Qhov kev sib txuas tsis muaj zog tshaj plaws hauv kev tiv thaiv relay yog lub transformer nyob rau hauv lub hwj chim system voltage.Nyob rau hauv lub voj voog voltage, nws yooj yim rau malfunction thaum lub sij hawm ua hauj lwm.Lub transformer nyob rau hauv qhov voltage plays lub luag hauj lwm tseem ceeb heev nyob rau hauv ib txwm ua hauj lwm ntawm lub hwj chim system.Kev ua haujlwm, txawm hais tias tsis muaj ntau yam khoom siv nyob rau hauv cov txheej txheem thib ob ntawm lub tshuab hluav taws xob hluav taws xob, thiab cov txheej txheem xaim tsis yog qhov nyuaj, yuav muaj xws li thiab lwm yam txhaum hauv cov txheej txheem.Cov kev ua txhaum uas tshwm sim nyob rau hauv lub thib ob Circuit Court ntawm lub voltage transformer tsis tuaj yeem tsis quav ntsej, thiab tej zaum yuav ua rau muaj qhov tshwm sim loj dua, xws li kev ua haujlwm tsis zoo thiab tsis kam lees ntawm cov cuab yeej tiv thaiv.Raws li qhov xwm txheej dhau los, qhov thib ob Circuit Court ntawm voltage transformer yog nyob rau hauv tus txheej txheem Cov kev ua tsis tiav yog feem ntau xav txog hauv qab no:
1. Qhov taw tes grounding txoj kev ntawm qhov thib ob Circuit Court ntawm voltage transformer yog txawv ntawm qhov xwm txheej.Qhov thib ob Circuit Court ntawm voltage transformer qhia tsis muaj qhov nruab nrab hauv av lossis ntau qhov chaw hauv av.Secondary grounding tseem hu ua Secondary virtual grounding.Qhov laj thawj tseem ceeb ntawm qhov no yog ntxiv rau qhov teeb meem ntawm daim phiaj hauv av hauv substation, qhov teeb meem tseem ceeb dua nyob rau hauv cov txheej txheem ntawm kev xaim.Qhov thib ob grounding ntawm qhov voltage sensor yuav tsim ib qho voltage ntawm nws thiab hauv av kab sib chaws.Qhov hluav taws xob no yog txiav txim siab los ntawm qib ntawm qhov tsis sib xws ntawm qhov voltages thiab qhov kev tawm tsam tsim los ntawm kev sib cuag nrog ib leeg, thiab qhov hluav taws xob tsim los ntawm kev sib cuag nrog cov kab sib chaws hauv av tib lub sijhawm, nws tseem yuav raug superimposed ntawm qhov voltage ntawm txhua qhov kev tiv thaiv ntaus ntawv, uas yuav ua rau ib tug tej yam amplitude tus nqi hloov ntawm txhua theem voltage thiab lwm yam theem hloov mus rau ib tug tej yam, uas yuav ua rau lub impedance thiab directional Cheebtsam rau malfunction thiab tsis kam mus..
2. Qhov voltage ntawm qhov qhib daim duab peb sab ntawm lub voltage transformer yog txawv txav nyob rau hauv lub voj.Qhov voltage ntawm qhov qhib daim duab peb sab ntawm lub voltage transformer yuav raug txiav nyob rau hauv lub voj.Muaj cov laj thawj mechanical.Qhov tshwm sim ntawm luv luv Circuit Court nyob rau tib lub sij hawm muaj feem cuam tshuam nrog qee yam kev siv ntawm cov hluav taws xob.Txhawm rau ua kom tiav tus nqi tas li ntawm xoom-ib theem voltage, nyob rau hauv kev tiv thaiv ntawm lub transformer thiab lub tsheb npav electromagnetic, lub tam sim no-txheej tsis kam ntawm relay nyob rau hauv lub voltage yog luv luv-circuited.Qee tus neeg txawm siv qhov me me relay.Qhov tshwm sim yog Nws yuav zoo heev txo qhov thaiv qhov tshwm sim ntawm qhov qhib delta voltage hauv lub voj.Txawm li cas los xij, thaum muaj qhov txhaum hauv av hauv lub chaw nres tsheb lossis ntawm qhov hluav taws xob, qhov xoom kab ke voltage yuav loj heev, thiab impedance ntawm lub voj voog load yuav me me.Qhov tam sim no yuav loj dua, thiab lub kauj ntawm lub relay tam sim no yuav overheat, uas yuav ua rau lub rwb thaiv tsev puas, thiab tom qab ntawd ib qho luv luv Circuit Court yuav tshwm sim.Yog hais tias qhov luv luv-circuit mob nyob rau lub sij hawm ntev, nws yuav ua rau lub coil hlawv.Nws tsis yog qhov tsis yooj yim rau qhov hluav taws xob transformer tawg ntawm cov hluav taws kub.
3. Secondary voltage poob ntawm voltage transformers Qhov thib ob voltage poob ntawm voltage transformers yog ib tug classic teeb meem uas feem ntau tshwm sim nyob rau hauv voltage tiv thaiv systems.Lub ntsiab yog vim li cas rau qhov teeb meem no yog tias qhov kev ua tau zoo ntawm ntau hom khoom tawg tsis zoo tag nrho..Thiab qhov tsis zoo ntawm cov txheej txheem thib ob.
4. Siv txoj kev tshuaj xyuas kom raug
4.1 Kev soj ntsuam raws li txoj kev no yog siv cov kev tshuaj ntsuam xyuas thiab kev debugging kom pom lub hauv paus ua txhaum.Nws yog nqa tawm nyob rau hauv kev txiav txim ntawm kev soj ntsuam sab nraud, rwb thaiv tsev tshuaj xyuas, ruaj nqi tshuaj ntsuam xyuas, lub hwj chim mov kev xeem, kev tiv thaiv kev soj ntsuam, thiab lwm yam. Txoj kev no yog tsuas yog siv rau qhov tsis ua hauj lwm ntawm microcomputer tiv thaiv.Nws yog nyob rau hauv tus txheej txheem ntawm kev tuav cov xwm txheej uas muaj teeb meem nrog kev txav los yog logic.
4.2 Siv tag nrho cov txheej txheem xeem Lub hom phiaj tseem ceeb ntawm txoj kev no yog los xyuas seb qhov kev txiav txim siab thiab lub sijhawm ua haujlwm ntawm cov cuab yeej tiv thaiv zoo li cas, thiab feem ntau nws tuaj yeem siv sijhawm luv luv los tsim qhov txhaum.Thiab txheeb xyuas lub hauv paus ntawm qhov teeb meem, yog tias muaj qhov txawv txav, ces muab lwm txoj hauv kev los kuaj xyuas.
4.3 Txoj kev tshuaj xyuas rov qab yog qhov xwm txheej ntawm microcomputer relay tiv thaiv tester thiab lub kaw lus hluav taws xob tsis tuaj yeem nrhiav lub hauv paus ua rau muaj kev sib tsoo hauv lub sijhawm luv luv, yuav tsum tau them nyiaj rau qhov tshwm sim ntawm qhov xwm txheej.Saib rau pem hauv ntej los ntawm theem mus rau theem kom txog thaum pom cov hauv paus ntsiab lus.Txoj kev no feem ntau siv thaum kev tiv thaiv tsis ua haujlwm.
4.4 Siv tag nrho cov ntaub ntawv tsis raug muab los ntawm microcomputer relay tiv thaiv tester, thiab ua raws li cov kauj ruam kom raug.
(1) Siv tag nrho cov ntaub ntawv tsis raug thiab cov ntaub ntawv teev sijhawm.Cov ntaub ntawv xwm txheej, cov duab ua txhaum cai, thiab cov khoom siv teeb pom kev zoo ntawm microcomputer relay tiv thaiv tester yog lub hauv paus tseem ceeb rau kev sib tsoo.Kev txiav txim kom raug raws li cov ntaub ntawv muaj txiaj ntsig yog tus yuam sij los daws qhov teeb meem.
(2) Tom qab qee qhov kev tiv thaiv kev sib tsoo tshwm sim, qhov ua rau tsis tuaj yeem nrhiav tsis tau raws li cov lus qhia ntawm lub teeb liab.Los yog tsis muaj teeb meem qhia tom qab lub Circuit Court breaker mus ncig ua si, thiab nws tsis tuaj yeem (txhais tau) kev sib tsoo ntawm tus txiv neej lossis khoom siv sib tsoo.Qhov xwm txheej no feem ntau tshwm sim los ntawm kev saib xyuas tsis txaus ntawm cov neeg ua haujlwm, kev ntsuas tsis txaus, thiab lwm yam laj thawj.Cov xwm txheej uas tib neeg tsim yuav tsum tau ua raws li qhov tseeb txhawm rau txheeb xyuas thiab tsis txhob nkim sijhawm.
Post lub sij hawm: Dec-29-2021