Rwb thaiv tsev theem ntawm transformer

Raws li cov khoom siv hluav taws xob tseem ceeb hauv lub zog hluav taws xob, qhov rwb thaiv tsev theem ntawm transformer yog ncaj qha cuam tshuam rau kev nyab xeeb thiab ruaj khov ntawm lub zog hluav taws xob. Cov txheej txheem rwb thaiv tsev yog lub peev xwm ntawm lub tshuab hloov hluav taws xob los tiv thaiv ntau yam overvoltages thiab lub sijhawm ntev ua haujlwm siab tshaj plaws thaum lub sijhawm ua haujlwm, thiab yog qhov tseem ceeb uas tsis tuaj yeem tsis quav ntsej txog kev tsim, tsim khoom, kev ua haujlwm thiab kev saib xyuas ntawm lub transformer.

1. Cov ntsiab lus ntawm rwb thaiv tsev ntawm transformer The rwb thaiv tsev theem yog hais txog lub peev xwm ntawm lub rwb thaiv tsev qauv ntawm lub transformer kom muaj kev ncaj ncees thiab kev nyab xeeb thaum nws withstands ntau yam overvoltages thiab ntev ua hauj lwm voltages. Qhov no suav nrog cov qib voltage uas tuaj yeem zam tau ua ke nrog kev tiv thaiv xob laim thiab ncaj qha nyob ntawm qhov siab tshaj plaws voltage Um ntawm cov khoom siv.

2. Rwb thaiv tsev qauv ntawm transformer Raws li seb lub rwb thaiv tsev theem ntawm winding kab kawg thiab qhov nruab nrab point yog tib yam, lub transformer yuav muab faib ua ob lub rwb thaiv tsev: tag nrho cov rwb thaiv tsev thiab graded rwb thaiv tsev. Lub transformer nrog tag nrho cov txheej txheem rwb thaiv tsev muaj tib theem rwb thaiv tsev ntawm winding kab kawg thiab qhov nruab nrab taw tes, muaj ib tug ntau dua rwb thaiv tsev npoo, thiab yog haum rau transformers nrog high voltage theem thiab complex kev khiav hauj lwm ib puag ncig. Lub transformer nrog graded rwb thaiv tsev qauv teeb tsa cov txheej txheem rwb thaiv tsev sib txawv ntawm cov kab winding kawg thiab cov ntsiab lus nruab nrab raws li qhov xav tau tiag tiag los txhim kho cov rwb thaiv tsev tsim thiab txo cov nqi.

3. Kev ntsuam xyuas qhov rwb thaiv tsev theem ntawm lub transformer Yuav kom ntseeg tau tias cov rwb thaiv tsev theem ntawm lub transformer ua tau raws li tus tsim, yuav tsum tau ib tug series ntawm rwb thaiv tsev kev ntsuam xyuas. Rau cov transformers uas muaj qhov voltage ntawm 220kV thiab qis dua, 1-feeb fais fab zaus tiv taus qhov ntsuas hluav taws xob thiab kev ntsuas hluav taws xob impulse feem ntau yog ua los ntsuas lawv lub zog rwb thaiv tsev. Rau cov khoom siv hluav taws xob uas muaj qhov hluav taws xob ntau dua, kev sim ua kom muaj zog ntxiv kuj yuav tsum tau ua. Nyob rau hauv lub Hoobkas kev xeem, ib tug withstand voltage xeem yog feem ntau nqa tawm nyob rau hauv ntau tshaj ob zaug lub rated voltage nyob rau tib lub sij hawm ntsuas lub rwb thaiv tsev kev ua tau zoo ntawm lub ntsiab rwb thaiv tsev thiab longitudinal rwb thaiv tsev.

Tsis tas li ntawd, ntsuas qhov kev tiv thaiv kev tiv thaiv, kev nqus qhov sib piv thiab polarization Performance index ntawm winding ua ke nrog cov bushing kuj yog ib qho tseem ceeb rau kev ntsuam xyuas tag nrho cov rwb thaiv tsev ntawm lub transformer. Cov kev ntsuas no tuaj yeem kuaj xyuas tag nrho cov dej noo ntawm cov rwb thaiv tsev transformer, cov dej noo los yog av ntawm qhov chaw ntawm lub Cheebtsam, thiab cov concentration ntawm kev nkag mus.

4. Cov yam ntxwv cuam tshuam rau qib rwb thaiv tsev ntawm lub transformer Thaum lub sij hawm ua hauj lwm ntawm lub transformer, cov yam ntxwv uas cuam tshuam rau lub rwb thaiv tsev theem feem ntau muaj xws li kub, av noo, roj tiv thaiv txoj kev thiab overvoltage nyhuv. 1) Kub: Kub yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm rwb thaiv tsev ntawm transformer. Lub rwb thaiv tsev kev ua tau zoo ntawm cov khoom siv insulating txo qis nrog qhov nce ntawm qhov kub thiab txias, thiab muaj cov dej noo nyob hauv cov roj tseem yuav ua rau kom muaj kev laus ntawm cov rwb thaiv tsev. Yog li ntawd, kev tswj xyuas qhov kub thiab txias ntawm lub transformer thiab kev tswj xyuas qhov zoo ntawm cov khoom siv insulating yog qhov tseem ceeb rau kev txhim kho cov rwb thaiv tsev.

2) Cov av noo: Lub xub ntiag ntawm cov av noo yuav ua rau cov laus ntawm cov khoom siv insulating thiab txo nws cov rwb thaiv tsev. Yog li ntawd, thaum lub sij hawm ua hauj lwm ntawm lub transformer, lub ambient humidity yuav tsum nruj me ntsis tswj kom tsis txhob muaj cov ntaub ntawv insulating los ntawm damp.

3) Txoj kev tiv thaiv roj: Cov kev tiv thaiv roj sib txawv muaj qhov sib txawv ntawm kev ua haujlwm ntawm rwb thaiv tsev. Txij li cov roj saum npoo ntawm lub kaw lus transformer yog rwb thaiv tsev los ntawm huab cua, nws tuaj yeem tiv thaiv cov volatilization thiab diffusion ntawm CO thiab CO2 hauv cov roj, yog li tswj cov kev ua tau zoo ntawm cov roj insulating.

4) Overvoltage effect: Overvoltage effect yog lwm qhov tseem ceeb cuam tshuam rau qib rwb thaiv tsev ntawm lub transformer. Ob qho tib si xob laim overvoltage thiab ua hauj lwm overvoltage yuav ua rau puas tsuaj rau lub rwb thaiv tsev qauv ntawm lub transformer. Yog li ntawd, thaum tsim thiab ua haujlwm ntawm lub tshuab hloov pauv, qhov cuam tshuam ntawm overvoltage yuav tsum tau txiav txim siab tag nrho thiab cov kev ntsuas tiv thaiv yuav tsum tau ua.