Grounding kuj txee

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Nrog txoj kev loj hlob sai ntawm daim phiaj hluav taws xob hauv nroog thiab nyob deb nroog, kev hloov pauv loj tau tshwm sim hauv cov qauv hluav taws xob hluav taws xob, thiab cov kev faib hluav taws xob uas muaj cov kab hluav taws xob tau tshwm sim.Lub hauv av capacitance tam sim no tau nce sharply.Thaum ib qho kev ua txhaum hauv av ib zaug tshwm sim hauv qhov system, muaj tsawg dua thiab tsawg dua qhov ua txhaum.Kev siv cov kev tiv thaiv hauv av tsis yog tsuas yog hloov mus rau txoj kev loj hlob tseem ceeb thiab hloov cov kev cai ntawm kuv lub teb chaws daim phiaj hluav taws xob, tab sis kuj txo qhov rwb thaiv tsev ntawm cov khoom siv hluav taws xob xa mus los ntawm ib lossis ob qib, txo kev nqis peev ntawm tag nrho cov phiaj xwm hluav taws xob.Txiav tawm qhov txhaum, suppress lub resonance overvoltage, thiab txhim kho kev nyab xeeb thiab kev ntseeg siab ntawm lub hwj chim system.

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Tam sim no, qhov nruab nrab point grounding txoj kev los ntawm kev tiv thaiv tau raug sau rau hauv cov kev cai ntawm kev lag luam fais fab.Kev lag luam hluav taws xob tus qauv DL / T620-1997 "Kev Tiv Thaiv Kev Tiv Thaiv Kev Tshaj Tawm thiab Kev Ruaj Ntseg ntawm AC Hluav Taws Xob Hluav Taws Xob" teev nyob rau hauv Tshooj 3.1.4: "5 ~ 35KV feem ntau yog tsim los ntawm Kev xa hluav taws xob thiab kev faib hluav taws xob uas muaj cov kab hluav taws xob, thaum ib leeg. -phase hauv av txhaum muaj ib tug loj capacitive tam sim no, lub low-resistance grounding txoj kev yuav siv tau, tab sis kev cia siab rau ntawm lub hwj chim mov, qhov cuam tshuam ntawm transient voltage thiab transient tam sim no ntawm cov khoom siv hluav taws xob thaum lub sij hawm faults, thiab cuam tshuam rau kev sib txuas lus Relay kev tiv thaiv kev cai. thiab kev ua haujlwm hauv zos, thiab lwm yam. "Tshooj 3.1.5 teev tseg: "5KV thiab 10KV fais fab kev faib tshuab thiab lub tshuab hluav taws xob cog hluav taws xob, thaum tib theem av txhaum capacitor tam sim no me me, txhawm rau tiv thaiv kev puas tsuaj rau cov khoom siv xws li resonance, qhov sib txawv, I arc grounding overvoltage, thiab lwm yam. ., tuaj yeem grounded nrog kev ua haujlwm siab. "

Rau kev tsim thiab xaiv cov txee tiv thaiv, thov kuj xa mus rau: DL / 780-2001 Distribution System Neutral Grounding Resistor Neutral Grounding Method yog ib txoj hauv kev uas cuam tshuam txog qib rwb thaiv tsev ntawm cov kab thiab cov khoom siv, kev cuam tshuam kev sib txuas lus, kev tiv thaiv relay thiab lub zog hluav taws xob network kev ruaj ntseg. Vim tias muaj cov teeb meem dav dav ntawm kev ntseeg siab thiab lwm yam, cov khoom siv hluav taws xob ntawm kuv lub teb chaws txoj kev faib tawm thiab kev lag luam loj thiab kev lag luam mining txawv.Yav dhau los, feem ntau ntawm lawv siv hom kev ua haujlwm ntawm qhov tsis muaj qhov nruab nrab ntawm qhov nruab nrab thiab grounded los ntawm arc suppression coil.Nyob rau hauv xyoo tas los no, vim yog kev txhim kho ntawm lub zog hluav taws xob thiab kev siv hluav taws xob ntau ntxiv, qee lub xeev thiab nroog cov phiaj xwm hluav taws xob tau txhawb nqa kev ua haujlwm ntawm kev tiv thaiv hauv av.