Txoj Kev Txiav Txim thiab Kev Tiv Thaiv rau Peb-theem Unbalance (4)
(4) Yuav ua li cas txhim kho peb-theem Unbalance
1. Ua tib zoo saib xyuas qhov tsim nyog faib ntawm peb theem loads
Ntawm qhov kev faib tawm ntawm peb-theem loads, cov neeg ua haujlwm hluav taws xob yuav tsum tau sau thiab sau cov ntaub ntawv cuam tshuam kom zoo hauv kev ua haujlwm tiag tiag, txhawm rau ua tiav lub xeev uas tuaj yeem kwv yees cov hluav taws xob thauj khoom mus rau qee yam. Qhov thib ob, qhov teeb meem kev faib tawm ntawm qhov zoo ntawm peb-theem tshuav nyiaj li cas tuaj yeem ua tiav los ntawm kev txhim kho cov khoom sib npaug.
Nyob rau hauv qee qhov chaw uas qhov tsawg-voltage peb-theem plaub-xaim system tau txais yuav, cov khoom siv hluav taws xob reactive rau kev kho qhov tsis sib npaug tam sim no tuaj yeem raug ntxiv los daws cov teeb meem ntau yam tshwm sim los ntawm qhov tshwm sim tsis sib xws hauv daim phiaj hluav taws xob uas feem ntau tshwm sim. Xws li cov cuab yeej tuaj yeem tsis tsuas yog them nyiaj rau lub zog reactive zog tab sis kuj kho cov nyhuv ntawm qhov tsis sib npaug ntawm qhov tam sim no. Tsis tas li ntawd, raws li qhov sib txawv ntawm lub sijhawm thauj khoom hauv qhov xwm txheej tiag tiag, kev hloov kho kom tsim nyog ntawm txoj kev xaim kuj tseem muaj qee yam cuam tshuam rau qhov tsim nyog faib ntawm peb-theem load.
2. Txoj kev kho rau qhov tsis sib npaug tam sim no hauv peb theem load
Raws li txoj cai them nyiaj ntawm qhov tsis sib npaug tam sim no thiab kev poob siab, thaum lub sijhawm txiav txim siab, feem ntau yog peb theem ungrounded unbalanced loads, ces txhua tus ntawm lawv tuaj yeem txuas nrog tib lub resistor thiab capacitor. Yog li ntawd, nyob rau hauv cov kev taw qhia ntawm unbalanced tam sim no kev tswj susceptance nyiaj them txoj kev xav, qhov sib npaug ntawm cov khoom sib txawv tuaj yeem txheeb xyuas los txiav txim siab cov nyiaj them rov qab rau cov nqi ntawm cov theem thiab cov txheeb ze hauv av. Thaum lub transformer faib yuav tsum tau them nyiaj rau qhov tsis sib npaug tam sim no, cov hauv qab no yuav tsum txaus siab. Ua ntej, nws yuav tsum raug sau tseg tias tsoomfwv tam sim no yuav tsum muaj ob lub ntsiab lus, ib qho yog los them cov nqi hluav taws xob, thiab lwm qhov yog los kho qhov tsis txaus ntawm peb theem tam sim no, uas ua ke txiav txim siab lub zog reactive uas yuav tsum tau them nyiaj.
Qhov thib ob lub ntsiab lus yog tias nyob rau hauv qhov project tsim, yuav tsum tau txais ib tug tag nrho-muaj peev xwm tswj txoj kev, uas yuav tsum tau txawv los ntawm inductance them nyiaj kom tsis txhob loj overcompensation. Qhov thib peb taw tes yog xav txog tias lub load yuav hloov nrog lub sij hawm. Raws li cov yam ntxwv no, cov nyiaj them poob haujlwm kuj tseem yuav raug kho kom tsim nyog raws li qhov kev hloov pauv ntawm kev thauj khoom. Lub ntsiab lus thib plaub yog qhov txwv ntawm kev hloov lub sij hawm ntawm cov cuab yeej hloov pauv thiab cov khoom siv them nyiaj, thiab nws yog ib qho tsim nyog los tswj cov phiaj xwm kev ua kom zoo tshaj plaws txhua hnub thaum tsim. Nyob rau hauv luv luv, thaum teem lub proportional adjustment factor, nws yog tsim nyog los xav txog ob lub hwj chim yam txwv thiab cov overcompensation txwv.
3. Ntxiv peb-theem load nrhiav kom tau thiab hloov kho
Nws tseem yog ib qho tseem ceeb heev kom tsis tu ncua qhib kev tshawb pom ntawm peb-theem loads. Tom qab qhov tsim nyog faib thiab tswj kev ua raws li peb theem, cov tuam haujlwm tseem ceeb yuav tsum teeb tsa kev tshuaj xyuas. Qhov sib npaug ntawm hluav taws xob tsis tuaj yeem ua tiav, nws tsuas yog sim ua kom tiav qhov sib npaug sib npaug. Hauv kev sim ua haujlwm tiag tiag, txhua lub tuam tsev yuav tsum ua qhov ntsuas qhov ntsuas qhov sib npaug uas tsim los ntawm lub xeev thiab cov tuam haujlwm muaj feem cuam tshuam raws li tus qauv, thiab sau cov ntaub ntawv tshaj lij thiab txheeb xyuas cov txiaj ntsig kev xeem. Lub sijhawm kuaj xyuas cov load tam sim no ntawm txhua theem, txhawm rau nrhiav pom qhov tsis sib xws ntawm qee qhov peb theem hauv lub sijhawm.
Thaum pom cov khoom uas muaj peev xwm muaj kev nyab xeeb nyob rau hauv cov txheej txheem tshuaj xyuas, lawv yuav tsum tau kho thiab hloov kho raws sijhawm. Kev ceev faj yuav tsum tau nce ntxiv rau qhov chaw uas tsis muaj teeb meem tshwm sim thaum lub sijhawm tshuaj xyuas. Tom qab kev soj ntsuam, nws tsis yog tsuas yog tsim nyog los npaj thiab txheeb xyuas cov ntaub ntawv, tab sis kuj yuav tsum tau muab cov lus teb raws sij hawm. Cov lus tawm tswv yim no feem ntau yog hais txog cov kev hloov kho uas yuav tsum tau ua rau peb-theem inferred los ntawm cov txiaj ntsig kev xeem, thiab muaj peev xwm kwv yees siv cov cuab yeej tshiab hauv peb-theem. Los ntawm kev tshawb pom tsim nyog thiab kev ntsuas qhov tob ntawm qhov kev tshawb pom, peb tuaj yeem zam qhov tshwm sim ntawm qhov tshwm sim tsis sib haum mus rau qhov loj tshaj plaws thiab txo qhov tshwm sim ntawm hluav taws xob xwm txheej.
Peb yog ib qho ntawm cov chaw muag khoom loj ntawm lub zog ntsuas thiab ntsuas dej. Peb cov khoom yog cov khoom ntse, xws li ntse wifi electric meter, wifi dej meter, lora electric meter, lora dej meter, tej thaj chaw deb tswj fais meter, tej thaj chaw deb tswj dej ntsuas, thiab lwm yam. Yog hais tias koj tab tom nrhiav rau tej 'meter', thov koj xav tias dawb rau tiv tauj peb.
