1. Cov qauv ntawm cov insulator yog dab tsi? Nws ua li cas?
Nws yuav tsum muaj lub zog rwb thaiv tsev txaus thiab lub zog txhua yam, thaum muaj kev tiv thaiv txaus rau kev yaig ntawm cov tshuaj tsis huv, thiab tuaj yeem hloov mus rau qhov kev hloov pauv ntawm cov huab cua ib puag ncig, xws li qhov cuam tshuam ntawm qhov kub thiab av noo hloov ntawm nws tus kheej.
2. Qhov kev ncua deb yog dab tsi? Dab tsi yog leakage ratio?
A: Kev ncua deb thiab qhov dej ntws tawm yog qhov tshwj xeeb ntawm cov rwb thaiv tsev sab nraud. Qhov kev ncua deb ntawm cov paug tawm raws li qhov chaw rwb thaiv tsev sab nrauv yog qhov kev ncua deb ntawm hluav taws xob, los yog hu ua creepage nrug, hu ua qhov kev nce siab. Qhov kev ncua deb ntawm cov dej xau sib npaug los ntawm cov txiaj ntsig zoo sib faib los ntawm kab hluav taws xob yog qhov xau nrug, uas yog, λ=KL / U
Qhov twg λ yog qhov kev ncua deb; K yog tus coefficient zoo; L yog qhov kev ncua deb; U yog kab voltage.
3. Dab tsi yog flashover? Dab tsi ua rau cov pa phem flashover?
A: Thaum cov pa roj los yog kua dielectric nyob ib ncig ntawm cov khoom rwb thaiv tsev tawg, qhov tshwm sim ntawm cov paug tawm raws li cov khoom siv rwb thaiv tsev yog hu ua flashover.
Muaj ntau cov khoom qias neeg nyob rau saum npoo ntawm cov plooj (porcelain insulators) hauv cov chaw qias neeg. Thaum ntub, cov khoom qias neeg no yuav tsim cov yeeb yaj kiab ua kua rau ntawm cov plooj (porcelain), uas yuav txo qhov voltage ntawm cov plooj (porcelain insulation) thiab ua rau lub flashover voltage tsawg heev. Qhov no yog vim li cas vim li cas porcelain rwb thaiv tsev yog ib qho yooj yim rau flashover nyob rau hauv qias neeg thiab ntub dej. Av av thiab dej ntws yog qhov tsim nyog rau av flashover, porcelain rwb thaiv tsev tsuas yog qias neeg thiab tsis ntub yuav tsis ua rau flashover.
4. Yuav ua li cas kom tsis txhob muaj kuab paug ntawm insulator flashover hauv substation?
A : (1) Ua kom cov rwb thaiv tsev yooj yim. Xws li nce tus naj npawb ntawm cov khoom insulator, nce qhov kev ncua deb ntawm qhov chaw, kom ua tau raws li qhov kev ncua deb uas tau teev tseg hauv kev faib tawm cov pa phem.
(2) Txhim kho kev ntxuav. Porcelain rwb thaiv tsev nyob rau hauv qhov chaw qias neeg yuav tsum tau ntxuav tsis tu ncua kom lub ntsej muag ntawm cov plooj (porcelain insulation) huv si thiab tiv thaiv kom txhob muaj pa phem. Kev tso dej nyob hauv dej yog ib txoj hauv kev zoo.
(3) Siv cov xim tsis muaj hmoov av. Thaum qhov sib piv zoo ntawm cov porcelain rwb thaiv tsev nyob rau hauv qhov chaw qias neeg tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua thiab kev ua haujlwm tu yuav tsum tau txo qis, cov roj silicone thiab cov khoom siv hauv pem teb feem ntau siv los ua kom muaj kuab paug siab thiab tiv thaiv kev ua pa phem flashover.
(4) Siv lub tes tsho semiconductor insulator thiab silicone roj hmab insulator.
