Thaum ua haujlwm ntxiv -siab-voltage (EHV) cov cuab yeej hluav taws xob, ua raws li cov qauv kev lag luam thoob ntiaj teb yog txoj haujlwm nruj. Rau lub hwj chim transformers ntsuas txog li 750kV, ua tiav qhov Kev Ntsuas Hluav Taws Xob nrog Kev Tso Tawm Ib Ntu (PD) Kev Ntsuas raws liIEC 60076-3: CovthiabTS EN 60270ua hauj lwm raws li qhov tseeb ntiaj teb no benchmark rau rwb thaiv tsev ncaj ncees.
Txawm li cas los xij, kev teeb tsa 750kV siab -voltage test voj uas ua tiav qhov kev ntsuas nruj, kev nkag siab zoo, thiab kev ntsuas ntsuas cov txheej txheem teev tseg los ntawm IEC 60270 yog ib txoj haujlwm zoo tshaj plaws hauv engineering. Yog tias cov cuab yeej ua tsis tau raws li cov qauv no, cov ntaub ntawv xeem yuav raug tsis lees paub los ntawm cov chaw siv hluav taws xob thiab cov tub ceev xwm kab hluav taws xob.
Hauv qab no, peb rhuav tshem cov kev cai tseem ceeb uas yuav tsum tau ua kom tiav tag nrho IEC 60270 ua raws li 750kV transformer induced hipot testing.
1. Cov Ncauj Lus Tsis Txaus Ntshai (Clause 10)
IEC 60270 Clause 10 qhia meej meej txog cov txheej txheem pov thawj rau cov suab nrov tom qab hauv pem teb txwv thaum lub sij hawm siab - qhov ntsuas hluav taws xob ib feem. Tus txheej txheem tswj hwm tias lub suab nrov ntawm cov cuab yeej ntsuas yuav tsum qis dua li qhov teev tseg PD lees txais cov txheej txheem ntawm Cov Khoom Ntsuas (DUT).
- Qhov teeb meem:Thaum lub Hoobkas lees txais lossis ntawm - qhov chaw ua haujlwm ntawm 750kV fais fab transformer, qhov kev tso cai sab hauv PD yog qhov tshwj xeeb qis (feem ntau mus txog 50pC lossis tsawg dua nyob ntawm cov khoom siv hluav taws xob). Yog tias koj qhov kev sim teeb tsa muaj lub suab nrov hauv pem teb ntawm 20pC lossis 30pC, nws yuav npog qhov tsis xws luag hauv cov rwb thaiv tsev me me, ua rau muaj kev puas tsuaj loj heev - dhau.
- Tus Qauv Ua Raws Cai:Kev ua raws cai tiag tiag yuav tsum muaj kev sim ntsuas nrog kev lees paub qhov kev tso tawm ib nrab ntawmTsawg dua lossis sib npaug li 10pC(los yog qis dua) nyob rau hauv tag nrho 750kV loading. Ua tiav qhov no xav tau cov cuab yeej cuab tam zoo tshaj plaws, xws li ntau - qib aluminium grading rings thiab rigid shielding tubes, hloov cov huab cua ionization pib deb dhau qhov siab tshaj qhov ntsuas hluav taws xob.
2. Waveform Purity thiab tag nrho Harmonic Distortion txwv
IbIEC 60076-3: Cov, alternating voltage waveform siv thaum lub sij hawm induced overvoltage test yuav tsum tuav ib tug ze ntawm -zoo meej sinusoidal profile. Tus txheej txheem tswj hwm nruj txwv ntawm tag nrho cov kev sib haum xeeb tsis sib haum xeeb (THD) txhawm rau tiv thaiv cov hluav taws xob tsis sib xws thoob plaws lub tshuab hluav taws xob windings.
[PWM / IGBT Square-Wave Inverter] --->Txhaj siab -Frequency Spikes & Severe THD (Tsis yog-COMPLIANT)
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[Pure Sine Wave Linear Amplifier] --->Muab ze rau-Sinusoidal Output zoo nrog THD Tsawg dua lossis sib npaug rau 1% (COMPLIANT)
- Cov cuab yeej ntawm Standard Variable Frequency Supplies:Basic Pulse-Width Modulation (PWM) cov khoom siv hluav taws xob tsim cov square ntse-wave switching edges. Cov kab hluav taws xob sib sib zog nqus no (dv / dt) txhaj tshuaj loj heev - lub suab nrov zaus rov qab rau hauv qhov ntsuas ntsuas, ua rau cov PD ntes tsis muaj txiaj ntsig.
- Kev daws rau kev ua raws cai:Ib tug tag nrho raws li system yuav tsum deployntshiab sine wave linear fais fab amplification tshuab. Los ntawm kev ua kom lub waveform distortion tus nqi ntawmTsawg dua lossis sib npaug li 1%, lub hauv paus ua kom txaus siab rau lub waveform purity mandates ntawm ob qho tib si IEC 60076-3 thiab IEC 60270, tiv thaiv rhiab ntsuas ntsuas los ntawm cov suab nrov sib haum xeeb.
3. Simultaneous Multi-Channel PD Calibration thiab ntsuas
IEC 60270 txhais cov txheej txheem nruj rau kev ntsuas tag nrho cov ntsuas ntsuas ua ntej kuaj. Tus txheej txheem pulse generator yuav tsum txhaj cov nqi uas paub (piv txwv li, 5pC, 10pC, 50pC) mus rau hauv cov terminals ntawm cov khoom kuaj kom ntsuas qhov ntsuas ntawm PD detector.
- Ntau-Channel Synchronization:Rau loj 750kV peb-theem fais fab transformers, ib qho kev ntsuas -channel tsis txaus. Kev rwb thaiv tsev tsis zoo hauv cheeb tsam sib sib zog nqus hauv theem B windings yuav ploj mus ua ntej mus txog ib qho sensor ntawm theem A.
- Configuration raws li nram no:Kev ua raws cai yuav tsum muaj siab - ceev, synchronizedmulti-channel digital PD ntesua ke nrog siab siab -voltage coupling capacitors thiab damping resistors. Qhov kev teeb tsa no ua kom ntseeg tau tias ib feem ntawm cov pulses raug ntes thoob plaws txhua theem thiab cov bushings ib txhij, muab tag nrho cov visibility thiab raug cai traceability rau qhov kawg xeem ntawv pov thawj.
Summary : Ib Txoj Cai Ua Raws Li Txoj Cai Kev Xeem
Kev nyab xeeb kev pom zoo los ntawm cov tub ceev xwm kab sib chaws thoob ntiaj teb xav tau qhov kev sim ua haujlwm nruj me ntsis ib puag ncig kho vajtse- qib ua raws. Software-raws li digital filtering tsis tuaj yeem kho lub suab nrov siab -voltage voj lossis distorted fais fab mov waveform raws li kev soj ntsuam thoob ntiaj teb.
PebMOEORW-WPB268 750kV Ib Feem Tshem Tawm-Free AC Withstand Voltage Test Systemyog engineered precisely kom tau raws li cov qauv nruj. Kev sib xyaw ua ke ntawm lub zog hluav taws xob, ib qho ultra- suab nrov qis hauv pem teb ntawm Tsawg dua lossis sib npaug rau 10pC, thiab kev sib xyaw ua ke IEC 60270 multi- channel ua, nws muab qhov chaw ruaj khov, muaj ntawv pov thawj rau kev ntsuam xyuas cov khoom siv hluav taws xob tseem ceeb.
