630 kVA 10kV Qhuav-Hom Transformer: Impedance Voltage thiab Load Adaptability

Dab tsi yog Impedance Voltage?

impedance voltage, feem ntau sau ua Uk thiab qhia raws li feem pua, yog qhov voltage uas yuav tsum tau siv rau ib tug winding ntawm rated zaus thaum lwm winding yog luv luv -circuited, thiaj li yuav circulate rated tam sim no. Nws yog cov vector sum ntawm cov resistive thiab reactive voltage poob ntawm lub transformer, thiab nws yog ntsuas thiab txhais raws li IEC 60076-1. Rau ib tug 630 kVA 10kV qhuav-hom transformer, lub impedance voltage yog ib tug ruaj tsim nqi, feem ntau teev nyob rau hauv lub nameplate, feem ntau nyob rau hauv ntau ntawm 4% mus rau 8%.

Vim li cas Impedance Voltage Matters

Luv - Circuit Court tam sim no txwv

Qhov luv luv symmetrical -circuit tam sim no yog kwv yees li qhov ntsuas tam sim no faib los ntawm impedance (raws li tus lej). Ib chav tsev nrog 6% impedance txwv qhov txhaum tam sim no txog li 16.7 npaug ntawm qhov ntsuas tam sim no, thaum 4% chav tsev yuav tso cai txog 25 zaug. Tus nqi xaiv yuav tsum sib koom tes nrog lub peev xwm tawg ntawm cov khoom siv hluav taws xob sab saud thiab qhov kev ntsuas ntawm cov khoom siv hauv qab.

Kev tswj hluav taws xob

Nyob rau hauv load, lub internal voltage poob ntawm lub transformer yog proportional rau lub impedance. Ib qho impedance siab dua txhais tau hais tias qhov hluav taws xob loj dua poob ntawm qhov tsis muaj -load thiab tag nrho - load tej yam kev mob, uas yuav muaj teeb meem rau cov khoom rhiab heev ntawm qhov kawg ntawm cov feeders ntev. Cov tshuaj tiv thaiv reactive dominates nyob rau hauv qhuav- hom thiab roj- puv units tib yam.

Parallel kev ua haujlwm

Transformers txuas nrog nyob rau hauv parallel yuav tsum muaj impedance voltages nyob ze kam rau ua (feem ntau nyob rau hauv 10% ntawm txhua lwm yam, raws li IEC 60076-1 kev taw qhia) kom lub load shares proportionally rau cov kev ntsuam xyuas. Qhov kev tsis sib haum xeeb yuam kom ib chav ua haujlwm nqa ntau dua li nws feem.

Tus nqi zoo rau 630 kVA 10kV Chav Kawm

Optimization Trade- tawm

Kev txo qis impedance txhim kho kev tswj hluav taws xob thiab txo qis kev poob qis, tab sis ua rau luv luv -circuit tam sim no thiab yog li ntawd cov neeg kho tshuab kev nyuaj siab ntawm windings thaum lub sij hawm faults, uas yuav tsum tau muaj zog bracing. Kev tsa lub impedance tiv thaiv lub network los ntawm kev ua txhaum ntau dhau tam sim no tab sis degrades kev tswj hwm thiab ua rau cov khoom poob. Qhov kev ua kom zoo yog li ntawd nyob ntawm qhov kev ua txhaum theem, qhov ntev feeder, thiab rhiab heev ntawm cov khoom sib txuas. Rau 630 kVA chav tsev pub rau lub tsheb npav 0.4kV nrog cov ntsiab lus ntawm lub cev muaj zog, tus nqi nyob ib ncig ntawm 6% yog qhov kev xaiv sib npaug; tus nqi kawg yuav tsum tau lees paub los ntawm luv luv - kev tshawb fawb ntawm lub network.

Load Adaptability ntawm qhuav-Type Design

Qhuav- hom transformers siv huab cua los yog resin rwb thaiv tsev thiab muaj nyob rau hauv cov tsev, qhov, thiab cov nroj tsuag sab hauv tsev uas tsis pub roj. IEC 60076-11 txhais lawv qhov kub thiab txias-nce txwv, thiab lub peev xwm thauj khoom yog nyob ntawm cov chav kawm rwb thaiv tsev: chav F tso cai rau 100 K qhov nruab nrab winding nce, chav H tso cai rau 125 K. Vim tias qhuav -hom units zam luv luv- lub sij hawm overloads nyob rau hauv lub thermal lub sij hawm 1} cov ntaub ntawv uas tsim nyog, . cov ntaub ntawv yuav tsum tau ua kom qhuav. Tus nqi impedance tseem cuam tshuam tus cwj pwm overload indirectly los ntawm kev faib tawm ntawm tsis muaj-load thiab load poob.

Yuav Ua Li Cas Qhia thiab Txheeb Xyuas Qhov Impedance

Cov lus qhia tshwj xeeb yuav tsum tau hais txog qhov impedance voltage ntawm qhov ntsuas tam sim no, qhov chaw kais dej, thiab qhov ntsuas kub, thiab daim ntawv tshaj tawm kev ntsuam xyuas niaj hnub yuav tsum qhia tus nqi ntsuas hauv kev tsim khoom (feem ntau ± 7.5% rau impedance ib IEC 60076-1). Thaum lub sijhawm ua haujlwm sib luag tau npaj tseg, qhov impedance ntawm cov units yuav tsum tau ua kom nruj dua, thiab theem-lub kaum sab xis ntawm impedance yuav tsum zoo ib yam li kom tsis txhob muaj cov dej ntws.

FAQ

6% impedance voltage txhais li cas hauv kev xyaum?

Nws txhais tau hais tias nrog rau theem nrab luv luv -circuited, 6% ntawm qhov ntsuas thawj qhov hluav taws xob tau ntsuas tam sim no. Lub zeem muag luv luv -circuit tam sim no yog li ntawm 16.7 npaug ntawm qhov ntsuas tam sim no, ua ntej qhov system impedance ntxiv.

Cov impedance puas tuaj yeem hloov pauv tom qab tsim khoom?

Tsis yog. Impedance yog kho los ntawm winding geometry, lem thiab disposition. Kev hloov pauv nws yuav tsum tau tsim kho dua tshiab, uas yog vim li cas tus nqi yuav tsum tau pom zoo nyob rau theem kev qhia tshwj xeeb.

Vim li cas ob transformers nyob rau hauv parallel xav tau impedance zoo sib xws?

Vim hais tias kev sib koom load yog inversely proportional rau impedance. Yog tias qhov impedances txawv ntau dua li ntawm 10%, qhov qis dua - impedance unit nqa load ntau dua thiab tuaj yeem ua kom sov.

Puas yog qhov siab dua impedance nce kev poob?

Lub load poob (tooj liab poob) yog ib feem ntawm impedance, yog li cov qauv tsim nrog impedance siab dua feem ntau muaj me ntsis load poob, tab sis cov reactive tivthaiv dominates thiab tsis nws tus kheej siv lub zog nquag.

Puas yog 630 kVA qhov qhuav qhuav tshaj plaws - hom ntsuas muaj?

Tsis yog. Qhuav- hom transformers muaj txog li ob peb MVA, tab sis 630 kVA yog ib qho kev ntsuam xyuas ntau heev rau lub tsev thiab kev faib khoom vim nws qhov loj me thiab qhov sib npaug zoo ntawm lub peev xwm thiab tus nqi.

Nyob rau hauv cov ntsiab lus, impedance voltage yog ib qho ntawm feem ntau consequential parameters ntawm ib tug 630 kVA 10kV qhuav- hom transformer: nws coordinates txhaum theem, voltage regulation thiab parallel ua hauj lwm. Tshwj xeeb nws txhob txwm tshaj tawm, nyob ib ncig ntawm 6% rau kev faib khoom raug cai, thiab txheeb xyuas qhov ntsuas tus nqi hauv daim ntawv tshaj tawm, tiv thaiv ob qho tib si transformer thiab lub network nws pub.