Lub Hoobkas cable ib zaug xa tawm 220 kV XLPE nruas nrog cov ntaub ntawv qhia tawm ib nrab ntawm qhov huv si - kom txog rau thaum tus neeg yuav khoom rov- sim ntawm cov sib txawv AC hipot pawg thiab cov ntawv nyeem picocoulomb dhia. Qhov tsis xws luag tsis tau txav mus; kuaj transformer muaj. Qhov ntawd yog qhov sib txawv ntawm qhov sib txawv ntawm qhov tsis yog ib feem ntawm qhov ntsuas hluav taws xob hloov pauv thiab cov pa hluav taws xob feem ntau cov kev cob qhia twb muaj lawm.
Ob leeg nce voltage rau lub zog zaus tiv taus kev ua haujlwm. Tus qauv high voltage test transformer - hlau- cased roj hom lossis ib qho yooj yim qhuav module - yog tsim los ua pov thawj dielectric zog: tuav rated kev nyuaj siab, mus txawv tebchaws ntawm kev puas tsuaj, txav mus. Nws tus kheej rwb thaiv tsev muaj peev xwm emit me me nyob rau hauv pulses los ntawm cov roj khoob, bushings, los yog winding kev nyuaj siab. Ntawm 50 kV lub suab nrov tsis cuam tshuam. Ntawm 150 kV nrog 5 pC kev lees paub txwv, cov "ghost signals" zaum saum toj ntawm txhua yam khoom sim ua tau tsim, thiab koj qhov IEC 60270 nqi nyeem ntawv poob lub ntsiab lus.
Ib qho kev tso tawm dawb (tsis muaj -PD / PD dawb) qhov chaw yog tsim los rau lwm txoj hauv kev. Huazheng's insulating-lub tog raj kheej roj immersed uas tsis yog ib feem tso tawm units lub hom phiaj Tsawg dua los yog sib npaug li 3-10 pC ntawm 100% rated voltage ntawm 10-150 kV chav kawm (ib JB / T9641), nrog waveform distortion nyob rau hauv 3% - nyob ntsiag to txaus hais tias spikes los ntawm cov tsheb thauj mus los, los ntawm kev ntsuas cua tsis yog los ntawm exciter. SF6 insulated PD dawb teeb xws li HZGTU kab thawb cov cuab yeej hauv pem teb mus rau 1-3 pC ntawm qhov ntsuas hluav taws xob nyob rau hauv ib puag ncig ib puag ncig, uas yog vim li cas GIS thiab GIL cov chaw tsim khoom nyiam cov pa roj- tsis muaj qhov tso tawm ib nrab ntawm cov khoom siv sib xyaw ua ke: me me hneev taw, tsis muaj roj tuav, thiab lub suab nrov hauv pem teb kom muaj peev xwm loj.
Cov pab pawg muag khoom feem ntau sib piv cov catalog kV thiab kVA nkaus xwb. Rau PD txais, ntxiv tag nrho cov kab ke PD - coupling capacitor, PD cais lim, divider, thiab leads suav ntau npaum li qhov ntsuas qhov ntsuas ntawm qhov hloov pauv. Modular stacks nrog ntev unshielded khiav ib txwm tsis audit txawm thaum lub transformer ib leeg yog "PD dawb."
Lwm qhov kev sim transformers tseem yeej ntawm tus nqi thiab kev txav mus los rau niaj hnub tiv thaiv qhov ntsuas hluav taws xob qhov twg PD tsis nyob hauv daim ntawv xeem. Thaum FAT, hom kev xeem, lossis daim phiaj kev yuav khoom thov rau cov ntaub ntawv pC qib ntawm transformers, switchgear, los yog cov twj paj nruag windings, kev lag luam ntxeev: ib qho tsis tseeb dhau los ntawm qhov nrov nrov nqi ntau dua li kev hloov kho.
Huazheng Electric tsim PD dawb HV kuaj tshuab los ntawm compact HZJW roj- lub tog raj kheej teeb (xws li . 15 kVA / 150 kV) los ntawm HZGTU SF6 GIS-oriented systems mus rau 200 kV thiab 1000 kV chav kawm configurations {{9}, CE txij thaum xa tawm {{0} 8} CE Scope voltage, capacitive load, thiab yuav tsum tau tom qab pC ua ntej quoting; resonance lossis lim xaiv yuav tsum phim koj IEC 60270 kev ntsuas saw, tsis yog lub npe ntawm lub tshuab hloov pauv.