Fault Solution rau Excitation System ntawm Diesel Generator Teeb

Excitation system muab magnetic teb tam sim no rau lub rotor winding ntawm diesel generator.Nws lub luag haujlwm tseem ceeb yog khaws lub tshuab hluav taws xob hluav taws xob ntawm ib qib, tsim nyog faib lub zog reactive thiab txhim kho kev ua haujlwm ruaj khov ntawm lub zog hluav taws xob.Nws tuaj yeem pom tau tias kev tswj hwm thiab kev debugging qhov excitation system yog qhov tseem ceeb los xyuas kom muaj kev nyab xeeb ntawm kev tsim hluav taws xob.

Txawm li cas los xij, peb kuj paub tias txhua yam khoom siv yuav muaj teeb meem hauv kev ua haujlwm.Yuav kuaj xyuas sai li cas thiab tshem tawm qhov tsis raug yog lub luag haujlwm tseem ceeb thiab kev ua haujlwm ntawm cov neeg ua haujlwm tu, thiab lub zog excitation tsis muaj qhov zam.Yog li ntawd, tsab xov xwm no tham txog cov faults thiab countermeasures ntawm diesel generator excitation system.

1. Feem ntau faults thiab countermeasures ntawm diesel generator excitation system

1.1 excitation tsis ua hauj lwm

Thaum lub tshuab hluav taws xob tsis tuaj yeem tsim qhov pib voltage tom qab lub excitation system teeb meem excitation hais kom ua, uas yog hu ua excitation tsis ua hauj lwm.Vim hais tias muaj ntau yam qauv ntawm diesel generator excitation system, thiab muaj qhov sib txawv nyob rau hauv parameter teeb thiab teeb liab zaub.Piv txwv li, EXC9000 excitation system, thaum lub tshuab hluav taws xob davhlau ya nyob twg voltage tseem qis dua 10% ntawm lub tshuab hluav taws xob ntsuas hluav taws xob nyob rau hauv 10s, lub regulator zaub screen yuav qhia "excitation tsis ua hauj lwm" teeb liab.

Muaj ntau ntau qhov laj thawj rau kev ua tsis tiav ntawm kev tsim cov excitation, thiab feem ntau yog:

(1) Muaj qhov tsis pom zoo thaum pib tshuaj xyuas, xws li kev hloov pauv, kev hloov pauv hloov pauv, kev nyab xeeb lub rooj hloov pauv ntawm synchronous transformer, thiab lwm yam tsis raug kaw.

(2) Lub excitation Circuit Court yog faulty, xws li cov kab xoob los yog cov khoom puas.

(3) Regulator tsis ua haujlwm.

(4) tus neeg teb xov tooj tsis paub txog kev ua haujlwm, thiab lub sijhawm nias lub pob excitation luv luv, tsawg dua 5s.

Kev daws:

(1) Txheeb xyuas cov xwm txheej khau raj nruj me ntsis raws li cov txheej txheem, tshuaj xyuas txhua qhov txuas kom tsis txhob muaj kev cuam tshuam.

(2) Ua tib zoo saib xyuas.Yog tias koj xav tias qhov excitation Circuit Court tsis ua haujlwm, txiav txim los ntawm kev soj ntsuam qhov ua kom lub excitation contactor thiab lub suab ntawm rub-hauv.Yog tias tsis muaj suab nrov, tej zaum yuav ua rau lub voj voog tsis ua haujlwm;Yog hais tias nws yog ib tug regulator tsis ua hauj lwm, koj muaj peev xwm soj ntsuam qhov hloov qhov taw qhia lub teeb ntawm lub regulator board.Txawm hais tias lub teeb pom kev nkag mus ib txwm nyob, thiab yog tias lub teeb tsis raug, xyuas cov xaim hluav taws xob thiab seb puas yog tus tswv tsev hais kom ua.

(3) Tom qab cov cuab yeej kho dua tshiab, xyuas seb hom excitation ntawm tus txiv neej-tshuab interface puas tsim nyog, thiab rov pib lub tshuab los ntawm kev kho cov excitation hom lossis hloov cov channel.

(4) Ntau qhov kev ua tsis tiav tom qab kev kho thiab kho tau raug tso tseg los ntawm kev ua haujlwm dhau los.Yog tias koj ua siab ntev nco qab qhov koj tau txav mus los, koj tuaj yeem pom qee yam cim, xws li seb lub rotor thiab cov khoom siv hluav taws xob puas txuas rov qab.

2.2 Tsis ruaj tsis khov excitation

Thaum lub sijhawm ua haujlwm ntawm lub tshuab hluav taws xob, qhov kev hloov pauv ntawm excitation yog loj heev.Piv txwv li, cov ntaub ntawv kev khiav hauj lwm ntawm lub excitation system nce, tab sis qee zaum nws yog ib txwm thiab tsis xwm yeem, thiab kev hloov pauv ntawm qhov sib ntxiv thiab rho tawm tseem tuaj yeem ua tiav.

Cov laj thawj tshwm sim yog:

(1) Cov zis ntawm theem-hloov pulse tswj voltage yog txawv txav.

(2) Kev hloov pauv ib puag ncig thiab cov khoom cuam tshuam los ntawm kev co, oxidation thiab ua haujlwm tsis zoo.

Kev daws:

Rau thawj yog vim li cas, thawj zaug xyuas seb qhov excitation fais fab mov yog qhov qub, thiab xyuas seb tus nqi muab thiab qhov ntsuas tus nqi (generator voltage lossis excitation tam sim no) ua tiav los ntawm chav hloov kho yog qhov qub.

Rau qhov laj thawj thib ob, siv lub oscilloscope los soj ntsuam seb qhov kev hloov kho waveform puas tiav, thiab tom qab ntawd siv multimeter los xyuas seb qhov kev ua haujlwm ntawm thyristor puas zoo li qub.Hom kev ua tsis tiav no yuav tshwm sim thaum cov hlau vuam txheej txheem thiab cov yam ntxwv ntawm cov khoom hloov pauv, thiab kev saib xyuas thiab kev debugging yuav tsum tau ntxiv dag zog thiab hloov lub sijhawm.Cov teeb meem cuam tshuam tuaj yeem txo qhov tshwm sim ntawm qhov ua tsis tiav.

2.3 Qhov txawv txav de-excitation

Tom qab lub tshuab hluav taws xob diesel raug txiav tawm ntawm daim phiaj hluav taws xob, cov cuab yeej de-excitation yuav tsum ua kom cov hlau nplaum seem nyob hauv cov cuab yeej excitation kom sai li sai tau.Txoj kev demagnetization muaj xws li inverter demagnetization thiab tsis kam demagnetization.Yog vim li cas rau qhov tsis ua hauj lwm ntawm inverter demagnetization muaj xws li Circuit Court vim li cas, SCR tswj ncej tsis ua hauj lwm, txawv txav AC fais fab mov, thiab me me ua rau lub kaum sab xis ntawm lub inverse conversion theem.Yog li ntawd, kev daws teeb meem yog txhawm rau txhim kho kev saib xyuas txhua hnub, tu cov plua plav hauv cov khoom siv tsis tu ncua, thiab tom qab ntawd siv cov tshuaj txhuam hniav rau qhov de-excitation fracture, arc extinguishing grid thiab lwm qhov chaw los tiv thaiv lub mechanism ntawm jamming.

Yuav khaws cov excitation system ntawm lub tshuab hluav taws xob diesel nyob rau hauv qhov zoo, ntxiv rau kev ntxiv dag zog rau kev saib xyuas thiab kev tswj xyuas, kev tshem tawm plua plav tsis tu ncua, kev sim thiab kev sim, yuav tsum tau them nyiaj rau kev tsom xam thiab cov ntsiab lus ntawm kev ua txhaum ntau.Ib yam li cov phiaj xwm xwm txheej kub ntxhov, tshem tawm cov txheej txheem daws teeb meem thiab cov txheej txheem tuaj yeem txo lub sijhawm daws teeb meem thiab teeb tsa lub hauv paus kom ntseeg tau tias muaj kev nyab xeeb ntawm cov khoom siv roj av thiab txhim kho lub zog tsim hluav taws xob.