Isandulelo: Amandla esiwanikezwa isistimu yegridi yamandla avamise ukulingana ngokushintshashintshayo.Ngokuvamile, inqobo nje uma i-voltage ilinganiselwe phakathi kwebanga elithile, singathola indawo engcono yokusebenzisa ugesi.Kodwa uhlelo lokuhlinzeka ngogesi aluhlinzeki ngokunikezwa kwamandla okuphelele.Ukwengeza, ayikho indlela yokuthi abakhiqizi bemishini bahlinzeke ngemishini engagonyelwe amadiphu kagesi kuwo wonke amathuluzi kagesi.Inkinga ye-voltage sag izodala ukuphazamiseka okuningi kanye nenkinga empilweni yansuku zonke nokukhiqizwa.Ngakho-ke yiziphi izisetshenziswa ezinhle zesinxephezelo ezikhona zokunciphisa umthelela wama-voltage sags?Ngokuvamile, sisebenzisa izinhlobo ezintathu zamadivayisi esinxephezelo: i-UPS (Uninterruptible Power Supply), Solid State Transfer Switch (SSTS), kanye neDynamic Voltage Restorer (DVR—Dynamic Voltage Restorer).Ngokubeka lezi zisetshenziswa zesinxephezelo phakathi kwesistimu yokuphakelwa kwamandla kanye nenethiwekhi kagesi yomsebenzisi.Le mishini emithathu yesinxephezelo inezinzuzo zayo kanye nokubi.
I-Uninterruptible Power Supply (UPS—Uninterruptible Power Supply): I-UPS ngamafuphi, iyithuluzi elisetshenziswa kakhulu ukwehlisa isinxephezelo se-voltage sag.Umgomo wokusebenza we-UPS uvamise ukusebenzisa amandla amakhemikhali njengamabhethri ukugcina amandla kagesi.Lapho ihlangabezana nenkinga yokuhluleka kwamandla kungazelelwe kwesistimu yokuphakelwa kwamandla, i-UPS ingasebenzisa amandla agcinwe kusengaphambili ukuze igcine ukunikezwa kwamandla imizuzu embalwa kuya emahoreni ambalwa.Ngale ndlela, inkinga ye-voltage sag ebangelwa uhlelo lokuhlinzeka ngamandla ingaxazululwa phakathi nesikhathi esithile.Kodwa i-UPS nayo inobuthakathaka bayo obuvelele.Ugesi ugcinwa ngamandla amakhemikhali, futhi lo mklamo ngokwawo udla amandla amaningi.Amabhethri okugcina amandla awagcini nje ngokuthatha indawo enkulu, kodwa futhi kunzima ukuwanakekela.Ngesikhathi esifanayo, kuleyo mithwalo enomthelela omkhulu kugridi, kuyadingeka ukwandisa amandla ayo.Uma kungenjalo, kulula ukubangela ukuthi ibhethri yokugcina amandla ihluleke.
I-Solid State Transfer Switch (SSTS—I-Solid State Transfer Switch), ebizwa ngokuthi i-SSTS.Enqubweni yezimboni zokukhiqiza izimboni noma ukusetshenziswa kwangempela kukagesi ngabasebenzisi.Ngokuvamile kuba namabhasi amabili ahlukene noma imigqa yokuphakelwa kukagesi evela eziteshini ezincane ezihlukene zokunikezwa kwamandla kagesi.Ngalesi sikhathi, uma enye yelayini yokuphakela amandla inokuphazamiseka noma i-voltage sag, ingashintshwa ngokushesha (5-12ms) iye kokunye ukunikezwa kwamandla ngokusebenzisa i-SSTS, ngaleyo ndlela iqinisekise ukuqhubeka kwawo wonke ulayini wokuphakela amandla.Ukuvela kwe-SSTS kuhloswe kwisixazululo se-UPS.Akukhona nje kuphela ukuthi izindleko eziphelele zokutshalwa kwezimali kwemishini ziphansi, kodwa futhi ziyisixazululo esifanelekile sokwehla kwamandla kagesi wemithwalo yamandla aphezulu.Uma kuqhathaniswa ne-UPS, i-SSTS futhi inezinzuzo eziningi njengentengo ephansi, izinyawo ezincane, nokungakhathalelwa.Okubi kuphela ukuthi ibha yebhasi yesibili noma imigqa yezimboni ezivela eziteshini ezincane ezihlukene ziyadingeka ukuze kunikezwe amandla, okungukuthi, ukunikezwa kwamandla okusekelayo kuyadingeka.
I-Dynamic Voltage Restorer (i-DVR—I-Dynamic Voltage Restorer), ebizwa ngokuthi i-DVR.Ngokuvamile, izofakwa phakathi kokunikezwa kwamandla kanye nempahla yokulayisha.I-DVR inganxephezela uhlangothi lomthwalo ngevolthemu ewayo efanele phakathi kwama-millisecond, ibuyisele uhlangothi lomthwalo ku-voltage evamile, futhi isuse umthelela we-voltage sag.Umsebenzi obaluleke kakhulu we-DVR uwukunikeza isikhathi sokuphendula esisheshayo esanele, futhi ingakhuphula ukujula kokuvikelwa kwe-voltage sag.Ukujula kokuvikela kungahunyushwa njengobubanzi be-voltage sag i-DVR engabufaka.Ikakhulukazi kubasebenzisi basefekthri, uma sikhuluma nje, uma sekunokushintshashintsha kwe-voltage sag ngesikhathi sokusebenza okuvamile komshini nemishini, kuzoholela kalula enkingeni ngezinga lempumelelo yokukhiqiza, okungukuthi, kuzoba nemikhiqizo enesici.Ngokusebenzisa i-DVR, izidingo ezijwayelekile zokusebenza kwefekthri zingaqinisekiswa, futhi ukuphazamiseka okubangelwa ukushintshashintsha kwamandla kagesi aphansi ngeke kuzwakale.Kodwa i-DVR ayinayo indlela yokunxephezela ukuphazamiseka kwamandla kagesi okudlula ukujula kokuvikelwa kwe-voltage sag.Ngakho-ke, uma ukwehla kwamandla kagesi kungaphakathi kwebanga lokujula kokuvikelwa kwe-voltage sag, i-DVR ingadlala indima yayo efanele kuphela uma iqinisekiswa ukuthi ayiphazamiseki.
I-DVR ekhiqizwe i-Hongyan Electric inokusebenziseka okuthembekile: ukwethembeka okuphezulu, okuklanyelwe ngokukhethekile imithwalo yezimboni, ukusebenza kahle kwesistimu, ukusabela okusheshayo, ukusebenza okuphezulu kokulungisa, akukho mjovo we-harmonic, ubuchwepheshe obugcwele bokulawula idijithali obusekelwe ku-DSP, ukusebenza okuphezulu okuthembekile, ukunwetshwa okuthuthukisiwe okuhambisanayo. umsebenzi, idizayini ye-modular, iphaneli yemisebenzi eminingi enombukiso wombala we-TFT oyingcaca, ukunganakekeli ngokuphelele, izindleko eziphansi zokusebenza, asikho isidingo semishini yokupholisa, idizayini yesakhiwo esihlangene, indawo encane kanye nezinye izinzuzo eziningi.
Isikhathi sokuthumela: Apr-13-2023