Dab tsi yog qhov tsis siv neeg reclosing thiab dab tsi yog hom rov qab?

Kev siv dav thiab siv tau zoo los tiv thaiv- kev ntsuas kev sib tsoo ntawm cov kab xa hluav taws xob thiab hluav taws xob. Thaum muaj teeb meem kab tshwm sim, tom qab qhov kev tiv thaiv relay tawm mus rau lub Circuit Court breaker, cov khoom siv rov qab tsis siv neeg rov kaw lub Circuit Court breaker tom qab lub sijhawm luv luv. Feem ntau, cov kab txhaum (xws li xob laim, cua puas, thiab lwm yam) yog ib ntus. Tom qab lub Circuit Court breaker mus ncig ua si, qhov kev ua tau zoo ntawm cov kab hluav taws xob (insulators thiab air gaps) tuaj yeem rov qab tau, thiab rov qab rov qab tuaj yeem ua tiav, yog li txhim kho kev ntseeg siab ntawm cov khoom siv hluav taws xob. Hauv ob peb kis, qhov txhaum yog nyob mus ib txhis. Tom qab cov khoom siv rov ua haujlwm tsis siv neeg rov ua haujlwm, qhov kev tiv thaiv relay rov qab los txheeb xyuas qhov ua rau thiab tshem tawm nws ua ntej lub zog rov qab los. Feem ntau, qhov rov qab sai dua tom qab ib txoj kab tsis raug mus ncig, qhov txiaj ntsig zoo dua. Qhov tsawg kawg nkaus tso cai ncua sij hawm rov qab yog 0.15 txog 0.5 vib nas this. Qhov siab dua qhov ntsuas hluav taws xob ntawm cov kab, lub sijhawm ntev ntawm kev rwb thaiv tsev deionization. Qhov kev vam meej ntawm kev rov qab tsis siv neeg sib txawv nyob ntawm tus qauv kab, theem voltage, huab cua huab cua, thiab hom kev ua txhaum loj. Raws li kev txheeb cais los ntawm Suav lub zog hluav taws xob, feem ntau nws nce mus txog 60% txog 90%. Lwm qhov kev tiv thaiv kev sib tsoo uas siv dav hauv kev siv hluav taws xob yog kev hloov pauv hluav taws xob tsis siv neeg, uas feem ntau siv sijhawm 0.2 txog 0.5 vib nas this. Nws yuav tsum tau nqis peev tsawg thaum muab cov txiaj ntsig kev lag luam tseem ceeb hauv kev tswj hwm lub zog ib txwm muaj.

Cov khoom siv rov qab tsis siv neeg yog cov cuab yeej siv tsis siv neeg uas tuaj yeem txuas rov qab Circuit Court breakers uas tau tripped vim yog qhov tsis raug raws li xav tau. Kev ua haujlwm ntawm lub zog hluav taws xob qhia tau hais tias feem ntau ntawm kev ua txhaum ntawm cov kab nyiaj siv ua haujlwm yog "ntev", nrog cov kev ua txhaum tas mus li feem ntau suav txog tsawg dua 10%. Yog li ntawd, tom qab luv luv - Circuit Court txhaum raug tshem tawm los ntawm kev tiv thaiv relay, lub arc yuav cia li tua, thiab feem ntau, lub rwb thaiv tsev ntawm luv luv - qhov hluav taws xob taw tes tuaj yeem rov qab tau. Yog li ntawd, cia li thim rov qab Circuit Court breakers tsis tsuas yog txhim kho kev nyab xeeb thiab kev ntseeg siab ntawm cov khoom siv hluav taws xob thiab txo cov hluav taws xob poob, tab sis kuj tseem txhim kho qhov hloov pauv ntawm lub zog hluav taws xob, ua kom muaj peev xwm kis tau tus mob siab - cov kab hluav taws xob, thiab tuaj yeem kho cov kev tawm dag zog tsis zoo los ntawm cov hluav taws xob hluav taws xob lossis cov khoom siv tiv thaiv relay. Yog li ntawd, tsis siv neeg reclosing yuav tsum tau siv rau cov overhead kab.

(1) Txhim kho qhov kev ntseeg siab ntawm lub hwj chim thiab txo cov kab hluav taws xob, tshwj xeeb tshaj yog rau ib qho - cov kab hluav taws xob nrog ib qho hluav taws xob;

(2) Nyob rau hauv siab -voltage kis kab, rov qab tuaj yeem txhim kho kev ruaj ntseg ntawm kev ua haujlwm sib luag ntawm lub zog hluav taws xob;

(3) Hauv kev tsim thiab tsim cov kab hluav taws xob, qee zaum, xav txog lub luag haujlwm ntawm kev rov qab, kev tsim kho ob - cov kab hluav taws xob tuaj yeem raug ncua kom txuag tau peev;

(4) Nws kuj tseem tuaj yeem kho qhov yuam kev tsis zoo tshwm sim los ntawm kev ua haujlwm tsis zoo ntawm Circuit Court breaker lossis kev tiv thaiv relay yuam kev.

Cov txiaj ntsig kev lag luam rov qab yuav tsum ntsuas los ntawm kev poob nyiaj txiag los ntawm kev siv hluav taws xob tsis tau rov qab. Vim hais tias kev nqis peev hauv cov khoom siv rov qab tau qis heev thiab lawv txoj haujlwm tau txhim khu kev qha, lawv tau siv dav hauv cov tshuab hluav taws xob. Txawm li cas los xij, txhua yam muaj ob sab. Thaum reclosing yog siv ua ke nrog kev ua txhaum tas mus li, nws kuj coj qee qhov tsis zoo, xws li:

(1) cuam tshuam lub zog hluav taws xob rau lwm qhov cuam tshuam;

ua rau cov kev khiav hauj lwm ntawm Circuit Court breaker hnyav dua, vim nws yuav tsum cuam tshuam qhov luv luv -circuit tam sim no ob zaug hauv lub sijhawm luv luv. Qhov teeb meem no yuav tsum tau txiav txim siab rau cov roj Circuit Court breakers, vim hais tias thaum lub sij hawm thawj qhov kev mus ncig, cov roj lub rwb thaiv tsev lub zog yog txo vim yog arcing nyhuv. Qhov thib ob mus txawv tebchaws tom qab reclosing tshwm sim nyob rau hauv no unfavorable tej yam kev mob ntawm txo rwb thaiv tsev. Yog li ntawd, tom qab txais yuav rov qab, lub peev xwm tawg ntawm cov roj hluav taws xob hluav taws xob tseem yuav txo qis mus rau qhov sib txawv (feem ntau txog li 80%). Yog li, hauv cov tshuab hluav taws xob nrog luv luv - lub peev xwm ntawm lub voj voog, cov xwm txheej tsis zoo no feem ntau txwv kev siv rov qab.

(1) Raws li hom kev thim rov qab, nws tuaj yeem muab faib ua hom tshuab thiab hluav taws xob.

(2) Raws li txoj kev rov qab ua haujlwm ntawm lub tshuab hluav taws xob, nws tuaj yeem muab faib ua peb -theem, ib zaug-theem ua ke rov qab, thiab lwm yam.

(3) Raws li tus naj npawb ntawm cov haujlwm, nws tuaj yeem muab faib ua ib zaug -theem thiab ob zaug-theem (ntau-theem) rov qab.

Raws li kev ua haujlwm, nws tuaj yeem muab faib ua ib zaug -sab fais fab mov rov qab thiab ob - sab fais fab mov rov qab. Muab ob npaug rau-sab fais fab mov rov qab tuaj yeem muab faib ntxiv rau hauv qhov rov qab tsis muaj- qhov kev lees paub qhov hluav taws xob, rov qab los ntawm kev txheeb xyuas synchronous, thiab tsis yog - synchronous reclosing.

ZW32-24 sab nraum lub tshuab nqus tsev ncej-mounted Circuit Court breaker(tom qab no hu ua Circuit Breaker) yog ib qho kev tswj thiab kev tiv thaiv cov cuab yeej siv hauv 24kV, 50Hz peb-theem AC nruab nrab-voltage distribution network. Nws feem ntau yog siv rau kev hloov thiab cuam tshuam cov load tam sim no, overload tam sim no, thiab luv luv -circuit tam sim no hauv cov kab xa hluav taws xob. Nws yog tsim rau siv nyob rau hauv substations thiab industrial thiab mining enterprise faib tshuab rau kev tiv thaiv thiab tswj lub hom phiaj.

Qhov no Circuit Court breaker nta ib tug ncej-mounted, qhuav- hom qauv nrog txhim khu kev qha rwb thaiv tsev, hluav taws xob lub neej ntev, thiab txij nkawm- ua haujlwm dawb. Nws yog tshwj xeeb tshaj yog haum rau cov ntawv thov uas yuav tsum tau ua haujlwm nquag. Nws kuj yog qhov zoo tshaj plaws rau kev teeb tsa hauv cov kab hluav taws xob nyob deb nroog nrog kev tu thiab kho muaj peev xwm. Lub Circuit Court breaker tseem tuaj yeem ua haujlwm raws li cov khoom siv hluav taws xob hauv daim phiaj hluav taws xob, thiab thaum nruab nrog lub tshuab hluav taws xob, nws tuaj yeem ua tiav kev faib khoom siv hluav taws xob.