Umehluko phakathi kwe-zinc oxide arrester kanye ne-elbow arrester

Umehluko phakathiisibambi se-zinc oxidefuthiisibambi sendololwane

1. (1) Isimiso sokusebenza se-valve-type arrester:
Uma uhlelo lujwayelekile, igebe lenhlansi lihlukanisa ukumelana kwepuleti levalvu nebhasi elisebenzayo, ukuze lingashisi ukumelana kwepuleti levalvu ngenxa yamandla akhiqizwa ekumelana kwepuleti levalvu yi-voltage yokusebenza.
Uma i-voltage ebhasini elisebenzayo idlula inani layo le-voltage yokuqhekeka, igebe le-spark lizophulwa bese liholela umbane ukuthi uvuze emhlabeni ngokumelana ne-valve plate. Ngalesi sikhathi, inani lokumelana lokumelana ne-valve plate lizokwehla ngokuzenzakalelayo ukuze kuncishiswe ukumelana emaphethelweni alo amabili. Kwakheka ingcindezi esele.
Ngemva kokuba umbane unyamalale, i-voltage esebenza ekuphikisweni kwepuleti le-valve iyi-voltage yemvamisa yamandla. Ngalesi sikhathi, inani lokumelana lokumelana kwepuleti le-valve lizokhula ngokuzenzakalelayo, linciphise imvamisa yamandla e-freewheeling ukuze kushukunyiswe i-arc ukuthi icime ngokushesha nangokuthembekile.

(2) Isivikelo se-valve sakhiwe yizikhala eziningi ze-spark kanye nama-resistors e-valve plate ngokulandelana.
Ibanga eliphakathi kwesikhala senhlansi lincane, insimu kagesi ifana nensimu kagesi efanayo, isici se-volt-second siyisicaba, futhi ukuhlanganiswa kokufakwa kokushisa kulula ukukubona. Ngaphezu kwalokho, izikhala eziningi zenza i-arc ihlukaniswe lapho imvamisa yamandla iqhubeka nokugeleza. Uma kuqhathaniswa ne-arc ende, i-arc emfushane kulula ukuyisika, futhi ikhono lokubuyisa amandla okufakwa kokushisa kwesikhala liyathuthuka.
Ukuba khona kokumelana kwepuleti le-valve kugwema amagagasi anqamulayo angafaneleki ekufakweni kwe-insulation. Ukungalungi kwayo kuyenza ibonise ukumelana okuphansi lapho idlula umbane ukuze inciphise i-voltage eseleyo ye-arrester futhi ithuthukise ukusebenza kokuvikela; lapho idlula i-frequency yamandla i-freewheeling, ikhombisa ukumelana okuphezulu futhi i-voltage ihlala njalo ukuze inciphise i-freewheeling yamandla futhi ithuthukise ukusebenza kokucima kwe-arc.

2. (1) Isimiso sokusebenza se-zinc oxide arrester:
Ngaphansi kwesenzo se-voltage yokusebenza, ugesi ogeleza nge-valve ye-ZnO ungaphansi kakhulu kwe-1mA (ingxenye eyinhloko ugesi othwala amandla), olingana nomshini wokuvikela futhi ngeke ushise i-valve, ngakho-ke ugesi osebenzayo ungahlukaniswa ngaphandle kwegebe lochungechunge.
Uma i-voltage esetshenziswa ku-valve ye-ZnO idlula inani elithile (i-voltage yokuqala yokusebenza i-U1mA), kuzovela "ukuvula". Ngemva "kokuvula", ukumelana kwe-valve ye-ZnO kuncane kakhulu, futhi i-voltage esele ihlobene nomsinga ogeleza kuyo. Akubalulekile kangako.
Uma i-voltage esetshenzisiwe yehla ngaphansi kwe-voltage yokusebenza, i-"on" yepuleti ye-valve ye-ZnO iyaphela, okulingana ne-insulator, ngakho-ke akukho i-freewheeling ye-frequency yamandla.
Lesi yisona sizathu esenza i-MOA ikwazi ukufeza ukugeleza okungenamthungo ngaphandle kokushintshashintsha kwe-freewheel. (Ugesi wombani uba yisivikelo esikhathini esidlule, ngakho-ke ugesi wombani kuphela odlula epuletini le-valve ye-ZnO)
Uma kuqhathaniswa nama-valve e-silicon carbide SiC, ama-valve e-ZnO anezici ezifanelekile ze-volt-ampere ezingezona eziqondile.

(2) Uma kuqhathaniswa ne-arrester yendabuko eyakhiwe nge-SiC valve disc kanye ne-series gap, i-zinc oxide gapless arrester inezinzuzo ezilandelayo:
①Isakhiwo esilula, esifanele ukukhiqizwa okuzenzakalelayo okukhulu, usayizi omncane, isisindo esilula kanye nezindleko eziphansi.
② Ukusebenza kokuvikela okuphezulu. Ngenxa yokuthi i-valve ye-ZnO inezici ezinhle kakhulu ze-volt-ampere, i-voltage eseleyo iphansi; ingakhipha amandla phakathi nesikhathi sonke sokuphelelwa yi-voltage, futhi akukho spark, ngakho-ke akukho ukubambezeleka kwesikhathi sokukhishwa, futhi inezici ezinhle zokuphendula kwamagagasi amakhulu, ikakhulukazi ezifanelekela ukuvikelwa kwe-GIS kweziteshi ezifakwe igesi kanye nezinhlelo ze-DC.
③Ikhono elinamandla lokubekezelela izenzo eziphindaphindwayo, limunca kuphela amandla e-over-voltage, asikho isidingo sokumunca amandla ahambayo.
④Umthamo omkhulu wokugeleza. Umthamo wokugeleza ngeyunithi ngayinye yevalvu ye-ZnO uphindwe kane kuya kahlanu kunevalvu ye-SiC. Ingasetshenziswa njengesivikelo sokusekelayo sokusetshenziswa kwamandla kagesi angaphezulu kwangaphakathi.
⑤Ukumelana okuhle kwamabala. Njengoba kungekho sikhala sochungechunge, inkinga ye-voltage yokukhipha engazinzile yesikhala sezinhlansi zochungechunge ngenxa yokungcola okungalingani ebusweni besikhwama se-porcelain ingagwenywa, futhi kulula ukukhiqiza izibambi ezilwa nokungcola kanye nezihlanza bukhoma. (Azithinteki ukungcola kwendawo)