Intshayelelo: Amandla esiwabonelelwa yinkqubo yegridi yamandla ahlala elungelelaniswa ngokutshintshatshintshayo.Ngokwesiqhelo, okoko i-voltage inqunyelwe phakathi koluhlu oluchaziweyo, sinokufumana indawo engcono yokusebenzisa umbane.Kodwa inkqubo yonikezelo lwamandla ayiboneleli ngonikezelo lwamandla olugqibeleleyo.Ukongeza, akukho ndlela yokuba abavelisi bezixhobo babonelele ngezixhobo ezingakhuselekanga kwiidiphu zombane kuzo zonke izixhobo zombane.Ingxaki ye-voltage sag iya kubangela ukuphazamiseka okuninzi kunye nengxaki kubomi bemihla ngemihla kunye nemveliso.Ke zeziphi izixhobo ezifanelekileyo zembuyekezo ezikhoyo zokunciphisa impembelelo ye-voltage sags?Ngokuqhelekileyo, sisebenzisa iindidi ezintathu zezixhobo zembuyekezo: UPS (Uninterruptible Power Supply), Solid State Transfer Switch (SSTS), kunye neDynamic Voltage Restorer (DVR—Dynamic Voltage Restorer).Ngokubeka ezi zixhobo zembuyekezo phakathi kwenkqubo yonikezelo lwamandla kunye nothungelwano lombane lomsebenzisi.Ezi zixhobo zintathu zembuyekezo zineenzuzo zazo kunye nokungalunganga.
Unikezelo lwamandla olungaphazamisekiyo (UPS-Uninterruptible Power Supply): UPS ngokufutshane, sisixhobo esisetyenziswa ngokuqhelekileyo ekunciphiseni imbuyekezo ye-voltage sag.Umgaqo wokusebenza we-UPS uqhele ukusebenzisa amandla ekhemikhali afana neebhetri ukugcina amandla ombane.Xa udibana nengxaki yokusilela kombane ngesiquphe kwenkqubo yonikezelo lwamandla, i-UPS inokusebenzisa amandla agcinwe kwangaphambili ukugcina unikezelo lwamandla imizuzu emininzi ukuya kwiiyure ezininzi.Ngale ndlela, ingxaki ye-voltage sag ebangelwa yinkqubo yonikezelo lwamandla inokusombulula ngexesha elithile.Kodwa i-UPS ikwanayo nobuthathaka bayo obubalaseleyo.Umbane ugcinwa ngamandla ekhemikhali, kwaye olu yilo ngokwalo lutya amandla amaninzi.Ibhetri yokugcina amandla ayithathi nje indawo eninzi, kodwa kunzima ukuyigcina.Ngexesha elifanayo, ngenxa yaloo mithwalo enempembelelo enkulu kwigridi, kuyimfuneko ukwandisa amandla ayo.Ngaphandle koko, kulula ukwenza ukuba ibhetri yokugcina amandla ingaphumeleli.
I-Solid State Transfer Switch (SSTS—I-Solid State Transfer Switch), ebizwa ngokuba yi-SSTS.Kwinkqubo yokuvelisa iifektri okanye ukusetyenziswa kombane kwangempela ngabasebenzisi.Ngokuqhelekileyo kukho iibhasi ezimbini ezahlukeneyo okanye iintambo zonikezelo lombane ezivela kwizitishi ezahlukeneyo zonikezelo lombane.Ngeli xesha, xa enye yeendlela zokubonelela ngombane inokuphazamiseka okanye i-voltage sag, inokukhawuleza (5-12ms) itshintshelwe kwelinye icandelo lombane ngokusebenzisa i-SSTS, ngaloo ndlela iqinisekisa ukuqhubeka kwayo yonke intambo yombane.Ukuvela kwe-SSTS kujoliswe kwisisombululo se-UPS.Ayisiyiyo kuphela indleko yotyalo-mali lwezixhobo eziphantsi, kodwa ikwasisisombululo esifanelekileyo sokuhla kombane wemithwalo ephezulu yamandla.Xa kuthelekiswa ne-UPS, i-SSTS ikwanezinto ezininzi eziluncedo ezifana nexabiso eliphantsi, inyawo encinci, kunye nokungakhathalelwa.Ukungalungi kuphela kukuba i-busbar yesibini okanye imigca yemizi-mveliso evela kwizitishi ezahlukeneyo ziyafuneka unikezelo lwamandla, oko kukuthi, unikezelo lwamandla olugciniweyo luyafuneka.
I-Dynamic Voltage Restorer (i-DVR—I-Dynamic Voltage Restorer), ekubhekiselwa kuyo njenge-DVR.Ngokuqhelekileyo, iya kufakwa phakathi kokunikezelwa kwamandla kunye nezixhobo zomthwalo.I-DVR inokubuyekeza icala lomthwalo kwi-voltage yokuhla efanelekileyo ngaphakathi kwee-milliseconds, ibuyisele icala lomthwalo kwi-voltage eqhelekileyo, kwaye isuse impembelelo ye-voltage sag.Owona msebenzi ubalulekileyo we-DVR kukubonelela ngokukhawuleza ngokwaneleyo ixesha lokuphendula, kwaye inokunyusa ubunzulu bokhuseleko lwe-voltage sag.Ubunzulu bokhuseleko bunokutolikwa njengoluhlu lwe-voltage sag enokuthi i-DVR ifumane.Ngokukodwa kubasebenzisi befektri, xa sithetha ngokubanzi, xa kukho ukuguquguquka kwe-voltage sag ngexesha lokusebenza okuqhelekileyo komatshini kunye nezixhobo, kuya kukhokelela ngokulula kwingxaki kwizinga lempumelelo yemveliso, oko kukuthi, kuya kubakho iimveliso ezineziphene.Ngokusebenzisa i-DVR, iimfuno zokusebenza eziqhelekileyo zomzi-mveliso zinokuqinisekiswa, kwaye ukuphazamiseka okubangelwa kukutshintsha kombane osezantsi akunakuvakala.Kodwa i-DVR ayinayo indlela yokubuyisela ukuphazamiseka kombane ogqithise ubunzulu bokukhusela i-voltage sag.Ke ngoko, xa ukuhla kwamandla ombane kuphakathi kobunzulu bokhuseleko lwe-sag ye-voltage, i-DVR inokudlala indima yayo kuphela xa iqinisekisiwe ukuba ayinakuphazamiseka.
I-DVR eveliswe nguMbane waseHongyan inokuthenjwa kakhulu: ukuthembeka okuphezulu, eyilelwe ngokukodwa imithwalo yemizi-mveliso, ukusebenza kakuhle kwenkqubo, impendulo ekhawulezayo, ukusebenza okuphezulu kokulungisa, akukho naliti ye-harmonic, itekhnoloji epheleleyo yolawulo lwedijithali esekwe kwi-DSP, ukusebenza okuphezulu okuthembekileyo, ukwandiswa okuhambelanayo. umsebenzi, uyilo lwemodyuli, iphaneli yemisebenzi emininzi enomzobo we-TFT wombala wokwenyani, ukugcinwa-free ngokupheleleyo, iindleko eziphantsi zokusebenza, akukho mfuneko yezixhobo zokupholisa, uyilo lwesakhiwo esibambeneyo, unyawo oluncinci kunye nezinye iingenelo ezininzi.
Ixesha lokuposa: Apr-13-2023