ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Ulimi
ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
I-Transformer iyisisetshenziswa esibalulekile esiyinhloko ohlelweni lwamandla, futhi ukwethembeka kwayo kokusebenza kunobudlelwane obuhle nokusebenza okuphephile nokuthembekile kwesistimu yamandla. Ngokwezibalo ezifanele, isilinganiso sezinga lezingozi ze-transformer engu-110kV nangaphezulu licishe libe ngu-0.69%, phakathi kwalo, ngenxa yokusebenza ngokweqile kwama-winding, i-insulation isikhulile, ukuvala ukuvala kuphukile, kanye nengozi yokushiswa kwe-transformer. ibalwa ngenani elikhulu. Ukuvikelwa kwegesi esindayo ekuvikelweni okungewona ugesi we-transformer empeleni kubonisa ngokungaqondile izinga lokushisa elingavamile le-transformer.
Kuyabonakala ukuthi ukukalwa kwezinga lokushisa kwe-transformer kubaluleke kakhulu ekuxwayiseni kusenesikhathi kanye nesenzo esifike ngesikhathi sezingozi ze-transformer.
Impilo yesevisi ye-transformer incike ekushiseni kwayo okugoqayo, okudlala indima ewujuqu ku-insulating material. Lapho izinga lokushisa lokufakelwa kwe-transformer mawinding lingaphakathiIbanga lokushisa likawoyela we-transformer kusuka ku-80 kuya ku-130 ° C, izinga lokuguga lokuguga lizophindeka kabili kukho konke ukukhuphuka kwezinga lokushisa elingu-6 °C, okungukuthi, impilo yokushisa izoncishiswa ngo-1/2, "okungumthetho wama-degree ayisithupha" wokuguga.
Ngesikhathi sokusebenza kwe-transformer, ngokuvamile kushiwo ukuthi u-85 ° C umkhawulo wezinga lokushisa eliphezulu likawoyela. Endaweni ye-Dongying, lapho izinga lokushisa eliphezulu likawoyela lifinyelela ngaphezu kuka-80°C, kuzokhishwa isiginali ye-alamu ethi "XX main transformer body temperature high alarm" kanye "nokushisa kukawoyela oyisiguquli esikhulu se-XX" kuzokhishwa. isexwayiso esiphezulu".
Izinga lokushisa lama-transformer acwiliswe ngamafutha, kokubili uwoyela we-transformer kanye nama-winding, lingalinganiswa kusetshenziswa igeji yokushisa efakwe kuwoyela we-transformer phezulu kwe-casing. Lokhu kuvumela ukuqapha izinga lokushisa jikelele le-transformer. Njengoba ama-windings e-transformer angakhiqiza ukushisa okweqile ngesikhathi sokusebenza, ngokuvamile anezinga lokushisa eliphakeme kunawoyela. Indawo eshisa kakhulu ngaphakathi kwe-transformer, eyaziwa ngokuthi izinga lokushisa lendawo eshisayo, iyisici esibalulekile ekubikezeleni ukuguga kokuguga. Le ndawo eshisayo ivamise ukuba ngasekugcineni kwama-windings kodwa kunzima ukuyikala ngokunembile. Ukuqapha lokhu kushisa kwangaphakathi, inkomba yokushisa yokuguqula i-transformer ivame ukusetshenziswa esikhundleni salokho. Ngakho-ke, ama-transformer amaningi acwiliswe ngamafutha afakwe kokubili uwoyela ophezulu kanye negeji lokushisa elijikayo.
I-pointer emnyama ku-thermometer ikhombisa izinga lokushisa langempela lokusebenza, futhi i-pointer ebomvu ikhombisa izinga lokushisa le-alamu elibekiwe elibekiwe. Lapho izinga lokushisa likawoyela lesendlalelo esingaphezulu se-transformer lidlula leli nani, lizothusa, izinkomba ezimbili zishayisane ukuze zenze indlela yokuxhumana kagesi, futhi isignali ye-alamu izokhishwa, futhi kukhona i-protrusion enaliti ebomvu. Lapho izinga lokushisa lamafutha lidlula izinga lokushisa eliphakeme ngesikhathi sokusebenza, i-pointer emnyama izoshayela inaliti ebomvu. I-pointer ijikeleza, ngalesi sikhathi inaliti ebomvu ibonisa izinga lokushisa eliphakeme kakhulu elifinyelelwe ngesikhathi sokusebenza
Iizinga lokushisa lomoya ku-transformeringabhekwa njenge-superposition yokushisa kwamafutha kwesendlalelo esiphezulu se-transformer kanye nokukhuphuka kwezinga lokushisa lokuhamba emafutheni. Ngokuvamile, umthamo wamanje we-transformer wengezwe ngesisekelo sesistimu yokulinganisa izinga lokushisa likawoyela we-transformer, futhi ukukhuphuka kwezinga lokushisa lokuya emafutheni kulingisa indlela yokulinganisa okushisayo, ukuze ekugcineni uthole inkomba yokushisa yokuguqula i-transformer. Umdwebo wohlelo wendlela ethile yokuqalisa uboniswa esithombeni esilandelayo.
Izinga lokushisa elijikayo le-transformer elicwiliswe ngamafutha i-Tw lingalingana noku:
Tw=T0+k*△Okubili
Kufomula, i-T0 izinga lokushisa likawoyela lesendlalelo esiphezulu se-transformer, △Okubili umehluko wezinga lokushisa likawoyela wethusi, elitholwe ngokulingisa okushisayo, u-k yi-coefficient eshisayo, ehlobene nomthamo we-transformer, isakhiwo esimazombezombe, njll. Ukwenyuka kwezinga lokushisa lokujika emafutheni △Okubili kuncike ekugelezeni okumazombezombe. yamanje edlulayo.
Isistimu yokulinganisa ngokuyinhloko yakhiwe iphakheji yokuzwa izinga lokushisa, isekethe yesinxephezelo sokulinganisa izinga lokushisa esinamajika e-transformer, kanye nenzwa. Phakathi kwazo, izinga lokushisa isilinganiso isinxephezelo wesifunda kanyeI-transformer winding lokushisa inzwa zonke zisephaketheni lokuzwa izinga lokushisa, futhi iphakethe lenzwa yezinga lokushisa licwiliswa kumafutha aphezulu we-transformer ukuzwa izinga lokushisa eliphezulu likawoyela. Inzwa iqukethe izingxenye ezimbili: inzwa lokushisa exhunywe ku-site emazombezombe izinga lokushisa in transformer imitha mechanical, eqoqwe izinga lokushisa kubonakala lokushisa inkomba plate ukufundwa; ukumelana nokushisa kwe-Pt100, inani layo lokumelana lishintsha ngokushintsha kwezinga lokushisa, inani lokushisa eliqoqiwe lisetshenziselwa ukuthumela isistimu yokuqapha i-Background yekhompyutha.
Ulwazi lwezinga lokushisa likawoyela ludluliselwa esikhungweni sokuthumela impahla ngokusebenzisa indlela yokuxhuma eboniswe esithombeni esingezansi ukuze kuqashelwe ukuqapha kwesikhathi sangempela kwezinga lokushisa likawoyela eliphezulu kanye nezinga lokushisa elijikajikayo.
1. Indlela yokwahlulela ukuthi ukushintsha kwezinga lokushisa kwe-transformer kuyinto evamile noma engavamile?
Ngenkathi i-transformer isebenza, ukulahleka kwamandla kukho kokubili umgogodla wensimbi nama-windings kuguqulwa kube ukushisa. Lokhu kubangela ukukhuphuka kwezinga lokushisa kuzo zonke izingxenye ezihlukahlukene ze-transformer, ezibe sezihlakazeka ngemisebe kanye nokuqhutshwa. Uma ibhalansi isifinyelelwe phakathi kokukhiqizwa kokushisa nokuchithwa, izinga lokushisa liyazinza engxenyeni ngayinye. Inani lokulahlekelwa kwensimbi lihlala lingaguquki ngenkathi ukulahlekelwa kwethusi kuyahlukahluka kuye ngomthwalo. Ukuze uhlole ukusebenza kwe-transformer, qaphela izinga lokushisa langaphandle, izinga lokushisa eliphezulu likawoyela, umthwalo, nokuphakama kwezinga likawoyela ngesikhathi sokuhlolwa. Lawa manani angafaniswa nokufundwa kwangaphambilini ukuze kunqunywe ukuthi i-transformer isebenza kahle yini.
Uma izinga lokushisa likawoyela lingaphezu kuka-10 ° C uma kuqhathaniswa nokujwayelekile ezimweni ezifanayo, noma uma izinga lokushisa liqhubeka nokukhuphuka ngaphandle kokushintsha komthwalo futhi idivayisi yokupholisa isebenza kahle, lokhu kubonisa inkinga yangaphakathi ne-transformer. Kubalulekile ukuhlola noma yimaphi amaphutha noma ukwehluleka ku-thermometer. I-insulation eyinhloko yama-transformer amaningi (eyaziwa ngokuthi i-Class A insulation) yenziwe ngephepha futhi ingamelana namazinga okushisa afika ku-105°C. Ngokuvamile, izinga lokushisa elijikayo lizoba ngu-10-15 ° C ngaphezu kwezinga lokushisa elingaphezulu lamafutha. Isibonelo, uma indawo kawoyela ilinganisa u-85°C, lindela izinga lokushisa elijikayo phakathi kuka-95-100°C.
2. Izizathu zokushisa okungavamile kwe-transformer
① Izinga lokushisa elingavamile elibangelwa iphutha langaphakathi
Uma i-transformer ihlangabezana namaphutha angaphakathi, njengama-inter-turn noma ama-inter-layer short circuits, izinkinga ezimbalwa zingenzeka. Ikhoyili izophumela endaweni ebiyelwe, ibangele ukushisa emajoyini omthofu angaphakathi. Ukwengeza, i-iron core's multi-point grounding ingakhuphula imisinga ye-eddy futhi ibangele ukushisa ngokweqile. Kwezinye izimo, ukuvuza okuvuzayo kungase kwakheke iluphu nethangi likawoyela wensimbi futhi kubangele ukunqwabelana kokushisa. Uma noma yiziphi ezinye izici ezibangela ukushisa okungavamile ku-transformer, igesi noma ukuvikelwa okuhlukile kungase kusebenze. Ezimweni ezimbi kakhulu, uwoyela ungase udinge ukuthi ujovwe epayipini elingaqhumi noma ivalvu yokukhulula ukucindezela. Kulesi simo, kunconywa ukuthi ume futhi uhlole i-transformer.
②Izinga lokushisa elingavamile elibangelwa ukusebenza okungavamile kwesipholile
Izinga lokushisa elingavamile elibangelwa ukusebenza okungavamile noma ukwehluleka kwesipholile, njengokucisha kwephampu engaphansi kwamanzi, isiphephetha-moya esilimele, ukungcoliswa kwamapayipi okupholisa, ukungasebenzi kahle kokupholisa, nokuhluleka kwe-valve ye-radiator ukuvula. Isistimu yokupholisa kufanele igcinwe futhi igezwe ngesikhathi noma i-cooler yokugcina kufanele ifakwe, ngaphandle kwalokho umthwalo we-transformer kufanele ulungiswe.
③ Uma inkomba yezinga lokushisa inamaphutha noma inkomba ihluleka, i-thermometer kufanele ishintshwe.
