Ntau lub disc-shaped insulators yog dai ntawm ib kawg ntawm high-voltage hlau txuas ntauwd kom nce qhov kev ncua deb. Lawv feem ntau yog ua los ntawm iav los yog ceramic los yog roj hmab, uas yog hu ua insulators. Txhawm rau tiv thaiv cov plua plav ntab thiab lwm yam pa phem los ntawm adhering rau lub insulator nto thiab tsim ib txoj hauv kev, nws yog flashover thiab tawg ntawm ob qho kawg ntawm insulator, piv txwv li creepage Yog li ntawd, nce qhov deb ntawm qhov chaw, uas yog, qhov deb ntawm creepage, thiab cov tso tawm deb raws li qhov chaw insulating, uas yog, qhov kev ncua deb, hu ua creepage nrug Creepage nrug=nto nrug / siab tshaj qhov system voltage Raws li cov pa phem sib txawv, qhov nce qhov deb feem ntau yog 31 mm / kV hauv hnyav hnyav. thaj chaw.
Zero tus nqi insulator yog hais txog lub insulator uas nws muaj peev xwm faib ntawm ob qhov kawg ntawm insulator nyob ze lossis sib npaug rau xoom thaum lub sijhawm ua haujlwm.
Kev cuam tshuam ntawm tus nqi xoom lossis qis tus nqi insulator: lub rwb thaiv tsev ntawm cov kab hluav taws xob nyob ntawm qhov insulator. Vim yog kev tsim khoom tsis xws luag lossis cov teebmeem sab nraud, xws li cov khoom siv hluav taws xob tsis zoo, cov hluav taws xob tsis zoo, thiab lwm yam. Thaum cov hluav taws xob tiv thaiv hluav taws xob tsis tu ncua txo qis, nws yog hu ua xoom lossis qis rwb thaiv tsev. Lub insulator yog du, uas tuaj yeem txo qhov capacitive reactance ntawm cov xov hlau thiab txo qhov poob ntawm tam sim no.
Nrog rau kev tsim kho ntawm UHV AC / DC kab hauv Suav teb thiab kev txhim kho txuas ntxiv ntawm cov kev xav tau rau cov neeg kho tshuab lub zog, qhov teeb meem ntawm cov khoom siv hluav taws xob ntshiab tom qab insulator tau dhau los ua qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv UHV DC converter chaw nres tsheb, uas yog feem ntau xav txog hauv:
① Teeb meem rwb thaiv tsev sab nraud. Nrog rau qhov tsis zoo ntawm kev khiav hauj lwm ib puag ncig, lub peev xwm los tiv thaiv cov pa phem flashover ntawm porcelain post insulator tsis txaus. Rau UHVDC, ntshiab porcelain post insulators yuav tsum tau loj creepage nrug thiab qauv, thaum siab dhau lawm ncej insulators yog ib qho nyuaj rau ua kom muaj zog dabtsi yog khoov thiab seismic zog.
② Av qeeg tsis kam. Cov khoom siv high-voltage nrog hluav taws xob porcelain post insulator li insulating ib feem yog hu ua hluav taws xob porcelain high-voltage khoom luv luv. Qhov teeb meem seismic ntawm cov cuab yeej zoo li no tau nyuaj los daws qhov zoo. Hauv xyoo 2008 Wenchuan av qeeg, feem ntau ntawm kev puas tsuaj ntawm cov cuab yeej siv hluav taws xob yog vim qhov tawg ntawm cov plooj (porcelain bushing). Rau UHV DC system, ncej insulator siv rau smoothing reactor yuav tsum muaj tag nrho qhov siab ntawm 12m thiab ib tug txhawb nqa ntawm 40t, thaum lub converter chaw nres tsheb nyob rau hauv Chuxiong, Yunnan, thaj av qeeg. Obviously, nws yog ib qho nyuaj heev rau porcelain post insulator kom tau raws li qhov yuav tsum tau muaj seismic.
③ Kev tsim cov teeb meem zoo. Porcelain post insulator yog qhov nyuaj heev rau kev tsim khoom vim nws cov txheej txheem nyuaj, cov khoom siv, cov teeb meem zoo raw khoom thiab lwm yam kev txwv. Raws li kev tshawb nrhiav ntau, kev tshawb nrhiav kev sib tsoo ua haujlwm pab pawg ntawm high-voltage pillar porcelain insulators ntawm yav dhau los tiam thiab kev xa mus ua haujlwm Department of State Power Corporation suav cov xwm txheej ntawm cov plooj (porcelain pillar insulators) raws li cov laj thawj, thiab tuaj txog ntawm xaus lus tias qhov tawg ntawm ncej porcelain insulators yog tshwm sim los ntawm feem ntau ntawm cov khoom zoo vim li cas.
