Q: Kuv pom cov neeg nqa kaum ob lub coils hnyav (reactors) rau kev xeem GIS. Vim li cas peb tsis tuaj yeem siv lub siab -voltage test transformer zoo li peb ua rau CTs?

A: Nws los ntawm Capacitance thiab Lub Zog. GIS busbar yog qhov tseem ceeb ntawm coaxial capacitor loj heev.

Physics:

1. Txhawm rau kom muaj zog 220 kV GIS (uas muaj lub peev xwm siab) ntawm 50 Hz, tus qauv hloov pauv yuav tsum tau muab ntau pua Amperes ntawm kev them tam sim no.

2. Qhov teeb meem: Lub transformer thiab lub hwj huam mov yuav tsum yog lub tsev loj thiab hnyav ntau tons. Nws yog tsis yooj yim sua kom thauj qhov no mus rau ib qhov chaw.

3. Kev daws teeb meem (Series Resonance): Los ntawm kev sib txuas ib qho inductor (reactor) nyob rau hauv series nrog GIS capacitance, peb tsim ib Resonant Circuit Court.

4. Cov txiaj ntsig: Ntawm qhov resonant zaus (f=1 / (2π√LC)), lub inductor thiab capacitor "tso tseg" ib leeg tawm. Lub hwj chim mov tsuas yog muab lub zog me me ntawm lub zog poob rau qhov tsis kam.

Qhov tshwm sim: Koj tuaj yeem tsim 400 kV thoob plaws GIS siv lub tshuab hluav taws xob me me 220V / 380V uas haum rau hauv lub tsheb.

Qhov "Kev Ntsuam Xyuas Kev Kho Mob" yog dab tsi thiab vim li cas nws thiaj li ua ntej?

Q: Cov txheej txheem kuaj pom tias peb yuav tsum zaum ntawm 20%, 50%, thiab 80% voltage ua ntej mus rau qhov ntsuas tag nrho. Vim li cas nkim sij hawm? Vim li cas ho tsis mus ncaj 100%?

A: Kev Ntsuas Kev Kho Mob yog qhov tseem ceeb tshaj plaws "kev tu" kauj ruam. Nws yog tsim los cawm GIS los ntawm nws tus kheej cov khib nyiab installation.

Qhov "Dhia Particle" Trap:

1. Txawm hais tias lub tsev pheeb suab puas huv si, ib qho me me ntawm cov plua plav hlau lossis cov plaub hau yuav nyob hauv.

2. Yog hais tias koj mus ncaj nraim mus rau 100% Voltage, cov particle yuav dhia ncaj qha mus rau hauv siab - cheeb tsam kev ntxhov siab thiab ua rau ib tug mus tas li, puas tsuaj arc (ntoo) los ntawm lub insulator.

3. Lub Cev Muaj Zog: Los ntawm kev tuav ntawm qhov hluav taws xob qis (piv txwv li, 50% rau 5 feeb), qhov hluav taws xob ua rau cov khoom no "dance" maj mam. Qhov no coj lawv mus rau Particle Traps (tsawg- thaj chaw hauv qab ntawm lub tank), qhov chaw uas lawv nyob nyab xeeb ntawm cov neeg xyuas pib.

Cov ntsiab lus: Cov cua txias tsis ntsuas qhov rwb thaiv tsev; nws ntxuav cov rwb thaiv tsev siv hluav taws xob.