1. Kev txhais ntawm Transformer Impedance Voltage (Uk)
Nyob txawv teb chawstransformerkev xaiv, kev tsim kho substation thiab hluav taws xob hluav taws xob commissioning,Impedance voltage (Uk)yog ib qho tseem ceeb tshaj plaws kev tsis, thib ob tsuas yog rau voltage piv thiab rated peev. Nws tseem yog qhov yuav tsum tau tshuaj xyuas qhov ntsuas rau IEC thoob ntiaj teb cov qauv hluav taws xob hluav taws xob thiab kev pom zoo rau kev sib txuas sab nraud. Feem ntau cov kab hluav taws xob txawv teb chaws tsis ua tiav, kev tsis lees txais daim phiaj sib txuas, luv luv - Circuit Court tripping thiab cov khoom siv burnout yog tshwm sim los ntawm kev xaiv tsis raug ntawm impedance voltage.
Technically, impedance voltage yog hais txog qhov voltage siv rau thawj winding thaum lub thib ob winding ntawm lub transformer luv luv -circuited thiab cov thawj tam sim no mus txog qhov ntsuas tam sim no. Nws yog qhia raws li feem pua ntawm qhov ntsuas hluav taws xob, tseem hu ua luv - Circuit Court voltage lossis luv -circuit impedance.
Hauv cov ntsiab lus yooj yim:Qhov siab dua qhov impedance voltage, muaj zog dua tam sim no limiting muaj peev xwm thiab sab hauv tsis kam ntawm transformer; qhov qis dua qhov impedance voltage, qhov nyuaj ntawm qhov tso zis voltage, qhov loj dua qhov luv luv -circuit tam sim no, thiab lub zog ntawm kab sib chaws cuam tshuam.
Cov qauv qauv sib txawv raws li qib voltage: 10kV faib transformers feem ntau txais 4% lossis 4.5% Uk; 35kV fais fab transformers txais 7%, 8% lossis 10.5% Uk; loj-muaj peev xwm siab-voltage main transformers tuaj yeem ncav cuag 12% ~ 14%. Txawv tsis sib xws sib txawv kiag li txawv teb chaws daim phiaj ua hauj lwm tej yam kev mob.
2. Core Functions ntawm Transformer Impedance Voltage
2.1 txwv luv-Circuit Tam sim no thiab tiv thaiv daim phiaj khoom siv
Kev txwv luv luv -circuit tam sim no yog qhov tseem ceeb tshaj plaws ntawm impedance voltage. Feem ntau cov kab hluav taws xob txawv teb chaws hauv Africa, Southeast Asia thiab Middle East muaj cov kab hluav taws xob tsis muaj zog, cov cuab yeej tiv thaiv tsis tu ncua thiab nthuav dav, ua rau muaj kev pheej hmoo siab ntawm theem luv luv thiab hauv av luv luv. Yog tias qhov hluav taws xob impedance tsawg dhau, qhov luv luv - Circuit Court tam sim no yuav dhau mus deb tshaj qhov kev tawg ntawm Circuit Court breakers, fuses thiab cables, ua rau hloov tawg, cable burnout thiab substation blackout.
Kev teeb tsa impedance voltage kom zoo tuaj yeem txo qis tus nqi ntawm qhov txhaum tam sim no nyob rau hauv qhov kev zam ntawm cov khoom siv hluav taws xob, zoo heev txhim kho kev nyab xeeb thiab kev ua txhaum cai ntawm tag nrho lub zog hluav taws xob, uas yog lub hauv paus tseem ceeb rau kev xaiv hluav taws xob txawv teb chaws.
2.2 Stabilize Grid Voltage thiab Ncua Voltage Fluctuation
Cov chaw ua lag luam txawv teb chaws, mines thiab cov phiaj xwm tshiab lub zog tau nruab nrog ntau qhov kev cuam tshuam cov khoom xws li lub cev muaj zog loj thiab cov khoom siv hloov pauv zaus. Kev pib tam sim ntawm siab - cov cuab yeej hluav taws xob yuav ua rau muaj hluav taws xob poob qis, ua rau lub teeb flicker, khoom siv kaw, zaus hloov lub tswb thiab cov kab ntau lawm raug ncua.
Impedance voltage txiav txim qhov txawv hardness ntawm transformers. Tus nqi sib tw Uk tuaj yeem cuam tshuam qhov cuam tshuam, txwv tsis pub muaj hluav taws xob flicker thiab qhov hluav taws xob poob, ua kom ruaj khov lub zog hluav taws xob, thiab ua tau raws li IEC cov qauv hluav taws xob zoo rau cov haujlwm txawv teb chaws.
2.3 Ua kom muaj kev nyab xeeb Parallel Kev Ua Haujlwm ntawm Ntau Qhov Hloov Hloov
Dual lossis ntau qhov sib npaugtransformerkev lag luam yog dav saws nyob rau hauv txawv teb chaws lub nroog substations thiab loj muaj chaw ua si rau ncov load tswj thiab redundant thaub qab.Qhov sib npaug impedance voltage yog thawj qhov yuav tsum tau ua ua ntej rau kev ua haujlwm zoo sib xws.
Kev tsis sib haum xeeb Uk yuav ua rau tsis muaj qhov sib npaug ntawm cov khoom xa tawm, cov cua kub dhau ntawm ib feem ntawm cov hloov pauv thiab cov khoom siv hluav taws xob sab hauv. Ntev - lub sijhawm ua haujlwm tsis sib npaug yuav ua rau cov rwb thaiv tsev laus thiab kev pabcuam lub neej txo qis. Tsuas yog kev sib koom ua ke impedance voltage tuaj yeem paub qhov sib koom ua haujlwm raug thiab ruaj khov ua haujlwm sib luag.
2.4 Tshem tawm Harmonics thiab ua kom zoo zog zoo
Txawv teb chaws photovoltaic, cua zog thiab rectifier loads tsim ib tug loj tus naj npawb ntawm daim phiaj harmonics, ua rau daim phiaj muaj kuab paug thiab cuam tshuam nrog precision khoom lag luam. Tsim nyog impedance voltage muab cov nyhuv damping, txwv kev sib haum xeeb amplification thiab daim phiaj resonance txaus ntshai, thiab txo lub sij hawm ntev - kev puas tsuaj rau cov khoom siv fais fab.
3. Kev cuam tshuam ntawm impedance Voltage ntawm Overseas Grid Stability
3.1 Tus nqi qis Uk: nce luv luv-Kev pheej hmoo ntawm Circuit Court thiab tsis zoo ntawm daim phiaj ua txhaum
Rau cov kab hluav taws xob cais tawm txawv teb chaws, tawm - cov chaw nres tsheb hluav taws xob thiab cov hluav taws xob me me thiab nruab nrab- cov hluav taws xob faib hluav taws xob loj, qhov hluav taws xob impedance tsawg dhau yog qhov phom sij loj. Low Uk txhais tau hais tias me me sab hauv tsis kam ntawm lubtransformer. Thaum ib qho luv luv - Circuit Court txhaum tshwm sim, qhov txhaum tam sim no yuav nce siab, tshaj qhov muaj peev xwm tawg ntawm cov hloov pauv txawv teb chaws qub, ua rau kev tiv thaiv tsis ua haujlwm thiab loj- teev hluav taws xob tawm. Feem ntau cov teeb meem tsis sib haum xeeb thiab cov khoom siv hluav taws xob nyob hauv cov chaw tsim kho txawv teb chaws yog tshwm sim los ntawm kev xaiv tsis zoo impedance voltage.
3.2 Tus nqi siab Uk: Ua kom muaj hluav taws xob poob qis thiab txo cov khoom siv hluav taws xob tsawg
Impedance voltage tsis yog qhov siab dua qhov zoo dua. Qhov muag tsis pom kev xaiv siab -Uk transformers yuav ua rau muaj kev tiv thaiv sab hauv, ua rau pom tseeb qhov poob qis thiab nce tooj liab poob thaum lub sijhawm ua haujlwm puv -. Nyob rau txawv teb chaws ntev -siv fais fab kis tau tus mob thiab tej thaj chaw deb mining thaj chaw, Uk ntau dhau yuav ua rau lub davhlau ya nyob twg tsis tshua muaj hluav taws xob, cov khoom siv nyuaj pib, siv zog ntau dua thiab cov nqi khiav lag luam ntau dua, ua tsis tau raws li cov kev xav tau ntawm lub zog- txuag chaw nres tsheb txawv teb chaws.
3.3 Parameter Mismatch: Circulating Current thiab Grid Oscillation
Kev sib xyaw siv cov cuab yeej tshiab thiab qub los ntawm cov tuam txhab sib txawv yog muaj nyob rau hauv txawv teb chaws daim phiaj kho dua tshiab. Qhov sib txawv loj hauv impedance voltage yuav ua rau tsis tu ncua circulating tam sim no nyob rau hauv parallel transformers, uas ua rau cov cua kub txawv txav, muaj suab nrov thiab kab sib chaws qis - zaus oscillation, ua rau lub zog dynamic stability ntawm daim phiaj fais fab.
4. Cov xwm txheej txawv teb chaws-Raws li Uk Xaiv Cov Qauv (Kev Qhia Txog Kev Lag Luam Txawv Tebchaws)
General Civil & Commercial Distribution (10kV / 0.4kV): 4% lossis 4.5% Uk yog qhov kev xaiv tseem ceeb, ntsuas qhov ntsuas tam sim no txwv lub peev xwm thiab qhov hluav taws xob ruaj khov, nrog rau kev ua haujlwm siab thiab kev lees txais qhov project txawv teb chaws.
Chaw Ua Si Chaw Ua Si & Mining Chaw Ua Si nrog Impact Loads: 6% ~ 8% nruab nrab thiab siab impedance voltage yog pom zoo kom ntxiv dag zog rau luv luv -circuit tam sim no limiting muaj peev xwm thiab tiv thaiv tsis tu ncua load cuam tshuam.
35kV High-Voltage Substations & Main Fais Fab Fais Fab: 10.5% tus qauv Uk tau txais kev pom zoo kom phim IEC daim phiaj sib txuas cov qauv thiab ua tau raws li qib siab - theem kab sib chaws ruaj khov thiab kev tiv thaiv relay.
Photovoltaic & Cua Fais Fab Tshiab Zog Sib Txuas Txuas: Ua kom muaj zog impedance voltage suppresses harmonic oscillation thiab adapts rau lub volatile fais fab tiam yam ntxwv ntawm lub zog tshiab.
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