Dry Type Transformer Temperature Rise Explained

Covqhuav -hom transformerkub nce -C- nce - yog ib qho ntawm nws cov ntsiab lus tseem ceeb tshaj plaws. Nws qhia txog qhov tso cai ua ntej overheating tshwm sim thiab qhia tau hais tias npaum li cas ntawm chav tsev tshwj xeeb. Raws li koj yuav kawm hauv qab no, cov neeg yuav khoom xaiv hom hloov pauv no yuav tsum nkag siab qhov ntsuas no thiab nws qhov cuam tshuam rau lub cuab yeej lub neej. Cia peb pib nrog nws txhais.

 

Transformer Temperature Rise yog dab tsi?

Lub transformer kub nce yog qhov kev hloov uas nws muaj tshaj qhov siab tshaj plaws ambient kub thaum nws ua hauj lwm ntawm tag nrho los yog nameplate load. Koj tuaj yeem pom qhov kev qhia tshwj xeeb no tau qhia hauv cov khoom cov ntaub ntawv.

 

Thaum nyob rau hauv load, lub windings thiab core tsim tshav kub vim muaj ntau yam poob. Cov cua sov yuav tsum tsis pub tshaj qhov txwv. Yog tias ua tau, cov rwb thaiv tsev yuav tawg, ua rau muaj kev txhaum.

 

Yog li ntawd, cov neeg siv yuav tsum to taub tag nrho cov rated nce ntawm lawv transformers thiab yuav ua li cas nws cuam tshuam rau lub neej ntawm cov cuab yeej. Qhov kev ntsuam xyuas no kuj txawv ntawm hom transformer. Qhov kev pom no tsuas yog tsom mus rau qhov qhuav transformers.

 

Qhuav hom Transformer Kub nce

Qhov ntsuas qhuav -hom transformer kub nce yog qhov xav tau nce thaum lub sijhawm ua haujlwm. Qhov nce yog nyob ntawm qhov ua tau zoo ntawm windings 'cov khoom siv insulating. Yog li ntawd, cov rwb thaiv tsev tau muab faib ua ntau pawg thiab muaj npe siv cov tsiaj ntawv ntawm cov tsiaj ntawv.

Txhua hom rwb thaiv tsev lossis chav kawm sawv cev rau qhov ntsuas qhov ntsuas kub uas tuaj yeem ua kom muaj kev nyab xeeb.

 

Peb ntawm cov chav kawm siv feem ntau yog E, F, thiab H. Cia saib seb txhua qhov txhais tau li cas txog qhov ntsuas kub.

• Class E rwb thaiv tsev -tsawg dua 75k ntawm 120 degrees Celsius
• Class F rwb thaiv tsev -tsawg dua 100k ntawm 155 degrees Celsius
• Class H rwb thaiv tsev -Tsawg dua 125k ntawm 180 degrees Celsius

Lwm chav kawm muaj xws li A, B, thiab C. Txawm li cas los xij, cov no tsis yog ib qho rau huab cua -cooled transformer windings. Hauv seem tom ntej no, peb yuav pom yuav ua li cas siv C- ntsuas los txiav txim siab qhov kev txwv cua sov.

 

 

Dry Type Transformer Kub Rise Ratings

Cov khoom siv no siv cov huab cua ntuj lossis yuam kom txias, uas ua rau lawv txawv ntawm cov kua - txias lossis roj hom. Lawv feem ntau tsim nyob rau hauv peb qhov kev ntsuas tseem ceeb nyob ntawm chav kawm rwb thaiv tsev: 80 degree, 115 degree, thiab 120 degree.

Cov kev ntsuas saum toj no tau teev tseg siv 40℃qhov siab tshaj plaws ambient kub. Thaum xam qhov tso cai txwv rau winding kub, ntxiv qhov tshwj xeeb C- nce qhov ntsuas rau qhov ntsuas kub no.

 

Nov yog qhov uas txhais tau tias:

• Ib qho chaw qhuav lossis huab cua- chav tsev txias tau ntsuas 80℃thaum nyob rau hauv tag nrho cov load ua haujlwm ntawm 120℃(40+80).
• Hom 115 degree, ntawm qhov tod tes, ua haujlwm ntawm 155 degree
• Ntawm qhov ntsuas 150 degree, qhov nruab nrab kub yog 190 degree

Lub rwb thaiv tsev siv nyob rau hauv feem ntau qhuav transformers muaj ib tug 220℃ntsuam xyuas, uas txhais tau hais tias cov windings tseem muaj ib tug ntsuas los yog nyiaj tso cai ua ntej lub tshav kub yuav mus txog rau theem tsis zoo. Raws li koj tuaj yeem pom, qhov qis dua C- nce muab qhov dav dav.

 

 

Qhov ntsuas kub nce siab cuam tshuam li cas rau qhuav Transformers?

Ib qho kev nce siab tshaj qhov qhuav transformer lub ambient txwv profoundly cuam tshuam nws kev ua tau zoo thiab lifespan. Xws li, cov neeg siv yuav tsum nkag siab tias qhov ntsuas siab lossis qis txhais tau li cas rau lawv cov cuab yeej- thiab cov kab hluav taws xob feem ntau.

 

Qib Efficiency

Cov qib kev ua tau zoo nyob ntawm qhov C- nce qib. Tus nqi siab dua txhais tau tias nws ua kom muaj cua sov ntau dhau. Nws kuj txhais tau tias qhov nyiaj me me rau kev thauj khoom ntau dhau. Raws li qhov tseeb no, tus nqi qis dua qhia tau hais tias muaj txiaj ntsig zoo dua thiab rov ua dua.

 

Tshaj peev xwm

Ntawm qhov ntsuas qis, nws muaj peev xwm ntau dua. Cia peb ua ib qho 80℃rated hom ua piv txwv. Wb kuj xav tias 220℃rwb thaiv tsev. Ntawm qhov ntsuas no, chav tsev muaj peev xwm 70℃ua ntej nws tuaj yeem ncav cuag nws qhov siab tshaj plaws. Ntawm qhov tod tes, chav tsev 115℃tsuas yog muaj peev xwm 40 degree.

 

Kev thov ib puag ncig

Vim cov chav nyob nrog qis C- cov qhab nia ua kom muaj cua sov tsawg, lawv muaj peev xwm muaj kev nyab xeeb dua. Cov cuab yeej no ua rau lawv siv tau rau hauv qhov chaw kaw nrog qhov tsis muaj qhov cua, xws li chav hluav taws xob, cov vaults hauv av, thiab lwm qhov chaw sab hauv. Siab dua - hom ntaus nqi feem ntau haum rau kev siv sab nraum zoov.

 

Kwv yees Lifespan

Thaum tshav kub kub yog ib qho tseem ceeb ua rau kev puas tsuaj thiab ua rau kev laus sai. Nws feem ntau tshwm sim los ntawm cov cua kub ntau ua rau cov rwb thaiv tsev thiab ua rau hluav taws xob tsis zoo xws li luv luv Circuit Court. Yog tias cov windings khiav ntawm qhov kub qis, cov rwb thaiv tsev thiab lwm yam khoom siv tau ntev, feem ntau kwv yees li ntawm 20 xyoo lossis ntev dua.

 

Qhuav hom Transformer Overheating

Overheating txhais tau hais tias qhov kub thiab txias ntau tshaj qhov uas lub cuab yeej siv tau lossis zam tau. Qhov teeb meem no tuaj yeem muaj ntau yam ua rau ua rau muaj kev laus. Cov laj thawj tau muab faib ua sab hauv thiab sab nraud, raws li tau piav qhia hauv qab no.

 

Ua rau sab hauv

Core thiab winding poob xws li hysteresis thiab Eddy tam sim no poob

Rwb thaiv tsev puas los ntawm kev laus los yog lwm yam ua rau

Siab winding kuj tshwm sim los ntawm hom khoom thiab loj

Tsis zoo kais changer hu vim av, tsis muaj zog caij nplooj ntoos hlav, thiab lwm yam.

 

Ua rau sab nraud

Cov cua txias tsis ua haujlwm, suav nrog cov kiv cua tsis tuaj yeem ua haujlwm

Qhov cua tsis txaus nyob rau hauv chav tsev installation

 

 

Dry Type Transformer Temperature Monitoring

Cov cua kub ntau dhau ua rau cov rwb thaiv tsev, tshwj xeeb tshaj yog tias tau ntsib ntau lub sijhawm ntev. Cov neeg siv yuav tsum siv cov thev naus laus zis saib xyuas kom nkag siab, sib txuas lus, lossis tswj hwm kom tiv thaiv qhov ntawd. Cov kev saib xyuas tuaj yeem muaj ntau hom.

 

Lawv suav nrog:

• Mechanical dials lossis gauges
• Hluav taws xob ntsuas kub ntsuas cov cuab yeej thiab cov tswj

 

Cov tshuab no siv cov ntsuas cua sov ua haujlwm, nrog rau qee qhov muab ntau yam ntau dua li lwm tus. Piv txwv li, ib lub tshuab hluav taws xob muaj kev soj ntsuam xyuas kom pom cov cua sov ntau dhau lossis kub kub.

 

Cov maub los no tuaj yeem teeb lub tswb lossis pib kiv cua txias. Tus maub los cuam tshuam cov khoom siv yog tias qib siab tshaj qhov txwv kom tsis txhob muaj xwm txheej.

 

Ntxiv nrog rau kev siv cov cuab yeej saib xyuas, cov neeg siv yuav tsum tau kuaj xyuas lub cev tsis tu ncua thiab lwm yam kev saib xyuas kev saib xyuas, suav nrog kev ntsuas qhov kub thiab txias, txhawm rau xyuas kom lub tsev noj qab haus huv tag nrho.

 

Xaus

Qhov qhuav -hom transformer kub nce qhov ntsuas yog qhov tseem ceeb uas cov neeg yuav khoom yuav tsum xav txog thaum ntsuas lub cuab yeej. Nyob ntawm qhov system loads, qhov ntsuas yuav qis lossis siab. Kev ntsuas qis dua txhais tau hais tias qhov nyiaj tau los tseem ceeb dua rau kev nce ntxiv, tso cai rau qee zaus overloads. Ntxiv nrog rau qhov kev ntsuas no, kev saib xyuas kom raug yog qhov tseem ceeb los txuas rau lub tshuab hluav taws xob lub neej.

 

Thov Ib Daim Quote

 

Tsis paub meej txog qhov yuav tsum tau muaj peev xwm/voltage ntawm qhuav -hom transformer rau koj qhov project? Xa koj cov kev cai thauj khoom thiab chaw teeb tsa, thiab GNEE engineers yuav muab ib qhodawb txoj kev npaj xaiv raugkom tsis txhob raug nqi pov tseg los ntawm kev xaiv tsis raug!

 

Dab tsi yog qhov ntsuas kVA ntawm lub tshuab ziab khaub ncaws qhuav?

Qhuav- hom transformer, suav nrog ib qho uas tau muab tso rau hauv lwm yam khoom, uas cov tub ntxhais thiab cov windings yog nyob rau hauv ib tug gaseous los yog qhuav compound insulating nruab nrab thiab hais tias: yog ib theem nrog lub nominal zog ntawm15 rau 833 kVA, lossis peb -theem nrog lub zog nominal ntawm 15 txog 7500 kVA.

 

Cov chav kawm dab tsi yog qhov qhuav hom transformer?

Tam sim no qhuav- hom transformers siv Nqus Siab Impregnated (VPI), Nqus Siab Encapsulated (VPE), los yog cam khwb cia- coil rwb thaiv tsev systems, feem ntau rated rauChav Kawm R (220 degree) lossis Chav H (180 degree)kev ua haujlwm.

 

Dab tsi yog qhov bil ntsuam xyuas rau ib hom qhuav transformer?

Raws li pom nyob rau hauv Table 1, ib tug qhuav- hom transformer muaj tus qauv ntsuas BIL ntawm4 5kvrau 8.7kV chav kawm windings. Qhov no yog qhov tsawg dua li BIL theem ntawm cov kua dej - puv transformers, yog li kev siv cov surge arresters muaj ntau heev nyob rau hauv thaum ntxov xyoo.

 

Lub peev xwm siab tshaj plaws ntawm lub tshuab ziab khaub ncaws yog dab tsi?

Kev lig kev cai, qhuav- hom transformers yog siv rau kev faib khoom thiab kev lag luam kev lag luam nrog cov nqi zog thiab qhov hluav taws xob tsis siab tshaj 15 MVA thiab 36 kV. Hitachi Zog tam sim no tseem muaj qhuav- hom transformers rau 52 kV thiab 72.5 kV voltage chav kawm nrog lub zog ntsuas txog li63 MVA.