Capacitor Reactive Power Compensation Switching Methods

Tsawg-voltage shunt capacitor reactive zog them nyiaj hloov khoom siv suav nrog cov hauv qab no:

(I) Hloov Hloov Tswj los ntawm Capacitor-Tshwj xeebAC Contactors
Vim yog cov yam ntxwv ntawm cov capacitors, qhov hluav taws xob tsis tuaj yeem hloov pauv tam sim ntawd, ua rau muaj qhov cuam tshuam loj heev thaum cov capacitors muaj zog. Qhov inrush tam sim no tuaj yeem ua tau ntau zaus ntawm qhov ntsuas tam sim no ntawm lub capacitor. Xws li inrush tam sim no cuam tshuam rau daim phiaj hluav taws xob thiab txo qis kev ua haujlwm ntawm lub capacitor. Hom kev hloov khoom siv no yog pheej yig thiab txhim khu kev qha, ua rau nws siv ntau tshaj plaws. Txawm li cas los xij, vim muaj kev txwv lub neej ntawm AC contactors, lawv tsis tsim nyog rau kev hloov pauv ntau zaus. Yog li ntawd, cov khoom siv them nyiaj zoo li no tsis haum rau cov khoom thauj uas sib txawv ntau zaus.

(II) Switching Controlled byThyristor Hloov
Thyristors muaj kev cuam tshuam loj heev rau kev puas tsuaj los ntawm cov dej ntws ntws, yuav tsum muaj xoom- hla kev sib tw. Ua kom tiav cov xwm txheej rau xoom- hla kev sib tw ntawm thyristors yog qhov nyuaj heev. Tsis tas li ntawd, cov cuab yeej zoo li no yog cov qauv tsim, kim, tsis tshua muaj kev ntseeg siab, thiab muaj lub zog poob siab. Tsuas yog rau cov ntawv thov uas muaj qhov sib txawv ntawm qhov sib txawv, lawv muaj qhov txwv tsis pub muaj txiaj ntsig hauv lwm qhov xwm txheej.

(III) Hloov Hloov Tswj los ntawmComposite Switches
Composite keyboards muab qhov zoo ntawm ob qho tib si AC contactors thiab lub zog hluav taws xob hloov khoom siv. Lawv tsis tsuas yog txwv tsis pub cov dej ntws tawm thiab tsis txhob arcing tab sis kuj txo qis lub zog poob ntawm thyristors, tshem tawm qhov xav tau ntawm cov dab dej kub kub thiab cov kiv cua txias. Tus yuam sij rau kev sib txuas ob yam no yog nyob rau hauv kev sib koom ua ke ntawm lub sijhawm. Lub thyristor hloov yog lub luag hauj lwm rau kev tswj lub energization thiab de-energization ntawm lub capacitor, thaum lub AC contactor tswj qhov kev twb kev txuas tom qab lub capacitor yog energized. Thaum tus contactor koom nrog, lub thyristor hloov tam sim ntawd disengages, tsis txhob poob lub hwj chim thiab cua sov tsim los ntawm lub thyristor Cheebtsam.

Lub xoom- hla kev ua haujlwm ntawm cov keyboards sib xyaw yog tswj los ntawm qhov hluav taws xob xoom- hla kev kuaj pom optocoupler. Los ntawm qhov kev xav ntawm microscopic, qhov no tsis yog qhov tseeb xoom- hla kev hloov pauv tab sis qhov tshwm sim thaum qhov hluav taws xob qis dua 16V-40V (sib npaug rau lub kaum sab xis ntawm 2-5 degrees), uas tseem ua rau qee qhov cuam tshuam tam sim no. Tsis tas li ntawd, kev sib xyaw ntawm thyristors thiab relays ua rau cov qauv sib txawv, thiab qhov rhiab heev ntawm thyristors rau dv / dt ua rau lawv muaj kev puas tsuaj. Yog li, tsis muaj ib qho ntawm cov khoom siv hloov pauv tam sim no siv nyob rau hauv qis -voltage them nyiaj installation yog flawless nkaus.

(IV) Hloov Hloov Tswj los ntawm Synchronous Switches (Kuj hu ua Theem -Selection Switches)
Synchronous keyboards yog ib hom tshiab tshwj xeeb hloov khoom siv rau reactive zog them capacitors tsim nyob rau hauv xyoo tas los no. Lawv sawv cev rau kev sib koom ua ke zoo tshaj plaws ntawm cov khoom siv hluav taws xob thiab cov tshuab microelectronic niaj hnub. Kev sib koom ua ke ntawm cov qauv tswj yooj yim ntawm AC contactors thiab xoom-voltage switching thiab xoom-tam sim no disconnection zoo ntawm cov keyboards sib xyaw, lawv ua tiav txwv qhov tam sim no inrush tam sim no thaum lub sij hawm capacitor hloov mus rau hauv peb npaug ntawm qhov ntsuas kev ua haujlwm tam sim no. Qhov no daws tau cov teeb meem zoo xws li siab -voltage harmonics thiab loj inrush tam sim no thaum lub sij hawm hloov capacitor.