Idivayisi esebenzayo yesinxephezelo samandla, eyaziwa nangokuthi idivayisi yokulungiswa kwesici samandla, ibalulekile kusistimu yamandla.Umsebenzi wayo oyinhloko ukuthuthukisa isici samandla sohlelo lokuphakela nokusabalalisa, ngaleyo ndlela kwandiswe ukusebenza kahle kokusetshenziswa kwezinto ezisetshenziswayo zokudlulisa neziteshi, ukwenza ngcono ukusebenza kahle kwamandla, nokunciphisa izindleko zikagesi.Ukwengeza, ukufaka amadivaysi esinxephezelo samandla asebenzayo aguqukayo ezindaweni ezifanele kolayini bawo bamabanga amade kungathuthukisa ukuzinza kwesistimu yokudlulisela, kukhuphule umthamo wokudlulisela, futhi kuzinzise i-voltage ekugcineni oyitholayo kanye negridi.Imishini yesinxephezelo samandla asebenzayo isidlulile. izigaba eziningana zokuthuthuka.Ezinsukwini zakuqala, abathuthukisi besigaba esivumelanayo babengabameleli abavamile, kodwa kancane kancane baqedwa ngenxa yobukhulu babo obukhulu kanye nezindleko eziphakeme.Indlela yesibili yayiwukusebenzisa ama-parallel capacitor, ayenezinzuzo eziyinhloko zezindleko eziphansi nokufaka nokusetshenziswa kalula.Kodwa-ke, le ndlela idinga ukubhekana nezinkinga ezifana ne-harmonics nezinye izinkinga zekhwalithi yamandla ezingase zibe khona ohlelweni, futhi ukusetshenziswa kwama-capacitor ahlanzekile kuye kwaba yinto engavamile.Okwamanje, idivayisi yesinxephezelo se-capacitor yochungechunge iyindlela esetshenziswa kabanzi yokuthuthukisa isici samandla.Uma umthwalo wesistimu yomsebenzisi ukhiqizwa okuqhubekayo futhi izinga lokushintsha umthwalo lingekho phezulu, ngokuvamile kunconywa ukusebenzisa imodi yesinxephezelo esinqunyiwe ngama-capacitor (FC).Ngaphandle kwalokho, imodi yesinxephezelo esizenzakalelayo elawulwa ngabathintana nabo kanye nokushintshwa kwesinyathelo ngesinyathelo ingasetshenziswa, efanelekile kokubili ukunikezwa kwamandla kagesi aphakathi nendawo naphansi kanye nezinhlelo zokusabalalisa. Ukuze uthole isinxephezelo esisheshayo ezimeni zokushintsha okusheshayo komthwalo noma imithwalo yethonya, njengokuxutshwa kwemboni yenjoloba. imishini, lapho isidingo samandla asebenzayo sishintsha ngokushesha, izinhlelo zesinxephezelo esizenzakalelayo samandla asebenzayo, ezisebenzisa ama-capacitor, zinemikhawulo.Lapho ama-capacitor enqanyulwa kugridi yamandla, kukhona i-voltage esele phakathi kwezigxobo ezimbili ze-capacitor.Ubukhulu be-voltage esele abukwazi ukubikezelwa futhi kudinga imizuzu engu-1-3 yesikhathi sokukhipha.Ngakho-ke, isikhawu phakathi kokuxhunywa kabusha kugridi yamandla sidinga ukulinda kuze kube yilapho i-voltage eyinsalela yehliswa ibe ngaphansi kuka-50V, okuholela ekuntulekeni kokusabela okusheshayo.Ukwengeza, ngenxa yokuba khona kwenani elikhulu lama-harmonics ohlelweni, i-LC-tuned isinxephezelo semishini yokuhlunga eyenziwe ngama-capacitor kanye nama-reactors adinga umthamo omkhulu wokuqinisekisa ukuphepha kwama-capacitor, kodwa futhi angaholela ekukhokheni ngokweqile futhi abangele uhlelo ukuba iba capacitive.Ngakho, isinxephezelo se-var esimile (I-SVC) wazalwa.Ummeleli ojwayelekile we-SVC wakhiwe i-Thyristor Controlled Reactor (TCR) kanye ne-fixed capacitor (FC).Isici esibalulekile se-static var compensator yikhono layo lokuqhubeka nokulungisa amandla asebenzayo edivayisi yesinxephezelo ngokulawula i-engeli yokulibaziseka ecuphayo yama-thyristors ku-TCR.I-SVC isetshenziswa kakhulu ezinhlelweni zokusabalalisa amandla kagesi aphakathi nendawo ukuya phezulu, futhi ifaneleka kakhulu ezimweni ezinomthamo omkhulu wokulayisha, izinkinga ezinzima ze-harmonic, imithwalo yethonya, namazinga aphezulu okushintsha imithwalo, njengezigayo zensimbi, izimboni zenjoloba, i-metallurgy engeyona insimbi, ngokuthuthukiswa kobuchwepheshe bamandla kagesi, ikakhulukazi ukuvela kwemishini ye-IGBT kanye nentuthuko kubuchwepheshe bokulawula, sekuvele olunye uhlobo lwesinxephezelo samandla asebenzayo oluhlukile kuma-capacitor kanye namadivayisi asekelwe kuma-reactors. .Lena i-Static Var Generator (SVG), esebenzisa ubuchwepheshe bokulawula i-PWM (Pulse Width Modulation) ukuze ikhiqize noma imunce amandla asebenzayo.I-SVG ayidingi ukubalwa kwe-impedance yesistimu uma ingasetshenziswa, njengoba isebenzisa amasekhethi okuguqula ibhuloho anobuchwepheshe bamazinga amaningi noma i-PWM.Ngaphezu kwalokho, uma kuqhathaniswa ne-SVC, i-SVG inezinzuzo zosayizi omncane, ukushelela okusheshayo okuqhubekayo nokuguquguqukayo kwamandla asebenzayo, kanye nekhono lokunxephezela kokubili amandla okungenisa kanye ne-capacitive.
Isikhathi sokuthumela: Aug-24-2023