Kev piav qhia
Cov txheej txheem ntawm kev tswj hluav taws xob hloov hluav taws xob tuaj yeem hloov kho raws li seb lub tshuab hluav taws xob puas ua haujlwm (energized), thiab tuaj yeem muab faib ua ob pawg loj: tawm -load voltage regulation thiab ntawm -load voltage regulation.
1. Lub Ntsiab Cai
Txawm hais tias siv txoj kev twg los xij, lub hauv paus ntsiab lus yog los kho qhov tso zis hluav taws xob los ntawm kev hloov pauv qhov hloov pauv ntawm qhov siab ntawm -voltage winding.
Cov mis yog qhia raws li: V1/V2 ≈ N1/N2
Ntawm no, V1 thiab V2 yog qhov voltages ntawm lub hauv paus (siab-voltage side) thiab theem nrab (tsawg-voltage side) windings, thiab N1 thiab N2 yog tus lej sib thooj.
Los ntawm kev hloov cov lej N1 ntawm qhov siab -voltage sab, qhov hluav taws xob theem nrab V2 tuaj yeem khaws cia ruaj khov txawm tias qhov hluav taws xob loj V1 hloov pauv mus rau qee qhov. Qhov laj thawj kev tswj hwm qhov hluav taws xob feem ntau yog ua tiav ntawm qhov siab - qhov hluav taws xob sab yog tias qhov tam sim no me dua, ua rau cov kais hloov kev sib cuag tau yooj yim rau kev tsim khoom thiab ntev dua -.
2. Cov txheej txheem tseem ceeb ntawm kev tswj hluav taws xob
(1). Off-Load Kais Changer (tseem hu ua Tsis yog-Load Kais Changer lossis Fais Fab-Tshwj xeeb Voltage Regulation)
Txoj kev ua haujlwm:Txoj hauj lwm kais yuav tsum tau hloov manually thaum lub transformer yog kiag li powered thiab disconnected los ntawm daim phiaj.
Txoj Cai Ua Haujlwm:Lub siab -voltage winding yog nruab nrog ntau tus kais dej (feem ntau yog 3 lossis 5), xws li ntsuas hluav taws xob, +5%, -5%, thiab lwm yam. Cov kais dej no txuas nrog lub tshuab hloov pauv. Thaum xav tau kev hloov hluav taws xob, qhov hloov pauv tau ua haujlwm tom qab lub hwj chim tawm los xaiv tus kais sib txawv, yog li hloov pauv qhov sib piv.
Yam ntxwv:
- Qhov zoo:Cov qauv yooj yim, tus nqi qis, kev ntseeg siab.
- Qhov tsis zoo:Yuav tsum muaj lub hwj chim-tawm thaum hloov qhov hluav taws xob, cuam tshuam rau lub zog txuas ntxiv, thiab tsis tuaj yeem hloov kho tiag tiag -lub sijhawm raws li kev hloov pauv.
Application Scenario:Haum rau cov xwm txheej uas tsis tshua muaj hluav taws xob ruaj khov, xws li cov khoom siv hluav taws xob faib hluav taws xob uas hloov pauv raws caij nyoog yog me me lossis cov hluav taws xob nyob deb nroog. Kev hloov kho yog tsim los ntawm cov kws kho hluav taws xob ua ntej lub sijhawm xav tau hluav taws xob tsawg lossis siab kawg.
(2) Ntawm -Load Tap Changer (tseem hu ua Load Tap Changer)
Txoj kev ua haujlwm:Txoj haujlwm kais tuaj yeem hloov pauv tau los yog manually thaum lub tshuab hloov pauv ua haujlwm hauv kev thauj khoom, ua tiav kev tswj hwm tsis muaj kev cuam tshuam.
Txoj Cai Ua Haujlwm:Qhov no yog qhov nyuaj tshaj plaws thiab tseem ceeb technology. Nws lub hauv paus yog ntawm -load kais hloov pauv, muaj ob ntu:
- Xaiv:Lub luag haujlwm rau preselecting tus kais tom ntej yam tsis muaj kev cuam tshuam tam sim no.
- Diverter Hloov:Lub luag haujlwm rau kev xa cov load tam sim no sai sai los ntawm kev tiv tauj tam sim no mus rau qhov kev sib tham ua ntej thaum lub sijhawm tam sim no zero (feem ntau yog zero tam sim no - hla qhov taw tes).
Txhawm rau tiv thaiv kev cuam tshuam tam sim no thiab kev sib tw ntau dhau thaum lub sijhawm hloov pauv, cov hloov pauv hloov pauv (los yog cov reactors) raug siv los nqa tam sim no ib ntus. Cov txheej txheem hloov ntawm niaj hnub ntawm -load kais hloov pauv tau ua tiav nyob rau hauv kaum tawm milliseconds, nrog rau kev cuam tshuam tsawg kawg nkaus ntawm cov khoom siv hluav taws xob.
Yam ntxwv:
Qhov zoo:Kev hloov hluav taws xob tsis tas yuav siv hluav taws xob -tawm, ua kom lub zog txuas ntxiv thiab kev ruaj ntseg voltage. tuaj yeem ua ke nrog kev tswj hwm tsis siv neeg rau lub sijhawm tiag tiag - kev tswj hwm qhov hluav taws xob.
Qhov tsis zoo:Cov txheej txheem nyuaj heev, kev tsim khoom siab, kim, thiab yuav tsum tau saib xyuas qhov tseem ceeb.
Application Scenarios: Tsim nyog rau cov xwm txheej uas yuav tsum muaj lub zog zoo, xws li cov chaw hauv nroog hauv nroog, lub tshuab hluav taws xob theem- nce chaw nres tsheb, lossis cov khoom siv hluav taws xob rau cov neeg siv khoom tseem ceeb, kom ntseeg tau tias qhov voltage hloov pauv nyob rau hauv lub teb chaws tus qauv.
3. Lwm Txoj Kev Pabcuam lossis Tshwj Xeeb Txoj Cai Tswjhwm
Ntxiv nrog rau ob txoj hauv kev tseem ceeb uas tau hais los saum toj no uas hloov pauv hloov pauv, muaj qee txoj hauv kev pabcuam:
(1) Series Voltage Regulator:
Lub autotransformer txuas nrog hauv cov kab ntawm cov kab sib kis, thiab nws cov zis hluav taws xob tau hloov kho kom them nyiaj rau qhov hluav taws xob poob raws kab. Nws tsis ncaj qha hloov lub ntsiab transformer lub lem piv tab sis zoo "readjusts" daim phiaj voltage.
(2) Ntxiv Voltage-Regulating Transformer:
Ib qho ntxiv voltage-regulating transformer (series transformer) yog ntxiv sab nraum lub ntsiab transformer. Los ntawm kev kho qhov voltage ntawm no auxiliary transformer, qhov tso zis voltage variation ntawm lub ntsiab transformer yuav tau compensated. Txoj hauv kev no cais cov txheej txheem kev tswj hwm qhov nyuaj ntawm lub cev hloov pauv loj.
(3) Fais fab Electronics Voltage Regulation (Static VAR Compensator / SVG, Static Synchronous Compensator / STATCOM, thiab lwm yam):
Qhov no yog ib qho kev siv thev naus laus zis hauv cov kab hluav taws xob niaj hnub. Nws tsis ncaj qha hloov pauv hloov pauv hloov pauv tab sis tswj hwm qib voltage ntawm kab sib chaws los ntawm kev txhaj tshuaj sai lossis nqus lub zog siv hluav taws xob siv siab - lub zog hluav taws xob hluav taws xob (xws li IGBTs). Nws cov lus teb yog ceev heev (ntawm millisecond scale), feem ntau yog siv rau dynamic voltage txhawb thiab txhim kho qhov system stability.
