Yog tias koj tau ua haujlwm nyob ib puag ncig lub zog hluav taws xob ib ntus, muaj feem yuav yog koj tau khiav mus rau 35kV roj-immersed peb-theem ob-winding ntawm-load kais-hloov transformer - feem ntau hu ua SZ series lossis qee yam zoo sib xws. Cov transformers no yuav tsis zoo li flashy, tab sis lawv yog ib feem ntawm kev ua kom nruab nrab -voltage networks ruaj khov thiab txhim khu kev qha. Lawv txoj haujlwm tseem ceeb? Stepping voltage down thaum tseem ua kom cov zis tsis tu ncua, txawm tias thaum lub load hloov tas li.
Vim li cas cov Transformers thiaj li siv dav
Ib qho laj thawj uas lawv vam khom yog cov roj- raus tsim. Mineral roj ua raws li ob qho tib si rwb thaiv tsev thiab qhov nruab nrab cua txias, uas pab lub transformer kov cov cua sov kom zoo thaum tuav lub zog dielectric kev ua tau zoo. Hauv qhov tiag -kev ua haujlwm hauv ntiaj teb, qhov ntawd tseem ceeb heev - tshwj xeeb tshaj yog nyob rau hauv qhov xav tau ib puag ncig.
Qhov peb -theem qauv yog qhov zoo tagnrho rau kev siv hluav taws xob thiab kev lag luam vim tias nws tuav cov khoom sib npaug thiab ua kom lub zog xa khoom zoo. Kev teeb tsa nws tus kheej yog qhov yooj yim heev: ib qho siab -voltage winding thiab ib qho qis dua -voltage winding. Feem ntau, cov chav nyob no nqis zog los ntawm 35kV mus rau 10kV, 6kV, lossis zoo sib xws tis voltages.
Tab sis ua ncaj ncees, qhov tshwj xeeb uas ua rau cov transformers sawv tawm yog ntawm -load kais hloov pauv, lossis OLTC.
Tsis txhob kaw lub transformer los kho qhov voltage, cov neeg tsav tsheb tuaj yeem hloov cov kais dej thaum lub tsev tseem muaj zog. Feem ntau, qhov kev hloov pauv yog ib yam zoo li ± 4 × 2.5%, nyob ntawm tus qauv tsim. Qhov kev hloov pauv ntawd dhau los ua qhov tseem ceeb heev thaum daim phiaj muaj kev ntxhov siab - hnyav kev lag luam xav tau, kev sib kis ntev, lossis kev hloov pauv hluav taws xob txuas ntxiv tuaj yeem ua rau muaj hluav taws xob hloov pauv. OLTC pab txhim kho cov kev hloov pauv no kom tsis txhob cuam tshuam kev pabcuam.
Thiab nyob rau hauv niaj hnub daim phiaj hluav taws xob, qhov ntawd yog qhov zoo nkauj heev.
Qhov twg koj mam li pom lawv
Cov transformers no nyob txhua qhov chaw thaum koj pib saib xyuas.
Nyob rau hauv nroog thiab nyob deb nroog substations, lawv yog cov hauv paus caj qaum ntawm lub zos faib network. Lawv nqis zog rau thaj chaw nyob, cov tsev lag luam, thiab cov neeg siv khoom me me. Txij li thaum lub zog xav tau hloov pauv txhua hnub - thaum sawv ntxov pib peaks, yav tsaus ntuj cov chaw nyob, kev xav tau tam sim ntawd - OLTC tsis tu ncua pab tswj cov qib voltage ruaj khov.
Cov chaw muaj kev cia siab rau lawv hnyav heev thiab. Steel mills, tshuaj nroj tsuag, mining hauj lwm - qhov chaw uas loj loj motors, crushers, twj tso kua mis, los yog arc rauv - feem ntau muaj heev heev load fluctuations. Ib qho kev hloov pauv uas tuaj yeem tuav cov viav vias yam tsis muaj kev tsis ruaj khov yog tsim nyog nws qhov hnyav hauv kub.
Cov roj- raus siv los kuj pab nyob rau hauv ib puag ncig hnyav. Plua plav, cua sov, vibration ... cov chav no yog tsim los mus ntaus.
Koj tseem yuav pom lawv nyob rau hauv cheeb tsam substations txuas siab dua -voltage transmission systems to local distribution grids. Thiab nrog lub zog tauj dua tshiab sai sai, lawv tau dhau los ua qhov tseem ceeb dua. Cua ua liaj ua teb thiab cov nroj tsuag hnub ci feem ntau txuas los ntawm 35kV systems, qhov twg voltage tuaj yeem hloov pauv nyob ntawm huab cua. Ntawm -load voltage regulation pab ua kom cov kab sib chaws ruaj khov dua thaum tsim cov zis hloov pauv tsis tau xav txog.
Cov phiaj xwm loj loj siv lawv ib yam nkaus - tsev kho mob, tshav dav hlau, cov chaw zov me nyuam, cov kab tsheb ciav hlau, cov chaw lag luam. Yeej nyob txhua qhov chaw ruaj khov, tsis muaj kev cuam tshuam lub zog yog qhov tseem ceeb.
Vim li cas Engineers nyiam ua hauj lwm nrog lawv
Voltage stability yog tej zaum qhov zoo tshaj plaws.
Los ntawm kev kho cov kais dej kom zoo thaum lub sijhawm ua haujlwm, cov tshuab hloov pauv no pab kom tsis txhob muaj nyob rau hauv -voltage thiab tshaj -voltage tej yam kev mob uas tuaj yeem ua rau cov khoom siv qis qis lossis txo cov kev ua haujlwm zoo. Qhov ntawd ib leeg ua rau lawv muaj txiaj ntsig zoo kawg hauv kev faib khoom siv niaj hnub no.
Lawv kuj paub txog qhov poob qis thiab kev ua haujlwm ruaj khov. Feem ntau cov qauv tsim muaj peev xwm zam dhau ib ntus dhau qhov xwm txheej zoo, uas ntxiv lwm txheej ntawm kev ntseeg siab thaum lub sijhawm xav tau siab tshaj plaws.
Cov chav nyob niaj hnub no feem ntau zoo kaw thiab nruab nrog kev tiv thaiv zoo li:
Buchholz relays
winding kub ntsuas
roj ntsuas kub ntsuas
Cov cuab yeej siv siab
Yog li thaum kev saib xyuas tseem ceeb heev, lawv tsis yooj yim heev los tswj yog tias ua haujlwm zoo.
Ob peb yam Engineers feem ntau xav txog
Xaiv txoj cai transformer tsis yog hais txog qhov ntsuas hluav taws xob xwb.
Engineers feem ntau ntsuas lub peev xwm, impedance, txias txoj kev (xws li ONAN los yog ONAF), kais ntau yam, thiab installation tej yam kev mob ua ntej txiav txim siab. Cov xwm txheej ib puag ncig tseem ceeb dua li tib neeg qee zaum paub txog - qhov siab, qhov kub thiab txias, av noo, thiab cov pa phem tuaj yeem cuam tshuam rau kev ua haujlwm ntev -.
Kev ua raws li tus qauv yog lwm qhov loj. Feem ntau cov haujlwm ua raws li IEC, GB, lossis cov qauv zoo sib xws hauv tebchaws kom ntseeg tau tias muaj kev ntseeg siab thiab ua tau zoo.
Thiab tau kawg, kev saib xyuas tsis tu ncua tseem tseem ceeb. Kev kuaj roj, kev kuaj xyuas hluav taws xob, thiab qee lub sijhawm OLTC kev pabcuam mus rau txoj kev ntev mus rau kev ncua lub neej hloov pauv. Ib lub qhov dej zoo-chaw khaws cia tau yooj yim nyob hauv kev pabcuam tau ntau xyoo.
Kev xav zaum kawg
Thaum kawg ntawm hnub, 35kV roj- raus rau ntawm -load kais- hloov pauv yog ib qho ntawm cov khoom siv uas ntsiag to ua kom lub zog niaj hnub ua haujlwm. Lawv txhawb cov nroog, factories, renewable zog nroj tsuag, mines, tsheb thauj mus los systems - zoo nkauj npaum li cas txhua yam nyob ntawm cov hluav taws xob ruaj khov.
Raws li daim phiaj txuas ntxiv nthuav dav thiab txuas ntxiv txuas ntxiv ntxiv, cov transformers no tej zaum yuav dhau los ua qhov tseem ceeb tshaj qhov lawv twb muaj lawm.
Thiab yog tias koj tab tom npaj ib txoj haujlwm tshiab, nws ib txwm tsim nyog tham txog cov ntsiab lus ncaj qha nrog cov chaw tsim khoom. Kev teeb tsa kev hloov pauv hloov tau zoo tuaj yeem ua qhov sib txawv loj hauv qhov ntev - kev ua tau zoo thiab kev ntseeg tau.
