Tej yam uas cuam tshuam rau kev pab cuam lub neej ntawm qhuav-Hom Transformers

Taw qhia

Qhuav- hom transformers raug xaiv rau kev teeb tsa sab hauv tsev thiab rhiab vim tias lawv ua haujlwm tau zoo, nyob ntsiag to, thiab tsis muaj roj- cuam tshuam txog kev cuam tshuam thiab muaj kuab paug. Lawv tseem muaj lub neej ua haujlwm tsis tu ncua, thiab lub neej ntawd txiav txim siab los ntawm kev sib xyaw ntawm rwb thaiv tsev laus, kev ua haujlwm ib puag ncig, cov qauv thauj khoom, kev saib xyuas zoo, thiab tus qauv tsim thiab kev teeb tsa. Kev nkag siab txog cov xwm txheej no cia cov neeg ua haujlwm tiv thaiv cov khoom vaj khoom tsev thiab lub sijhawm hloov pauv es tsis ua rau tsis ua haujlwm.

Insulation Aging thiab Winding Temperature

Lub neej ntawm qhuav-hom transformer yog qhov tseem ceeb ntawm lub neej ntawm nws cov rwb thaiv tsev. Cam khwb cia-resin thiab Class F lossis Class H rwb thaiv tsev yog ntsuas rau kev ua haujlwm tas mus li ntawm qhov kub siab tshaj plaws - qhov chaw kub, feem ntau yog 155 C rau Class F thiab 180 C rau Class H. Rwb thaiv tsev laus yog cov txheej txheem tshuaj thermal: txhua qhov kev txhawb nqa nce hauv cov ntaub ntawv kub siab tshaj tus nqi tsim ua kom muaj zog ntawm kev laus, thiab kev sib raug zoo ntawm EC yog kev sib raug zoo. 60076-12. Kev txhawb nqa overloads, thaiv qhov cua, lossis qhov kub ntawm qhov nruab nrab yog li ua rau lub neej luv dua li lub sijhawm luv luv. Qhov ntsuas kub qhov ntsuas cua thiab cov PTC embedded sensors muaj nyob kom paub meej qhov xwm txheej no.

Kev tsim khoom thiab cov khoom siv

Kev pabcuam lub neej pib hauv lub hoobkas. Lub tshuab nqus tsev- cam khwb cia resin windings yog dawb ntawm voids uas yuav dhau los ua ib feem ntawm qhov chaw tawm, siab - qib tooj liab lossis aluminium conductors nrog raug txiav kom raug zam qhov kub kub, thiab lub rwb thaiv tsev zoo tiv thaiv cov dej noo thiab thermal cycling. Lub transformer ua rau IEC 60076-11 nrog kev txheeb xyuas ib feem ntawm qhov tso tawm qis dua qhov txwv tsis pub muaj kev pheej hmoo tsawg dua ntawm kev ua tsis tiav ntxov dua li chav tsev los ntawm cov txheej txheem tsis tswj hwm. Tus neeg yuav khoom yuav tsum thov cov txheej txheem niaj hnub thiab hom ntawv xeem ua pov thawj ntawm cov txheej txheem zoo.

Kev ua haujlwm ib puag ncig

Ib puag ncig ib puag ncig ntawm chav tsev tsav ntau lub tshuab kev laus:

Qhov kub ntau dhau txo qhov thermal margin hauv qab qhov ntsuas qhov ntsuas hluav taws xob thiab ua kom muaj kev laus ntawm txhua qhov kev thauj khoom.

High humidity thiab condensation txo cov nplaim hluav taws xob tiv thaiv thiab tuaj yeem pib taug qab ntawm windings.

Plua plav tsub zuj zuj blocks cov ducts cua txias, tsa lub winding kub ntawm tas li load.

Corrosive gases thiab conductive plua plav tawm tsam lub rwb thaiv tsev nto thiab qhov kev txiav tawm.

IP20 rau IP23 enclosure, chav huv si, thiab tswj cov av noo hauv qab qhov kev pom zoo ntawm 90 feem pua ​​​​yog qhov kev tiv thaiv zoo. Qhov siab kuj tseem ceeb: siab dua 1000 m huab cua ntom ntom, yog li lub peev xwm txias poob thiab chav tsev yuav tsum tau derated raws li IEC 60076-11.

Kev ua haujlwm thiab kev thauj khoom

Yuav ua li cas lub transformer yog loaded tseem ceeb tshaj li cas nws yog loaded nyob rau nruab nrab.

Kev ua haujlwm dhau los saum toj ntawm daim ntawv teev npe nce qhov kub tshaj plaws - qhov chaw kub thiab siv lub neej rwb thaiv tsev ntawm tus nqi nce ntxiv.

Kev pib hnyav heev thiab thauj khoom viav vias tsim thermal cycling uas cuam tshuam cov rwb thaiv tsev thiab kev sib txuas.

Voltage distortion thiab harmonics ua rau cov eddy tam sim no poob nyob rau hauv lub windings thiab nce qhov kub thiab txias txawm nyob rau hauv ib tug me me load.

Voltage excursions sab nraum lub kais dej ntau ua rau flux ceev nyob rau hauv cov tub ntxhais thiab cov magnetizing tam sim no.

Kev soj ntsuam cov load, voltage, thiab winding kub nyob rau lub sij hawm, thiab tshuaj xyuas cov ntaub ntawv tiv thaiv lub loading phau ntawv qhia, yog tus txheej txheem kom lub tsev nyob rau hauv nws lub hnab ntawv tsim.

Kev kho thiab tshuaj xyuas

Qhuav- hom transformers yuav tsum tsis txhob hloov roj, tab sis lawv yuav tsum tau teem sijhawm saib xyuas:

Kev tu txhua lub sijhawm ntawm windings thiab cua txias ducts, vim tias plua plav yog feem ntau ua rau ntsiag to overtemperature.

Kev tshuaj xyuas thiab rov ua dua -torquing hluav taws xob sib txuas, uas nws loosening nyob rau hauv thermal cycling yog ib qho chaw kub heev.

Tshawb xyuas cov kiv cua txias thiab cov cua tshuab ua haujlwm thiab tias txoj kev cua tsis muaj kev cuam tshuam.

Kev ntsuas kev tiv thaiv kev tiv thaiv ib xyoos ib zaug, nrog cov txiaj ntsig tau muab piv rau cov hauv paus ntsiab lus, ntxiv rau thermal imaging ntawm cov kev sib txuas.

Kev sim ua haujlwm ntawm qhov kub thiab txias relays, tswb, thiab ib qho yuam kev -air interlock.

Cov ntaub ntawv khaws cia tau hloov pauv me me tsis zoo rau hauv kev kho raws li teem tseg es tsis txhob npaj ua tsis tiav.

Tsim thiab Installation Zoo

Ib lub qhov dej zoo-tsim tsim tau teeb tsa tsis zoo tuaj yeem ua tsis tiav thaum ntxov, thiab tus qauv tsim qauv tsim tau zoo tseem ua rau nws tsim kev pheej hmoo. Chav tsev yuav tsum muab cov clearances, qhov cua, thiab ambient tswj nyob rau hauv qhov kev ntsuam xyuas, thiab lub earthing thiab kev tiv thaiv yuav tsum phim lub transformer impedance. Cov ntsiab lus ntawm kev teeb tsa xws li cable dabtsi yog khoov vojvoog, kev txhawb nqa busbar, thiab kev sib cais ntawm kev vibration tag nrho ua rau lub neej txhua yam ntawm cov windings thiab kev sib txuas.

Cov lus nug nquag

Dab tsi yog qhov kev pab cuam lub neej ntawm qhuav -hom transformer?

Nrog rau kev thauj khoom thiab kev saib xyuas kom raug, lub tshuab ziab khaub ncaws qhuav -hom transformer yog tsim los rau kev pab cuam lub neej ntawm 25 mus rau 30 xyoo. Qhov kev txwv tsis pub tshaj yog cov rwb thaiv tsev, uas nws qhov xwm txheej tau saib xyuas los ntawm cov ntaub ntawv ntsuas kub thiab ntsuas kev ntsuas hluav taws xob.

Puas yog overloading qhuav -hom transformer luv nws lub neej?

Yog lawm. Tshaj dhau nce qhov cua kub tshaj plaws - qhov chaw kub, thiab rwb thaiv tsev laus nrawm nrawm nrog qhov kub thiab txias. Kev kub ceev luv luv overloads raws li IEC 60076-12 yog qhov lees txais, tab sis kev ruaj khov tshaj qhov tsis muaj derating siv qhov tsis sib xws ntawm lub neej rwb thaiv tsev.

Yuav tsum tau ntxuav cov windings ntau npaum li cas?

Yam tsawg kawg ib xyoos ib zaug, thiab ntau zaus hauv thaj chaw muaj plua plav. Kev ntxuav nrog cov cua compressed qhuav los yog tsawg- lub tshuab nqus tsev siab tshem tawm cov plua plav uas thaiv cov kav dej txias; lub sij hawm yuav tsum tau ua raws li cov plua plav pov tseg tiag tiag thaum kuaj xyuas.

Cov av noo puas tuaj yeem ua rau qhuav -hom transformer?

High humidity thiab condensation txo qhov rwb thaiv tsev tiv thaiv thiab tuaj yeem pib taug qab cov paug tawm ntawm qhov chaw winding. Ua kom chav tsev qis dua 90 feem pua ​​​​ntawm cov av noo thiab tsis txhob muaj qhov sib xyaw ua ke, tshwj xeeb tshaj yog tom qab kaw, tiv thaiv lub rwb thaiv tsev.

Qhov kub tshaj - qhov kub thiab txias yog dab tsi thiab vim li cas nws thiaj li saib xyuas?

Nws yog qhov kub siab tshaj plaws nyob rau hauv lub winding, uas yog qhov chaw uas rwb thaiv tsev hnub nyoog ceev tshaj plaws. Qhov ntsuas ntsuas ntsuas qhov kub siab tshaj plaws - qhov kub thiab txias rau cov chav tsev rwb thaiv tsev, thiab lub kaw lus saib xyuas tiv thaiv lub tsev los ntawm kev ceeb toom lossis kev poob qis ua ntej qhov kev txwv yuav dhau mus.

Puas harmonics txo lub neej ntawm ib tug qhuav-hom transformer?

Harmonic tam sim no nce qhov poob tam sim no nyob rau hauv cov windings thiab cov stray losses nyob rau hauv lub structural qhov chaw, tsa qhov kub thiab txias ntawm ib qho tseem ceeb load. Rau kev teeb tsa nrog hnyav nonlinear loads, chav tsev yuav tsum tau qhov loj me nrog qhov sib haum xeeb derating yam, thiab qhov tseeb tam sim no spectrum yuav tsum tau ntsuas thaum lub sij hawm commissioning.