Q: Peb nyob ntawm 90% voltage thiab hnov ​​​​qhov ntse "Snap" (flashover) hauv lub tank. Qhov system tripped. Peb puas yuav tsum qhib GIS thiab kho tam sim no?

A: Tsis tas li. Qhov no hu ua Self-Clearing Flashover.

Txoj Cai "Peb-Strike" (IEEE/IEC):

1. Strike 1: Yog tias muaj teeb meem tshwm sim, tso lub kaw lus thiab rov pib qhov kev sim.

2. Kev soj ntsuam: Yog tias qhov thib ob flashover tshwm sim ntawm qhov siab dua qhov ua ntej, nws txhais tau hais tias hluav taws xob "hlawv" ib qho me me, ntse burr lossis particle. GIS tau huv dua.

3. Strike 2/3: Yog hais tias lub flashover tshwm sim ntawm qhov qub lossis qis dua, koj muaj qhov teeb meem tiag tiag (ib qho tawg tawg lossis qhov teeb meem loj ntawm cov qauv). Nias qhov kev xeem tam sim.

Kev Txiav Txim Siab: Ib qho kev hloov pauv ib zaug ua tiav los ntawm kev ua tiav 1-feeb tuav ntawm qhov hluav taws xob tag nrho feem ntau tau txais raws li IEC 62271-203.

Peb ua li cas xaiv qhov ntsuas hluav taws xob rau qhov kev sim "ntawm-"?

Q: Kuv GIS ntsuas rau 220 kV. Kuv puas yuav tsum sim nws ntawm tib qhov hluav taws xob uas lub Hoobkas siv thaum lawv Hom Kev Xeem?

A: TSIS MUAJ. Field test voltages qis dua kom tsis txhob "Tshaj -kev ntxhov siab" cov cuab yeej uas twb tau xa thiab ua haujlwm lawm.

"80% Txoj Cai":

1. Kev Xeem Lub Hoobkas: GIS raug kuaj ntawm cov chaw tsim khoom ntawm 100% ntawm tus qauv tiv thaiv qib (piv txwv li, 460 kV rau 220 kV system).

2. Field Test: Peb feem ntau siv 80% ntawm lub Hoobkas ntsuas hluav taws xob (piv txwv li, 368 kV).

3. Duration: Feem ntau 1 feeb ntawm qib 80%.

Vim li cas 80%? Nws yog qhov sib npaug. Nws yog qhov siab txaus los nrhiav kev sib dhos yuam kev lossis kev thauj mus los, tab sis qis txaus uas nws yuav tsis ua rau muaj kev laus ntawm cov insulators yog tias muaj qhov tsis zoo me me.