Covkub nce ntawm qhuav -hom transformeryog ib qho ntawm cov lus qhia uas tuaj yeem saib yooj yim ntawm daim ntawv teev cov ntaub ntawv tab sis qhov tseeb qhia koj ntau heev txog yuav ua li cas lub transformer yuav ua tau zoo hauv kev ua haujlwm tiag tiag.

Thaum twg lub transformer yog energized, nws ua cua sov. Qee qhov los ntawm cov tub ntxhais sib nqus, thaum tshav kub ntau feem ntau yog tsim nyob rau hauv windings thaum lub load nce. Qhov kub ntawd tau tawm mus. Yog tias nws nyob twj ywm hauv qhov hloov pauv, qhov kub thiab txias nce, rwb thaiv tsev hnub nyoog sai dua, thiab kev ntseeg siab tuaj yeem raug kev txom nyem thaum lub sijhawm.

Hauv cov ntsiab lus tseem ceeb:

Kub nce=Transformer kub − Ambient kub

Yog li, yog tias huab cua nyob ib puag ncig yog 40℃thiab qhov nruab nrab cua kub nce mus txog 140 degree, qhov cua kub nce yog 100 K.

Qhuav- hom transformers yog txias los ntawmcua estshaj insulating roj. Uas ua rau airflow, qhov cua, winding siv, rwb thaiv tsev cov ntaub ntawv, thiab cua txias ducts tshwj xeeb tshaj yog tseem ceeb. Nyob rau hauv kev xyaum, lub transformer nws tus kheej thiab chav nyob qhov twg nws yog ntsia yuav tsum tau muab xam raws li ib tug thermal system.

Dab tsi ua rau kub nce hauv qhuav-Hom Transformer?

Muaj ntau qhov chaw ntawm tshav kub, tab siscore poob thiab winding poobyog cov loj.

Core poob tshwm sim thaum twg lub transformer yog energized. Nws feem ntau yog los ntawm hysteresis thiab eddy tam sim no hauv cov tub ntxhais hlau nplaum. Tsis zoo li winding poob, nws tsis ploj thaum lub transformer maj mam loaded.

Winding poob yog zoo dua khi rau load tam sim no. Cov khoom tiv thaiv resistive feem ntau hais tias:

P = I²R

Qhov no tsim nyog them nyiaj rau vim tias tam sim no yog squared. Yog tias qhov tam sim no nce, cua sov cua sov tuaj yeem nce sai dua li qhov koj xav tau.Ntawm 80% ntawm cov ntsuas tam sim no, piv txwv li, I²R tivthaiv ntawm winding poob yog kwv yees li 64% ntawm tus nqi ntawm qhov ntsuas tam sim no, piv txwv li lwm yam xwm txheej zoo sib xws.

Tseem muajstray thiab poob ntxiv. Cov dej ntws tawm tuaj yeem cuam tshuam cov dej ntws hauv cov khoom siv hlau, tsim kom muaj cua sov hauv zos. Harmonic tam sim no tuaj yeem ua rau qhov xwm txheej nyuaj, thiab. Cov khoom siv xws li UPS systems, sib txawv - zaus tsav, hnub ci inverters, EV chargers, thiab lwm yam hwj chim- electronic loads tej zaum yuav qhia harmonics thiab nce transformer cua sov.

Yog li, qhov ntsuas kub kawg yog qhov sib npaug:Qhov hluav taws xob ntau npaum li cas lub transformer tsim tawm piv rau ntau npaum li cas nws tuaj yeem tshem tau.

ambient kub tseem ceeb thiab. Lub tshuab hluav taws xob ua haujlwm hauv chav hluav taws xob kub muaj qhov cua sov tsawg dua li tib lub tshuab hluav taws xob tau nruab rau hauv lub tshuab txias, zoo - qhov chaw cua.

Kub nce ntawm Tsis yog -Resin Qhuav- Hom Transformers

Tsis yog -resin qhuav- hom transformers siv rwb thaiv tsev tshuab uas tsis nyob ntawm ua tiav epoxy resin encapsulation. Nyob ntawm tus qauv tsim, cov windings yuav siv cov kua roj vanish, fiberglass, Nomex, cua rwb thaiv tsev, lossis lwm yam khoom siv rwb thaiv tsev.

Vim tias tsis muaj cov cam khwb cia tuab-cov txheej txheej nyob ib puag ncig cov windings, airflow tuaj yeem ua lub luag haujlwm tseem ceeb. Tus tsim yuav tsum tau muab qhov chaw txaus rau cov cua sov kom txav deb ntawm qhov chaw ua haujlwm yam tsis muaj qhov tsim nyog thermal bottlenecks.

Thaum tshav kub kub Dissipation nto ntawm Tsis yog -Resin Qhuav- Hom Transformers

CovThaum tshav kub kub dissipation nto ntawm uas tsis yog -resin qhuav- hom transformersyog qhov tseem ceeb ntawm thaj chaw muaj rau kev hloov cov cua sov rau hauv cov huab cua ib puag ncig.

Thaum tshav kub kub generated nyob rau hauv cov tub ntxhais thiab windings yuav tsum tau mus los ntawm rwb thaiv tsev thiab structural Cheebtsam ua ntej nws mus txog saum huab cua. Ib qho zoo thermal tsim muab cov cua sov no ib qho kev ncaj qha tawm ntawm lub transformer.

Winding geometrytseem ceeb ntawm no. Radial thiab axial cua channel tuaj yeem pab cov cua txias nkag mus rau sab qis ntawm lub tshuab hloov pauv thaum huab cua sov tuaj thiab tawm mus rau sab saud. Nyob rau hauv ib txwm txias transformers, qhov kev ncig no tshwm sim los ntawmconvection.

Nws suab yooj yim, tab sis kev teeb tsa tuaj yeem yooj yim tau hauv txoj kev.

Yog tias lub tshuab hluav taws xob tau teeb tsa ze rau ntawm phab ntsa, qhov qhib qhov cua raug thaiv, lossis chav hluav taws xob muaj cua tsis zoo, qhov ntsuas kub ntawm qhov kev ua haujlwm yuav siab dua li qhov xav tau.

Rau cov chav loj dua, yuam- cua txias tuaj yeem siv los ua kom muaj cua nkag thiab muaj peev xwm ntxiv. Tab sis tsuas yog tso tus kiv cua ntawm ib sab ntawm lub transformer tsis txaus. Cov huab cua yuav tsum tau mus txog qhov kev npaj txias txias hauv lub transformer.

Thaum tshav kub kub Load of Non-Resin Dry-Type Transformers

CovThaum tshav kub kub load ntawm tsis yog -resin qhuav- hom transformersfeem ntau cuam tshuam nrog lawv cov kev poob tag nrho raws li kev ua haujlwm tiag tiag.

Core poob yog tam sim no thaum twg lub transformer yog energized, thaum winding poob hloov nrog lub load. Raws li tam sim no mus txog tus nqi ntsuas, cua sov cua sov nce ntau vim yog I²R kev sib raug zoo.

Kev sib txuas ntawm kev thauj khoom nws tus kheej kuj tsim nyog mloog. Ib qho kev hloov pauv uas muab cov kab ncaj nraim ncaj nraim tuaj yeem muaj qhov ntsuas tau zoo thermal. Lub transformer pub UPS cov cuab yeej, sib txawv - tsav ceev, rectifiers, los yog lwm yam uas tsis yog-linear loads yuav yog ib zaj dab neeg sib txawv.

Harmonic tam sim no tuaj yeem ua rau poob ntxiv thiab ua rau cua sov ntxiv hauv cov windings thiab cov khoom siv hlau. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov chaw zov me nyuam, cov chaw tsim khoom lag luam, cov phiaj xwm hluav taws xob tauj dua tshiab, thiab kev teeb tsa EV.

Rau cov ntawv thov no, kev xaiv transformer yuav tsum tsis txhob ua raws li daim ntawv teev npe kVA nkaus xwb. Harmonic cov ntsiab lus, load profile, lub sijhawm ua haujlwm, thiab kev loj hlob yav tom ntej yuav tsum tau xav txog.

Kub nce ntawm Tsis yog -Resin Qhuav- Hom Transformers

Covkub nce ntawm tsis yog -resin qhuav- hom transformersyog txiav txim los ntawm qhov sib npaug ntawm kev tsim hluav taws xob thiab cov cua kub dissipation.

Thaum lub transformer yog thawj zaug energized, nws kub maj mam nce. Raws li qhov kub ntawm qhov sib txawv ntawm lub transformer thiab cov huab cua ib puag ncig yuav loj dua, cov cua kub dissipation kuj nce. Thaum kawg, lub transformer ncav cuag ib tug kuj zoo thermal mob.

Tab sis qhov kub thiab txias tsis zoo li txhua qhov chaw.

Cov tub ntxhais, windings, rwb thaiv tsev, clamps, thiab cov khoom siv hluav taws xob tuaj yeem ua haujlwm ntawm qhov kub sib txawv. Qee ntu ntawm winding tuaj yeem ua rau kub siab tshaj qhov nruab nrab winding kub. Cov chaw no feem ntau hu ua qhov chaw kub.

Qhov kev sib txawv no tseem ceeb vim tias kev tiv thaiv kev laus muaj zog cuam tshuam los ntawm cov chaw kub tshaj plaws. Kev ntsuas sab nraud ntawm lub transformer tuaj yeem muab cov ntaub ntawv tseem ceeb thaum kho, tab sis nws tsis tas yuav qhia koj tias muaj dab tsi tshwm sim hauv qhov winding.

IEC 60076-11 muab qhov yuav tsum tau ua rau qhov kub thiab txias -nce kev ntsuas ntawm cov tshuab ziab khaub ncaws qhuav. Cov kev siv feem ntau suav nrog kwv yees li80 K rau Class B rwb thaiv tsev, 100 K rau chav F, thiab 125 K rau chav H, nyob ntawm seb tus qauv siv tau thiab kev tsim qauv transformer.

Kub nce ntawm Resin Qhuav-Hom Transformers

Resin qhuav-hom transformers, tshwj xeeb tshaj yogcam khwb cia-resin transformers, siv epoxy resin ua ib feem tseem ceeb ntawm cov kab hluav taws xob rwb thaiv tsev.

Cov resin muab hluav taws xob rwb thaiv tsev thiab kev txhawb nqa txhua yam thaum pab tiv thaiv windings los ntawm ya raws, plua plav, thiab lwm yam kab mob ib puag ncig. Tib lub sijhawm, nws dhau los ua ib feem ntawm cov cua sov- hloov txoj kev.

Qhov ntawd txhais tau hais tias cov khoom thermal ntawm cov resin teeb meem. Yog li ua qhov kev npaj winding, tus neeg xyuas pib loj, resin thickness, txias ducts, thiab tag nrho transformer poob.

Cam khwb cia-resin transformers feem ntau yog siv rau hauv cov tsev lag luam, cov chaw tsim khoom, kev tsim hluav taws xob txuas ntxiv, kev thauj mus los, thiab lwm yam kev siv uas muaj kev tiv thaiv ib puag ncig thiab kev rwb thaiv tsev zoo yog qhov tseem ceeb.

Kub nce ntawm Resin Qhuav-Hom Transformer Core

Covkub nce ntawm ib tug resin qhuav - hom transformer corefeem ntau yog los ntawmcore poob.

Hysteresis thiab eddy - tam sim no poobtshwm sim thaum twg lub hauv paus yog energized. Lawv qib nyob ntawm cov khoom sib nqus, kev khiav hauj lwm zaus, flux ceev, lamination thickness, thiab tag nrho cov tub ntxhais tsim.

Kev siv lub siab- cov khoom siv hluav taws xob zoo thiab ua kom cov hlau nplaum sib nqus nyob rau hauv qhov tsim nyog tuaj yeem pab txo qis qhov poob. Tab sis kev txo qis tsuas yog ib feem ntawm txoj haujlwm. Cov cua sov uas tseem tshuav tseem xav tau ib txoj hauv kev zoo tawm ntawm lub transformer.

Ntau dhau ntawm cov stray flux lossis cov qauv hlau tsis zoo kuj tuaj yeem tsim cov cua sov hauv cheeb tsam hauv cov tub ntxhais thiab cov khoom siv hlau nyob ze. Qhov no yog vim li cas electromagnetic thiab thermal tsim yuav tsum tau txiav txim siab ua ke tsis yog cais.

Thaum lub sijhawm ntsuas kub ntawm lub Hoobkas- nce siab, lub tshuab hloov pauv tau ua haujlwm kom txog thaum nws mus txog qhov ntsuas kub ruaj khov. Cov txiaj ntsig ntsuas tau pab kom paub meej tias nws tuaj yeem ua haujlwm ntawm nws cov kev ntsuas ntsuas yam tsis muaj tshaj li qhov txwv.

Kub Rise ntawm Resin Qhuav-Hom Transformer Windings

Covkub nce ntawm resin qhuav -hom transformer windingsyog ib qho tseem ceeb tshaj plaws thermal kev txiav txim siab hauv cam khwb cia-resin transformer tsim.

Tam sim no ntws los ntawm cov conductors ua kom sov. Thaum tshav kub kub ntawd yuav tsum taug kev los ntawm cov rwb thaiv tsev thiab cov resin ua ntej nws tuaj yeem ncav cuag huab cua ib puag ncig.

Raws li qhov tshwm sim, tus neeg xyuas pib loj, qhov ceev tam sim no, kev teeb tsa winding, rwb thaiv tsev thickness, resin thermal zog, txoj kev cua txias, thiab kev thauj khoom poob tag nrho cuam tshuam rau qhov kawg winding kub.

Thiab ib zaug ntxiv, qhov kub thiab txias hauv winding tsis zoo tag nrho. Ib qho chaw kub kub sab hauv tuaj yeem kub kub dua li cov khoom siv sab nrauv.

Qhov no yog vim li cas tus pas ntsuas kub infrared muaj txiaj ntsig zoo rau kev kuaj xyuas cov xwm txheej sab nraud thaum lub sijhawm tu, tab sis nws tsis tuaj yeem txiav txim siab qhov kub ntawm sab hauv - qhov chaw kub.

Qhov no ua qhov tseem ceeb dua nrog kev xav tau ntawm cov khoom thauj. Kev lag luam tshuab, cov ntaub ntawv chaw, cov cuab yeej siv hluav taws xob txuas ntxiv, thiab lub zog- tshuab hluav taws xob tuaj yeem tsim kev hloov pauv sai lossis muaj peev xwm ua haujlwm siab. Lub transformer xaiv rau cov ntawv thov no yuav tsum raug ntsuas raws li nws qhov kev ua haujlwm tiag tiag, tsis yog nws qhov kev ntsuas nominal kVA.

Kub nce thiab rwb thaiv tsev Class

Cov chav kawm rwb thaiv tsev thermal yog lwm qhov tseem ceeb ntawm qhov kub thiab txias - sawv daim duab.

Piv txwv li, yog tias qhov ntsuas kub ntawm qhov nruab nrab yog 40℃thiab qhov ntsuas kub tau nce yog 100 K, qhov nruab nrab cua kub yuav yog kwv yees li 140 degree.

Qhov ntawd tsis txhais hais tias txhua qhov taw qhia hauv qhov cua yog raws nraim 140 degree. Cov chaw kub kub sab hauv tuaj yeem siab dua.

Cov chav kawm rwb thaiv tsev siab dua muab cov peev txheej thermal ntau dua, tab sis nws yuav tsum tsis txhob raug txhais tias yog vim li cas thiaj li txhob txwm ua haujlwm ntawm lub transformer kub. Ua kom cov kev khiav hauj lwm kub tswj tseem yuav pab txo cov rwb thaiv tsev laus thiab muab ntau dua thermal margin.

Resin vs. Tsis yog-Resin Qhuav-Hom Transformer Kub nce

Ob leeg cob thiab tsis yog - cob qhuav- hom transformers tuaj yeem muab kev ua haujlwm thermal txhim khu kev qha thaum tsim tau zoo.

Tsis muaj txoj cai yooj yim hais tias ib hom ib txwm muaj qhov ntsuas kub qis dua.

Lub qhov dej-tsim uas tsis yog-resin transformer tuaj yeem tso cov cua sov kom zoo los ntawm cov qauv qhib winding thiab airflow zoo. Lub cam khwb cia-resin transformer, lub sijhawm no, tuaj yeem ua ke cov khoom siv dag zog thiab kev tiv thaiv ib puag ncig nrog kev ua haujlwm zoo thermal thaum nws cov resin thiab winding tsim tau raug tsim kho kom zoo.

Qhov kev xaiv zoo dua yog nyob ntawm daim ntawv thov, ib puag ncig kev teeb tsa, qhov xav tau rwb thaiv tsev, cov xwm txheej thauj khoom, thiab qhov project specifications.

Yuav Tswj Qhuav li cas -Hom Transformer Temperature Rise

Lub tswv yim yooj yim zoo nkauj ncaj nraim:tsim kom muaj cua sov tsawg thiab tshem tawm cov cua sov uas tsim tau zoo dua.

Tsawg- cov ntaub ntawv tseem ceeb poob, cov khoom siv loj loj, cov qauv ua kom zoo dua qub, thiab cov cua txias zoo tuaj yeem pab txo qhov kub thiab txias thaum lub sij hawm tsim.

Qhov tseeb transformer qhov loj me yog qhov tseem ceeb. Lub transformer uas ua haujlwm tsis tu ncua ntawm lossis ze rau tag nrho cov load yuav ib txwm muaj kev ntxhov siab ntau dua li ib qho uas muaj peev xwm seem.

Lub installation ib puag ncig tseem ceeb heev. Yuav tsum muaj qhov chaw txaus nyob ib ncig ntawm lub transformer rau huab cua ncig, thiab qhov qhib qhov cua yuav tsum nyob twj ywm. Yog tias lub tshuab hloov pauv tau nruab rau hauv chav hluav taws xob, chav tsev qhov cua lossis cua - cua txias system yuav tsum suav rau cov cua sov tso tawm los ntawm lub tshuab hloov pauv.

Rau cov transformers tsim rau AN/AF kev ua haujlwm, yuam- cua txias tuaj yeem muab lub peev xwm ntxiv thaum lub sijhawm xav tau siab. Cov kiv cua thiab kev tswj hwm yuav tsum tau kuaj xyuas tsis tu ncua kom cov cua txias ntxiv muaj nyob rau thaum xav tau.

Kev saib xyuas niaj hnub tuaj yeem tiv thaiv ntau yam teeb meem uas tsis tuaj yeem zam tau. Plua plav buildup tuaj yeem txwv cov cua ntws, thaum cov hluav taws xob xoob xoob tuaj yeem tsim cov chaw kub kub. Nyob qhov twg tsis muaj cov khoom thauj tsis zoo, kev kuaj xyuas cov dej sib haum xeeb kuj tseem tuaj yeem pab txheeb xyuas qhov kev npaj txhij txog ntawm cov cua sov transformer.

Vim li cas Kub Rise Matters rau Transformer Service Life

Kub muaj kev sib raug zoo nrog rwb thaiv tsev laus. Kev ua haujlwm tsis tu ncua ntawm qhov kub ntau dhau tuaj yeem ua kom lub rwb thaiv tsev tsis zoo thiab nws thiaj li ua rau lub neej ua haujlwm luv luv.

Txawm li cas los xij, qhov kub nce siab yuav tsum tsis txhob xav txog nws tus kheej. Rwb thaiv tsev chav kawm, ambient kub, loading, txias txoj kev, thiab transformer tsim tag nrho ua hauj lwm ua ke.

Thaum xaiv qhov qhuav -hom transformer, nws yog qhov zoo dua los saib tshaj qhov kev ntsuas hluav taws xob thiab kVA. Cov txheej txheem thermal tseem ceeb suav nrog qhov kub thiab txias, chav tsev rwb thaiv tsev, cua txias, tsis muaj -load poob, load poob, ambient kub, installation altitude, harmonic loading, thiab xav tias load profile.

Xaus

Covkub nce ntawm qhuav- hom transformersyog ib feem tseem ceeb ntawm kev ntsuam xyuas transformer kev ua tau zoo thiab kev ntseeg tau. Core, winding, stray, thiab kev poob ntxiv tsim kom muaj cua sov, thaum lub transformer kev tsim kho thiab kev teeb tsa ib puag ncig txiav txim siab npaum li cas cov cua sov raug tshem tawm.

Raunon-resin qhuav- hom transformers, lub tshav kub dissipation nto, airflow, thiab winding cooling ducts ua lub luag haujlwm tseem ceeb. Rauresin qhuav-hom transformers, cov khoom thermal ntawm cov resin thiab kev tsim ntawm cov khoom siv encapsulated yog qhov tseem ceeb sib npaug.

Qhov kub thiab txias -nce tus nqi yuav tsum tsis txhob raug saib raws li ib daim duab cais. Nws ua rau muaj kev nkag siab ntau dua thaum suav nrog cov chav kawm rwb thaiv tsev, ambient kub, transformer loading, txias txoj kev, poob, qhov siab, thiab harmonic cov ntsiab lus.

Rau cov nroj tsuag kev lag luam, cov tsev lag luam, kev tsim hluav taws xob tauj dua tshiab, cov chaw khaws ntaub ntawv, thiab lwm yam kev thov, xaiv qhov qhuav- hom transformer nrog cov thermal tsim zoo tuaj yeem pab ua kom cov cua sov ua haujlwm hauv qab tswj tau, kev tiv thaiv kev laus qeeb, thiab txhawb kev lag luam txhim khu kev qha ntawm lub tshuab hluav taws xob lub neej.

Hu rau tam sim no