Makhalidwe a Surge arrester:
1. Chomangira zinc oxide chili ndi mphamvu yothamanga kwambiri,
zomwe zimawonetsedwa makamaka ndi kuthekera kwa womangayo kuti azitha kuyamwa ma overvoltages osiyanasiyana amphezi, ma frequency opitilira mphamvu osakhalitsa, ndi ma overvoltages ogwiritsira ntchito.Kuthamanga kwa zinc oxide surge arresters opangidwa ndi Chuantai kumakwaniritsa kapena kupitirira zofunikira za mayiko.Zizindikiro monga mulingo wotulutsa mizere, mphamvu yamayamwidwe, 4/10 nanosecond high current impact resistance, ndi 2ms square wave flow flow yafika pamlingo wotsogola wapakhomo.
2. Makhalidwe abwino achitetezo
wa zinc oxide arrester Zinc oxide arrester ndi chinthu chamagetsi chomwe chimagwiritsidwa ntchito kuteteza zipangizo zosiyanasiyana zamagetsi mumagetsi kuti zisawonongeke zowonongeka, ndipo zimakhala ndi chitetezo chabwino.Chifukwa mawonekedwe a volt-ampere osagwirizana ndi valavu ya zinc oxide ndiabwino kwambiri, ma microamp mazana ochepa okha omwe akuyenda pakali pano akuyenda pansi pa voteji yanthawi zonse, yomwe ndi yabwino kupangidwira kuti ikhale yopanda malire, kuti ikhale ndi chitetezo chabwino, kuwala. kulemera ndi kukula kochepa.mawonekedwe.Pamene overvoltage ikuwomba, mphamvu yomwe ikuyenda kudzera mu valve imakula mofulumira, ndipo nthawi yomweyo imalepheretsa matalikidwe a overvoltage ndikutulutsa mphamvu ya overvoltage.Pambuyo pake, valavu ya zinc oxide imabwerera kumalo osakanizidwa kwambiri kuti mphamvu yamagetsi igwire ntchito bwino.
3. Kusindikiza kosindikiza kwa zinc oxide arrester ndikwabwino.The
zida zomangira zimatengera jekete yapamwamba kwambiri yokhala ndi ukalamba wabwino komanso kulimba kwa mpweya wabwino.Njira monga kuwongolera kuponderezedwa kwa mphete yosindikiza ndi kuwonjezera sealant zimatengedwa.Chovala cha ceramic chimagwiritsidwa ntchito ngati chosindikizira kuti chitsimikizire kusindikiza kodalirika.Ntchito ya womangayo ndi yokhazikika.
4. Kachitidwe ka makina a zinc oxide arrester
makamaka amaganizira zinthu zitatu izi:
⑴Chivomezi champhamvu chomwe chimanyamula;
⑵Kuthamanga kwamphepo kwamphamvu kwa womanga ⑶The
pamwamba pa chomangira amakhala ndi pazipita zololeka mavuto a waya.
5. Zabwino
anti-kuipitsa ntchito ya zinc oxide arrester Palibe gap zinc oxide arrester yomwe ili ndi ntchito yotsutsa kuipitsa kwambiri.
Miyezo yapamtunda ya creepage yotsatiridwa ndi miyezo yapadziko lonse lapansi ndi:
⑴Magawo a Gulu II oipitsidwa pang'ono: mtunda wapakatikati 20mm/kv
⑵Class III malo oipitsidwa kwambiri: mtunda wokhazikika wa 25mm/kv
⑶IV madera oipitsidwa kwambiri: mtunda wokhazikika 31mm / kv
6. High ntchito kudalirika kwa zinc oxide arrester Kudalirika
ntchito kwa nthawi yayitali imadalira mtundu wa mankhwala komanso ngati kusankha kwa mankhwala kuli koyenera.Ubwino wa zinthu zake umakhudzidwa makamaka ndi zinthu zitatu izi:
A. Kulingalira kwa dongosolo lonse la womanga;
B. Makhalidwe a volt-ampere ndi kukana kukalamba kwa mbale ya zinc oxide valve;
C. Kusindikiza kwa womanga.
7. Mphamvu pafupipafupi kulolerana
Chifukwa cha zifukwa zosiyanasiyana mu dongosolo mphamvu monga gawo limodzi grounding, yaitali capacitive zotsatira, ndi katundu kukhetsa, mphamvu pafupipafupi voteji adzawonjezeka kapena kwakanthawi overvoltage ndi apamwamba matalikidwe kwaiye.Kutha kupirira kukwera kwamphamvu kwanthawi yayitali mkati mwa nthawi inayake.
Kugwiritsa ntchito womanga:
1. Iyenera kukhazikitsidwa pafupi ndi mbali ya transformer yogawa.The
metal oxide arrester (MOA) imalumikizidwa mofanana ndi thiransifoma yogawa panthawi yogwira ntchito bwino, ndipo kumapeto kwapamwamba kumalumikizidwa ndi mzere ndipo kumapeto kwake kumakhala pansi.Pamene pali overvoltage pa mzere, ndi kugawa thiransifoma pa nthawi imeneyi kupirira magawo atatu voteji dontho kwaiye pamene overvoltage akudutsa womangidwa, kutsogolera waya ndi grounding chipangizo, amene amatchedwa zotsalira voteji.M'magawo atatuwa a overvoltage, voteji yotsalira pa chomangirira imakhudzana ndi momwe imagwirira ntchito, ndipo mtengo wake wotsalira wamagetsi ndiwotsimikizika.The voteji yotsalira pa chipangizo grounding akhoza kuthetsedwa ndi kulumikiza pansi downconductor kugawa thiransifoma chipolopolo, ndiyeno kulumikiza ndi chipangizo grounding.Momwe mungachepetsere voliyumu yotsalira pa kutsogolera kumakhala chinsinsi choteteza chosinthira chogawa.Kutsekeka kwa kutsogolera kumagwirizana ndi kuchuluka kwa zomwe zikuchitika pano.Kukwera kwafupipafupi, kumapangitsa kuti waya wonyezimira kwambiri komanso kuwonjezereka kwa impedance.Zitha kuwoneka kuchokera ku U = IR kuti kuti muchepetse mphamvu yotsalira pa kutsogolera, kulepheretsa kwa kutsogolo kuyenera kuchepetsedwa, ndipo njira yotheka yochepetsera kutsekeka kwa kutsogolera ndikufupikitsa mtunda pakati pa MOA ndi kugawa thiransifoma kuti muchepetse kutsekeka kwa kutsogolera ndikuchepetsa kutsika kwa voliyumu ya kutsogolera, motero Ndikoyenera kwambiri kuti chomangiracho chiyike pafupi ndi chosinthira chogawa.
2. Mbali yotsika kwambiri ya transformer yogawa iyeneranso kuikidwa
Ngati palibe MOA yomwe imayikidwa pambali yamagetsi otsika a thiransifoma yogawa, pamene chotchinga chamagetsi chapamwamba kwambiri chimatulutsa mphezi padziko lapansi, kutsika kwa magetsi kudzachitika pa chipangizo choyikirapo, ndipo kutsika kwa magetsi kudzachitapo kanthu. mbali ya ndale ya mbali yotsika-voltage yomwe imadutsa mu chipolopolo chogawa thiransifoma nthawi yomweyo.Chifukwa chake, mphezi yomwe ikuyenda m'mbali yotsika-voltage imapangitsa kuti pakhale mphamvu yayikulu (mpaka 1000 kV) pamayendedwe amagetsi apamwamba kwambiri malinga ndi kusintha kwakusintha, ndipo kuthekera kumeneku kudzakhala kokulirapo ndi mphamvu yamagetsi yamphamvu kwambiri. -kupindika kwa mphamvu yamagetsi, zomwe zimapangitsa kuti mbali yamagetsi yamagetsi ikhale yokwera kwambiri, zomwe zimapangitsa kuti magetsi azikhala pafupi ndi malo osalowerera.Ngati MOA imayikidwa kumbali ya low-voltage, pamene mbali yamphamvu kwambiri ya MOA imatulutsa mphamvu ya chipangizo choyatsira pamtengo wina, mbali ya low-voltage MOA imayamba kutuluka, kotero kuti kusiyana komwe kungakhalepo pakati pa otsika. -voltage mbali yokhotakhota yotuluka ndi malo ake osalowerera ndale ndi chipolopolocho chimachepa, kotero kuti Ingathe kuthetsa kapena kuchepetsa mphamvu ya "reverse transformation" yomwe ingatheke.
3. Waya wapansi wa MOA uyenera kulumikizidwa ku chipolopolo cha transformer yogawa
.Waya wapansi wa MOA uyenera kulumikizidwa mwachindunji ndi chipolopolo cha transformer chogawa, ndiyeno chipolopolocho chiyenera kulumikizidwa pansi.Ndizolakwika kulumikiza waya wapansi wa womanga mwachindunji pansi, ndiyeno mutsogolere waya wina wapansi kuchokera pa mulu wapansi kupita ku chipolopolo cha transformer.Kuphatikiza apo, waya wapansi wa womangayo uyenera kukhala waufupi momwe angathere kuti achepetse mphamvu yotsalira.
4. Tsatirani mosamalitsa zofunikira za malamulo oyeserera nthawi zonse.
Yesani nthawi ndi nthawi kukana kwa insulation ndi kutayikira kwa MOA.Pamene kukana kwa kusungunula kwa MOA kumachepetsedwa kwambiri kapena kuphwanyidwa, ziyenera kusinthidwa nthawi yomweyo kuti zitsimikizidwe kuti ntchito yabwino ndi yabwino ya transformer yogawa.
Ogwira ntchito ndi kukonza:
Pogwira ntchito tsiku ndi tsiku, kuipitsidwa kwa manja a porcelain pa chomangira kuyenera kuyang'aniridwa, chifukwa pomwe malaya adothi aipitsidwa kwambiri, kugawa kwamagetsi kumakhala kosiyana kwambiri.Mu chomangira chokhala ndi shunt kukana, pamene kugawa kwamagetsi kwa chimodzi mwa zigawozo kumawonjezeka, zomwe zikuchitika panopa zimadutsa kukana kwake kofanana zidzawonjezeka kwambiri, zomwe zingawotche kukana kofanana ndikupangitsa kulephera.Kuonjezera apo, zingakhudzenso ntchito yozimitsa arc ya chomangira valve.Choncho, pamene pamwamba pa mphezi zomangira zadothi manja zadothi ndi woipitsidwa kwambiri, ayenera kutsukidwa mu nthawi.
Yang'anani mawaya otsogolera ndi kutsogolo pansi kwa womangayo, ngati pali zizindikiro zopsereza ndi zingwe zosweka, komanso ngati chojambulira chotulutsa chatenthedwa.Kupyolera mu kuyendera uku, ndikosavuta kupeza cholakwika chosawoneka cha womanga;Kulowera kwa madzi ndi chinyontho kungayambitse ngozi mosavuta, choncho fufuzani ngati mgwirizano wa simenti womwe uli pakati pa manja a porcelain ndi flange ndi wothina, ndipo ikani chivundikiro chopanda madzi pa waya wotsogolera wa 10 kV valve-type arrester kuti madzi amvula asagwe. kulowa mkati;fufuzani womangidwa ndi magetsi otetezedwa Kaya mtunda wa magetsi pakati pa zipangizozo ukukwaniritsa zofunikira, chomangira mphezi chiyenera kukhala pafupi kwambiri ndi zipangizo zamagetsi zotetezedwa, ndipo woyambitsa mphezi ayenera kuyang'ana zochita za chojambulira pambuyo pa mvula yamkuntho;yang'anani kutayikira kwapano, ndipo mphamvu yotulutsa mphamvu pafupipafupi ikakhala yayikulu kapena yochepera kuposa mtengo wokhazikika, iyenera kusinthidwa ndikuyesedwa;pamene chojambulira chotulutsa chimagwira ntchito nthawi zambiri, chiyenera kusinthidwa;ngati pali ming'alu pa mgwirizano pakati pa manja a porcelain ndi simenti;pamene mbale ya flange ndi mphira wa rabara zikugwa, ziyenera kusinthidwa.
Kukaniza kwa insulation kwa womangayo kuyenera kuyang'aniridwa pafupipafupi.Miyezo yotchinjiriza ya 2500 volt imagwiritsidwa ntchito poyezera, ndipo mtengo wake umafananizidwa ndi zotsatira zam'mbuyomu.Ngati palibe kusintha koonekeratu, zikhoza kupitiriza kuikidwa.Kukana kwa kutchinjiriza kutsika kwambiri, nthawi zambiri kumachitika chifukwa chosasindikiza bwino komanso chinyontho kapena spark gap lalifupi.Zikakhala zotsika kuposa mtengo woyenerera, kuyesedwa kwa chikhalidwe kuyenera kuchitidwa;pamene kukana kwa kutchinjiriza kumawonjezeka kwambiri, nthawi zambiri kumachitika chifukwa chosalumikizana bwino kapena kusweka kwa kukana kofananira kwamkati komanso kupumula kwa kasupe komanso kulekana kwa gawo lamkati.
Kuti muzindikire zolakwika zobisika mkati mwa chotsekera ma valve mu nthawi, kuyezetsa kodziletsa kuyenera kuchitika nyengo yamkuntho yapachaka isanakwane.
Nthawi yotumiza: Dec-15-2022