Zomwe zimachitika chifukwa cha netiweki yaifupi ya ng'anjo zazikulu ndi zapakati zomira pansi pamadzi zimatengera pafupifupi 70% ya momwe ng'anjoyo imagwirira ntchito.The kumizidwa arc ng'anjo lalifupi maukonde limatanthawuza mawu ambiri kwa mitundu yosiyanasiyana ya otsika kuthamanga ndi mkulu panopa kondakitala magetsi kuchokera otsika gulu kotulukira kumapeto kwa ng'anjo magetsi thiransifoma kuti siteji ya magetsi.Ngakhale kutalika kwa ukonde waufupi wa ng'anjo yomizidwa pansi pamadzi siukulu, zotchingira zazifupi ndi ma reactance zimakhudza kwambiri zida za ng'anjo ya arc yomizidwa.Chifukwa cha kapangidwe kake kovutirapo, mphamvu yomwe imadutsamo imafikira mazana masauzande a ma amperes.Chifukwa kuchuluka kwa mayendedwe afupikitsa nthawi zambiri kumakhala 3 mpaka 6 kuposa kwa chopinga, mawonekedwe afupikitsa amadzimadzi amadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzimadzi okha, komanso kumapangitsanso mphamvu ya ng'anjo yomira pansi pa madzi.
The wamba Buku chipukuta misozi njira ndi kulumikiza mndandanda compensation capacitor banki ndi basi high-voltage mbali yaikulu ya kumizidwa arc ng'anjo thiransifoma, ndiko kuti, mkulu-voltage chipukuta misozi.Popeza kuti chipukuta misozi chingathe kupindula ndi mzere usanafike malo olowera ndi gululi yamagetsi yamagetsi, magetsi amatha kukwaniritsa zofunikira zokhudzana ndi mphamvu ya mzere wa katundu, koma sangathe kulipira ma windings a thiransifoma. , maukonde amfupi, ndi ma electrode a ng'anjo ya mgodi.Mphamvu yogwira ntchito yamagulu onse achiwiri otsika-voltage ndi apamwamba-panopa, ndiko kuti, zipangizo sizingapindule ndi kuwonjezeka kwa kupanga zinthu za ng'anjo ya migodi ndi kuchepetsa kugwiritsira ntchito mphamvu ndi kugwiritsa ntchito migodi.
Nthawi zambiri, kuyika njira zoyeserera za harmonic komanso zoyeserera zokhazikika zitha kuphatikizidwa kuti zikhale zotsika mtengo.Kwa katundu wamtundu wa harmonic wokhala ndi mphamvu zazikulu (monga ng'anjo zafupipafupi, ma inverters, ndi zina zotero), zotsutsana ndi ma harmonic zitha kugwiritsidwa ntchito poyikira njira zotsutsana ndi ma harmonic , kuchepetsa mphamvu yamagetsi yomwe imalowetsedwa mu gululi.Mphamvu zazing'ono ndi katundu wobalalika wopanda mzere zitha kuyendetsedwa mofanana pa basi.Hongyan APF yogwira fyuluta angagwiritsidwe ntchito, ndi ulamuliro harmonic angagwiritsidwe ntchito.
Ng'anjo ya arc yomwe ili pansi pamadzi ndi ng'anjo yotentha kwambiri yamagetsi yokhala ndi mawonekedwe a ng'anjo yamagetsi ya resistor.Mphamvu yamagetsi imatsimikiziridwa ndi arc ndi kukana R mu ng'anjo ndi mtengo wa kukana R ndi reactance X mu dera lamagetsi (kuphatikizapo ma transformers, maukonde afupikitsa, mphete zosonkhanitsa, nsagwada za conductive ndi electrode).
cosφ=(r #+r)/resistance x mtengo wa resistor r nthawi zambiri sisintha pamene ng'anjo yomira pansi pamadzi ikugwira ntchito, zimatengera kapangidwe kake ndi kukhazikitsa kwa netiweki yaifupi ndi masanjidwe a magawo amagetsi.Kukaniza R kumagwirizana ndi mphamvu yamakono ya zigawo zachidule za kumtunda kwamtunda panthawi ya ntchito, ndipo kusintha sikuli kwakukulu, koma kukana R ndi chinthu chofunika kwambiri pozindikira mphamvu ya ng'anjo ya arc yomwe ili pansi pamadzi panthawi ya ntchito. .
Popeza ng'anjo ya arc yomwe ili pansi pamadzi imakhala ndi kukana kofooka kuposa ng'anjo zina zosungunulira magetsi, mphamvu yake imachepetsedwanso moyenera.Kuphatikiza pa mphamvu yachilengedwe ya ng'anjo ya ng'anjo yaing'ono yomwe ikufika pamwamba pa 0.9, mphamvu yachilengedwe ya ng'anjo yayikulu ya mgodi yomwe imatha kupitilira 10000KVA ili pansi pa 0.9, ndipo mphamvu ya ng'anjo ya mgodi ikakulirakulira, mphamvu zake zimachepa. chinthu.Ichi ndi chifukwa chachikulu inductive katundu wa kumizidwa arc ng'anjo thiransifoma mu danga lalikulu, yaitali maukonde lalifupi, ndi zolemera zinyalala anaikapo mu ng'anjo, amene kumawonjezera anachita za maukonde lalifupi, potero kuchepetsa mphamvu chinthu. wa ng'anjo ya arc yomizidwa.
Pofuna kuchepetsa kugwiritsa ntchito gridi yamagetsi ndikuwongolera njira yopangira magetsi, bungwe la Power Supply Bureau likunena kuti mphamvu ya kampani yamagetsi iyenera kukhala pafupifupi 0.9, apo ayi kampani yamagetsi idzalangidwa ndi zilango zazikulu.Kuphatikiza apo, mphamvu yocheperako idzachepetsanso mphamvu yamagetsi yomwe ikubwera ya ng'anjo ya arc yomira, zomwe zingawononge smelter ya calcium carbide.Chifukwa chake, pakadali pano, ng'anjo zazikulu zomizidwa m'madzi kunyumba ndi kunja zikuyenera kukhazikitsa zida zolipirira mphamvu zowongolera mphamvu zama ng'anjo omira pansi pamadzi.
Malipiro a sefa yamagetsi otsika
1. Mfundo yofunika
Low-voltage compensation ndi chipangizo chosagwira ntchito cholipirira chomwe chimagwiritsa ntchito ukadaulo wamakono wowongolera ndi ukadaulo wapaintaneti waufupi kuti ulumikizane ndi mphamvu zazikulu, zotsika kwambiri zamagetsi otsika kwambiri ku mbali yachiwiri ya ng'anjo yamigodi.Chipangizochi sichimangokhala chochita bwino kwambiri cha mfundo ya kubwezeredwa kwa mphamvu yogwira ntchito, komanso chikhoza kupanga mphamvu ya ng'anjo ya mgodi pamtengo wapamwamba, kuchepetsa mphamvu yogwiritsira ntchito mphamvu yafupikitsa ndi mbali yoyamba, ndikuchotsa chachitatu, chachisanu ndi chachisanu ndi chiwiri harmonics.Yerekezerani mphamvu yotulutsa magawo atatu kuti muwonjezere mphamvu ya chosinthira.Cholinga chaulamuliro ndikuchepetsa kuchuluka kwa mphamvu zamagawo atatu ndikukwaniritsa mphamvu zofanana ndi magawo atatu.Wonjezerani mphika wothirira, sungani kutentha, onjezerani kutentha kwa ng'anjo, ndikufulumizitsa zomwe zikuchitika, kuti mukwaniritse cholinga chokweza khalidwe la mankhwala, kuchepetsa kugwiritsira ntchito, ndi kuonjezera kupanga.
Ukadaulowu umagwiritsa ntchito ukadaulo wamba wokhwima pamalowo ku mbali yachiwiri yotsika kwambiri ya ng'anjo yamigodi.Mphamvu yogwira ntchito yopangidwa ndi capacitor imadutsa pamzere waufupi, womwe mbali yake imatengedwa ndi thiransifoma ya ng'anjo ya mgodi kuchokera ku dongosolo, ndipo gawo lina limalipiritsa mphamvu yogwira ntchito ya thiransifoma ya ng'anjo, maukonde amfupi ndi maelekitirodi.Kutaya mphamvu kumawonjezera mphamvu yogwira ntchito mu ng'anjo.Pa nthawi yomweyo, gawo-olekanitsidwa chipukuta misozi anatengera kuti mphamvu yogwira pa maelekitirodi atatu gawo la kumizidwa arc ng'anjo yofanana, kuti apititse patsogolo mphamvu chinthu, kuchepetsa kusagwirizana kwa magawo atatu mphamvu, ndi kusintha kupanga. index.
2. Kugwiritsa ntchito chipukuta misozi chochepa
M'zaka zaposachedwa, chifukwa cha kusintha kwapang'onopang'ono kwa teknoloji yochepetsera magetsi otsika, ndondomeko ya mapangidwe yakhala yowonjezereka, ndipo voliyumu yachepetsedwa kwambiri.Opanga ng'anjo yamadzi a arc aphunziranso za momwe amagwirira ntchito pakuwongolera phindu lazachuma la ng'anjo zomira pansi pamadzi.Zida zolipirira ma voltage otsika zakhala zikugwiritsidwa ntchito kwambiri mu Submerged arc ng'anjo yamoto.
Mayankho omwe mungasankhe:
plan 1
Gwiritsani ntchito chipukuta misozi chamagetsi okwera kwambiri (chiwonetserochi ndi chipukuta misozi chofala, koma zotsatira zake sizikukwaniritsa zofunikira).
Nkhani 2
Kumbali ya low-voltage, mphamvu ya magawo atatu a magawo atatu amalipiro amalipiro amatengedwa.Pambuyo pa chipangizo cha fyuluta chikugwiritsidwa ntchito, mphamvu yogwira ntchito pamagetsi a magawo atatu a ng'anjo ya arc imafanana, kuti apititse patsogolo mphamvu yamagetsi, kuchepetsa kusagwirizana kwa mphamvu ya magawo atatu, ndikuwongolera ndondomeko ya kupanga.
Nthawi yotumiza: Apr-13-2023