolo, kulula ukufumana isiphene esingabonakaliyo sombambisi;Ukungena kwamanzi kunye nokufuma kunokubangela iingozi ngokulula, ngoko jonga ukuba ijoyini yesamente kwindawo ekudityaniswa kuyo phakathi komkhono weporcelain kunye neflange iqinile, kwaye ufakele isigqubuthelo esingangenwa manzi kucingo olukhokelayo lwesibambisi sohlobo lwevalve eyi-10 kV ukukhusela amanzi emvula. ukungena;jonga umbambisi kunye nombane okhuselweyo Ingaba umgama wombane phakathi kwezixhobo uhlangabezana neemfuno, umqhubi wombane kufuneka abe kufutshane kangangoko kunokwenzeka kwisixhobo sombane esikhuselweyo, kwaye umbane wombane kufuneka uhlolisise isenzo somrekhodi emva kokuduma kwezulu;khangela ukuvuza kwangoku, kwaye xa i-voltage yokukhupha amandla ikhulu okanye ingaphantsi kwexabiso eliqhelekileyo, kufuneka ihlaziywe kwaye ivavanywe;xa irekhoda yokukhupha isebenza ngamaxesha amaninzi, kufuneka ihlaziywe;ukuba kukho iintanda kwi-joint phakathi komkhono we-porcelain kunye ne-samente;xa i-flange plate kunye ne-rubber pad iwa, kufuneka ihlaziywe.
Ukumelana nokufakwa kwe-insulation of arrester kufuneka kuhlolwe rhoqo.Imitha ye-insulation ye-2500 volt isetyenziselwa ukulinganisa, kwaye ixabiso elilinganisiweyo lifaniswa nesiphumo sangaphambili.Ukuba akukho tshintsho lucacileyo, luyakwazi ukuqhubeka nokusebenza.Xa uxhathiso lwe-insulation lwehla kakhulu, lubangelwa ngokubanzi kukutywinwa okulambathayo kunye nokufuma okanye i-spark gap short circuit.Xa iphantsi kwexabiso elifanelekileyo, uvavanyo lweempawu kufuneka lwenziwe;xa ukunyanzeliswa kwe-insulation kuyanda kakhulu, ngokuqhelekileyo kubangelwa ukudibanisa okungahambi kakuhle okanye ukuphuka kwe-internal parallel resistance Kanye nokuphumla kwentwasahlobo kunye nokuhlukana kwecandelo langaphakathi.
Ukuze kufunyanwe iziphene ezifihliweyo ngaphakathi kwi-valve arrester ngexesha, uvavanyo lokuthintela kufuneka lwenziwe ngaphambi kwexesha lokuduma kwezulu.
Ixesha lokuposa: Dec-15-2022