Ungawulinganisa njani ubushushu beoyile yetransformer?

Ubomi benkonzo yetransformer buxhomekeke kubushushu bayo obujikelezayo, obudlala indima ebalulekileyo kwizinto zokukhusela. Xa ubushushu bokukhusela betransformer winding bukwiqondo lobushushu beoyile yetransformer eliyi -80 ukuya kwi-130 °C, izinga lokuguga kwe-insulation liza kuphindaphindeka kabini kulo lonke ubushushu obuyi-6 °C, oko kukuthi, ubomi be-insulation buya kuncitshiswa nge-1/2, "umthetho weedigri ezintandathu" zokuguga kwe-insulation.

Ngexesha lokusebenza kwe-transformer, ngokubanzi kuchazwe ukuba i-85°C ngumda wobushushu beoyile ephezulu. Kwindawo yaseDongying, xa ubushushu beoyile ephezulu bufikelela ngaphezulu kwe-80°C, isignali yesilumkiso esithi "XX main transformer body oil temperature alarm high" kunye "XX main transformer body oil temperature" ziya kukhutshwa. isilumkiso esiphezulu".

Ubushushu bee-transformers ezintywilisiweyo kwi-oyile, zombini i-transformer oil kunye ne-winding, bunokulinganiswa kusetyenziswa i-temperature gauge efakwe kwi-transformer oil ephezulu kwi-casing. Oku kuvumela ukujonga ubushushu be-transformer iyonke. Njengoko ii-transformer windings zinokuvelisa ubushushu obugqithisileyo ngexesha lokusebenza, zihlala zinobushushu obuphezulu kune-oyile. Indawo eshushu kakhulu ngaphakathi kwi-transformer, eyaziwa ngokuba yi-hot spot temperature, yinto ephambili ekuqikeleleni ukuguga kwe-insulation. Le ndawo ishushu idla ngokuba kufutshane neziphelo zee-windings kodwa kunzima ukuyilinganisa ngokuchanekileyo. Ukujonga obu bushushu bangaphakathi, kusetyenziswa i-transformer winding temperature indicator endaweni yoko. Ke ngoko, uninzi lwee-transformers ezintywilisiweyo kwi-oyile zixhotyiswe nge-oyile ephezulu kunye ne-winding temperature gauge.

Isalathisi esimnyama kwi-thermometer sibonisa ubushushu bokwenyani bokusebenza, kwaye isalathisi esibomvu sibonisa ubushushu be-alamu obumiselweyo obuphezulu. Xa ubushushu beoyile yomaleko ophezulu we-transformer budlula eli xabiso, iya kulumkisa, izikhokelo ezimbini ziyangqubana ukuze zenze umbane uqhube, kwaye isignali yesilumkiso iya kukhutshwa, kwaye kukho ukuvela kwinaliti ebomvu. Xa ubushushu beoyile budlula ubushushu obuphezulu ngexesha lokusebenza, isalathisi esimnyama siya kuqhuba inaliti ebomvu. Isalathisi siyajikeleza, ngeli xesha inaliti ebomvu ibonisa ubushushu obuphezulu obufikelelweyo ngexesha lokusebenza.

Ubushushu obujikajikayo kwi-transformer bunokuthathwa njengokubekwa kobushushu beoyile yomaleko ophezulu we-transformer kunye nokunyuka kobushushu bokujikajika kwioyile. Ngokubanzi, umsinga womthwalo we-transformer wongezwa ngokusekelwe kwinkqubo yokulinganisa ubushushu beoyile ye-transformer, kwaye ukunyuka kobushushu bokujikajika kwioyile kulinganiswa ngendlela yokulinganisa ubushushu, ukuze ekugqibeleni kufumaneke isalathisi sobushushu bokujikajika kwe-transformer. Umzobo wesicwangciso sendlela ethile yokuphumeza uboniswe kumfanekiso olandelayo.

Ubushushu bokujika kwe-transformer entywilisiweyo ngeoyile Tw bunokulingana noku:

Tw=T0+k*△Zimbini

Kwifomyula, i-T0 bubushushu beoyile yomaleko ophezulu we-transformer, △Isibini ngumahluko wobushushu beoyile yobhedu, ofunyenwe ngokulinganisa ubushushu, i-k yi-thermal coefficient, enxulumene nomthamo we-transformer, isakhiwo se-winding, njl. Ukunyuka kobushushu be-winding ukuya kwioyile △Isibini sixhomekeke ekuhambeni kwe-winding. ukudlula komsinga.

Inkqubo yokulinganisa yenziwe ikakhulu yiphakheji yokuva ubushushu, isekethe yokuva ubushushu ejikelezayo yetransformer, kunye nesensor. Phakathi kwazo, isekethe yokuva ubushushu kunye nesensor yobushushu ejikelezayo yetransformer zonke zikwiphakheji yokuva ubushushu, kwaye iphakheji yokuva ubushushu intywiliselwa kwioyile ephezulu yetransformer ukuze ive ubushushu beoyile ephezulu. Isensor inamacandelo amabini: isensor yobushushu eqhagamshelwe kubushushu obujikelezayo kwindawo ekuyo kwimitha yomatshini yetransformer, ixabiso lobushushu eliqokelelweyo libonakala kufundo lwepleyiti yesalathisi sobushushu; ukumelana nobushushu bePt100, apho ixabiso lokumelana litshintsha ngotshintsho lobushushu, ixabiso lobushushu eliqokelelweyo lisetyenziselwa ukuthumela inkqubo yokujonga imvelaphi yekhompyutha.

Ulwazi lobushushu beoyile ludluliselwa kwiziko lokuhambisa ngokusebenzisa indlela yoqhagamshelo eboniswe kumfanekiso ongezantsi ukuze kujongwe ubushushu beoyile ephezulu kunye nobushushu obujikelezayo ngexesha langempela.

1. Ungagweba njani ukuba utshintsho lobushushu lwe-transformer luqhelekile okanye aluqhelekanga?

Ngelixa i-transformer isebenza, ukulahleka kwamandla kumbindi wentsimbi kunye nee-windings kuguqulwa kube bubushushu. Oku kubangela ukunyuka kobushushu kwiindawo ezahlukeneyo ze-transformer, ethi emva koko itshabalale ngemitha kunye nokuqhuba. Nje ukuba kufikelelwe kumlinganiselo phakathi kokuveliswa kobushushu kunye nokusasazeka, ubushushu buyazinza kwicandelo ngalinye. Ubungakanani bokulahleka kwentsimbi buhlala bufana ngelixa ukulahleka kobhedu kuyahluka ngokuxhomekeke kumthwalo. Ukuvavanya ukusebenza kwe-transformer, qaphela ubushushu bangaphandle, ubushushu beoyile ephezulu, umthwalo, kunye nokuphakama kwenqanaba leoyile ngexesha lokuhlolwa. La maxabiso anokuthelekiswa nokufundwa kwangaphambili ukuze kuqinisekiswe ukuba i-transformer isebenza ngokufanelekileyo na.

Ukuba ubushushu beoyile bungaphezulu kwe-10°C xa kuthelekiswa nobesiqhelo kwiimeko ezifanayo, okanye ukuba ubushushu buyaqhubeka nokunyuka ngaphandle kokutshintsha komthwalo kwaye isixhobo sokupholisa sisebenza ngokuchanekileyo, oku kubonisa ingxaki yangaphakathi kwi-transformer. Kubalulekile ukujonga naziphi na iimpazamo okanye ukusilela kwi-thermometer. Ubushushu obuphambili bee-transformers ezininzi (ezaziwa ngokuba yi-Class A insulation) benziwe ngephepha kwaye bunokumelana nobushushu obufikelela kwi-105°C. Ngokwesiqhelo, ubushushu obujikelezayo buya kuba yi-10-15°C ngaphezulu kobushushu bomphezulu weoyile. Umzekelo, ukuba umphezulu weoyile ulingana ne-85°C, lindela ubushushu obujikelezayo obuphakathi kwe-95-100°C.

2. Izizathu zobushushu obungaqhelekanga betransformer

① Ubushushu obungaqhelekanga obubangelwa yimpazamo yangaphakathi

Ukuba i-transformer ifumana iimpazamo zangaphakathi, ezifana neesekethe ezimfutshane eziphakathi okanye eziphakathi, kunokubakho iingxaki ezininzi. Ikhoyili iya kuphuma iye kwindawo ebiyelweyo, ibangele ukufudumeza kwiindawo zangaphakathi ze-lead. Ukongeza, ukugutyungelwa kwesiseko sentsimbi ngamanqaku amaninzi kunokunyusa imisinga ye-eddy kwaye kubangele ubushushu obugqithisileyo. Kwezinye iimeko, ukuvuza kwamanzi kunokwenza iluphu netanki yeoyile yentsimbi kwaye kubangele ukwakheka kobushushu. Ukuba kukho ezinye izinto ezibangela ubushushu obungaqhelekanga kwi-transformer, ukhuseleko lwegesi okanye umahluko lunokusebenza. Kwiimeko ezinzima, ioyile inokufuneka ifakwe kumbhobho ongenakuqhushumba okanye ivalvu yokunciphisa uxinzelelo. Kule meko, kuyacetyiswa ukuba uyeke kwaye uhlole i-transformer.

②Ubushushu obungaqhelekanga obubangelwa kukusebenza okungaqhelekanga kwe-cooler

Ubushushu obungaqhelekanga obubangelwa kukusebenza okungaqhelekanga okanye ukungasebenzi kakuhle kwe-cooler, okufana nokucima kwepompo engaphantsi komhlaba, ifeni eyonakeleyo, ukungcoliswa kwemibhobho yokupholisa, ukusebenza kakubi kokupholisa, kunye nokungasebenzi kakuhle kwevalvu yeradiator ukuvula. Inkqubo yokupholisa kufuneka igcinwe kwaye ihlanjwe ngexesha okanye kufuneka kufakwe i-cooler yokuxhasa, kungenjalo umthwalo we-transformer kufuneka ulungiswe.

③ Ukuba isalathisi sobushushu sineempazamo okanye isalathisi asiphumelelanga, kufuneka itshintshwe i-thermometer.