Isethi Yejeneretha Yedizili Ifaniswe Ne-UPS

Lesi sihloko sihlaziya futhi sichaza umthelela wesici samandla okokufaka we-UPS nesihlungi sokufaka ku- ijeneretha yamandla ukuze kucaciswe imbangela yenkinga, bese uthola isisombululo.

1. Ukuxhumana phakathi kwesethi yejeneretha kadizili kanye ne-UPS.

Abakhiqizi nabasebenzisi bezinhlelo zokuphakela ugesi ezingaphazamiseki kudala bezibona izinkinga zokuxhumanisa phakathi kwamasethi akhiqiza ugesi kanye ne-UPS, ikakhulukazi ama-harmonics amanje akhiqizwa izilungisi ezikhiqizwa ezinhlelweni zokuphakela amandla njengezilawuli zamandla kagesi zamasethi amajeneretha namasekhethi okuvumelanisa e-UPS.Imiphumela emibi yalokhu isobala kakhulu.Ngakho-ke, onjiniyela bohlelo lwe-UPS baklame isihlungi sokufaka futhi basisebenzisa ku-UPS, belawula ngempumelelo ama-harmonics amanje kuhlelo lokusebenza lwe-UPS.Lezi zihlungi zidlala indima ebalulekile ekusebenzisaneni kwe-UPS namasethi ejeneretha.

Cishe zonke izihlungi zokufaka zisebenzisa ama-capacitor nama-inductors ukuze zimunce ama-harmonic amanje abhubhisa kakhulu kokokufaka kwe-UPS.Idizayini yesihlungi sokufaka icabangela iphesenti lokuhlanekezela okuphelele kwe-harmonic okukhona kusekethe ye-UPS nangaphansi komthwalo ogcwele.Enye inzuzo yezihlungi eziningi ukuthuthukisa isici samandla okokufaka we-UPS elayishiwe.Nokho, omunye umphumela wokusetshenziswa kwesihlungi okokufaka ukunciphisa ukusebenza kahle konke kwe-UPS.Izihlungi eziningi zisebenzisa cishe u-1% wamandla e-UPS.Idizayini yesihlungi sokufaka njalo ifuna ibhalansi phakathi kwezinto ezivumayo nezingathandeki.

Ukuze kuthuthukiswe ukusebenza kahle kwesistimu ye-UPS ngangokunokwenzeka, onjiniyela be-UPS basanda kwenza intuthuko ekusetshenzisweni kwamandla kwesihlungi sokufaka.Ukuthuthukiswa kokusebenza kahle kwesihlungi kuncike kakhulu ekusetshenzisweni kobuchwepheshe be-IGBT (Insulated Gate Transistor) ekwakhiweni kwe-UPS.Ukusebenza okuphezulu kwe-inverter ye-IGBT kuholele ekwakhiweni kabusha kwe-UPS.Isihlungi sokufaka singamunca ama-harmonics amanje kuyilapho sidonsa ingxenye encane yamandla asebenzayo.Ngamafuphi, isilinganiso sezici ze-inductive kuya ku-capacitive factor kusihlungi sincishisiwe, ivolumu ye-UPS iyancishiswa, nokusebenza kahle kuyathuthukiswa.Izinto ezisensimini ye-UPS zibonakala zixazululiwe, kodwa ukuhambisana kwenkinga entsha nejeneretha kuphinde kwavela, esikhundleni senkinga endala.

2. Inkinga ye-resonance.

Inkinga ye-capacitor self-excitation ingase ibe yimbi noma imbozwe ezinye izimo zikagesi, njenge-resonance yochungechunge.Lapho inani le-ohmic le-inductive reactance ye-generator kanye nevelu ye-ohmic ye-capacitive reactance yesihlungi sokufakwayo kuseduze komunye nomunye, futhi inani lokumelana lesistimu lincane, i-oscillation izokwenzeka, futhi i-voltage ingase idlule inani elilinganiselwe lamandla. uhlelo.Uhlelo olusanda kwakhiwa lwe-UPS empeleni luyi-100% capacitive input impedance.I-500kVA UPS ingase ibe namandla angu-150kvar kanye nesici samandla esiseduze noziro.Ama-shunt inductors, ukuklinywa kochungechunge, neziguquli zokuhlukanisa okokufaka ziyizingxenye ezivamile ze-UPS, futhi lezi zingxenye zonke ziyashintshashintsha.Eqinisweni, bona kanye nekhono lesihlungi ndawonye kwenza i-UPS iziphathe njenge-capacitive iyonke, futhi kungase kube khona kakade ama-oscillations ngaphakathi kwe-UPS.Ngokuhambisana nezici ze-capacitive zezintambo zamandla ezixhunywe ku-UPS, ubunkimbinkimbi balo lonke uhlelo bukhule kakhulu, ngaphezu kobubanzi bokuhlaziywa konjiniyela abajwayelekile.

3. Isethi yejeneretha yedizili nokulayisha.

Amasethi ejeneretha kadizili ancike kusilawuli se-voltage ukulawula i-voltage ephumayo.I-voltage regulator ithola i-voltage ephumayo yezigaba ezintathu futhi iqhathanise inani layo eliphakathi nenani le-voltage elidingekayo.Isilawuli sithola amandla emthonjeni wamandla asizayo ngaphakathi kwejeneretha, ngokuvamile i-generator coaxial encane enejeneretha eyinhloko, futhi idlulisela amandla e-DC kukhoyili ye-excitation yenkundla kazibuthe ye-rotor generator.Ikhoyili yamanje iyakhuphuka noma iwe ukuze ulawule indawo kazibuthe ezungezayo ye Ikhoyili ye-generator stator , noma usayizi we-EMF ye-electromotive force.I-flux kazibuthe yekhoyili ye-stator inquma i-voltage ephumayo ye-generator.

Ukumelana kwangaphakathi kwekhoyili ye-stator yesethi yejeneretha yedizili imelelwa ngu-Z, okuhlanganisa izingxenye ezishintshayo neziphikisayo;amandla e-electromotive we-generator elawulwa ikhoyili ye-rotor excitation imelwe ngu-E ngomthombo we-voltage we-AC.Ngokucabanga ukuthi umthwalo uyashintsha, i-current Ibambezela i-voltage U nge-engeli yesigaba sikagesi esingu-90° ncamashi kumdwebo we-vector.Uma umthwalo umelana ngokuphelele, ama-vectors we-U kanye nami sizoqondana noma sibe esigabeni.Eqinisweni, imithwalo eminingi iphakathi kokumelana nokufaka kancane.Ukwehla kwamandla kagesi okubangelwa ukudlula kwamanje kukhoyili ye-stator kumelelwa yi-voltage vector I×Z.Empeleni isamba sama-voltage amabili amancane, ukwehla kwamandla kagesi okumelana nesigaba nge-I kanye ne-inductor voltage yehla ngo-90° ngaphambili.Kulokhu, kwenzeka ukuthi isesigabeni ne-U. Ngoba amandla e-electromotive kufanele alingane nesamba sokwehla kwamandla kagesi wokumelana kwangaphakathi kwejeneretha kanye ne-voltage ephumayo, okungukuthi, isamba se-vector ye-vector E=U kanye I×Z.I-voltage regulator ingalawula ngempumelelo i-voltage U ngokushintsha u-E.

Manje cabanga ukuthi kwenzekani ezimweni zangaphakathi zejeneretha lapho kusetshenziswa umthwalo we-capacitive omsulwa esikhundleni somthwalo ongenayo inductive.Okwamanje ngalesi sikhathi kuphambene nje nomthwalo we-inductive.I-current I manje ihola i-voltage vector U, futhi i-voltage ye-voltage drop yangaphakathi yokumelana ne-I× Z nayo isesigabeni esiphambene.Bese isamba sevekhtha sika-U no-I×Z singaphansi kwe-U.

Njengoba amandla afanayo e-electromotive E njengakumthwalo we-inductive akhiqiza i-voltage ephezulu ye-generator ephumayo engu-U kumthwalo we-capacitive, isilawuli se-voltage kufanele sinciphise kakhulu insimu yamagnetic ejikelezayo.Eqinisweni, isilawuli se-voltage singase singabi nobubanzi obanele bokulawula ngokugcwele i-voltage ephumayo.Ama-rotor awo wonke ama-generator ajabule ngokuqhubekayo ohlangothini olulodwa futhi aqukethe inkambu kazibuthe ehlala njalo.Ngisho noma i-voltage regulator ivaliwe ngokugcwele, i-rotor isenayo insimu yamagnetic eyanele ukushaja umthwalo we-capacitive futhi ikhiqize i-voltage.Lesi simo sibizwa ngokuthi "ukuzikhukhumeza".Umphumela wokuzikhukhumeza ukugcwala ngokweqile noma ukuvala shaqa isilawuli se-voltage, futhi uhlelo lokuqapha i-generator lubheka ukwehluleka kwesilawuli se-voltage (okungukuthi, "ukulahlekelwa yi-excitation").Noma iyiphi yalezi zimo izobangela ukuthi ijeneretha ime.Umthwalo oxhunywe ekuphumeni kwejeneretha ungase uzimele noma uhambisane, kuye ngokuthi isikhathi nokusetha kwekhabhinethi yokushintsha okuzenzakalelayo.Kwezinye izinhlelo zokusebenza, isistimu ye-UPS iwumthwalo wokuqala oxhunywe kujeneretha ngesikhathi sokuhluleka kwamandla.Kwezinye izimo, i-UPS nomthwalo wemishini kuxhunywe ngesikhathi esisodwa.Umthwalo wemishini uvame ukuba nesixhumi sokuqala, futhi kuthatha isikhathi esithile ukuvala kabusha ngemva kokuhluleka kwamandla.Kukhona ukubambezeleka ekunxephezeleni umthwalo wemoto ongenisayo we-UPS input filter capacitor.I-UPS ngokwayo inesikhathi esibizwa ngokuthi "isiqalo esithambile", esigudluza umthwalo usuka ebhethrini uye ejeneretha ukuze kwandiswe amandla ayo okufaka.Kodwa-ke, izihlungi zokufaka ze-UPS azihlanganyeli enqubweni yokuqala ethambile.Axhunywe ekugcineni kokufaka kwe-UPS njengengxenye ye-UPS.Ngakho-ke, kwezinye izimo, umthwalo oyinhloko oxhunywe kuqala ekukhishweni kwejeneretha ngesikhathi sokuhluleka kwamandla yisihlungi sokufaka se-UPS.Anamandla amakhulu (ngezinye izikhathi anamandla).

Isixazululo sale nkinga ngokusobala ukusebenzisa ukulungiswa kwesici samandla.Ziningi izindlela zokufeza lokhu, cishe ngalezi ezilandelayo:

1. Faka ikhabethe elishintshayo elizenzakalelayo ukuze wenze umthwalo wemoto uxhumeke ngaphambi kwe-UPS.Amanye amakhabethe okushintsha angase angakwazi ukusebenzisa le ndlela.Ngaphezu kwalokho, ngesikhathi sokulungiswa, onjiniyela bezitshalo bangase badinge ukulungisa ama-UPS namajeneretha ngokuhlukana.

2. Engeza ukusabela okusebenzayo okungapheli ukuze unxephezele umthwalo we-capacitive, ngokuvamile usebenzisa i-parallel winding reactor, exhunywe ku-EG noma ibhodi elihambisanayo le-generator.Lokhu kulula kakhulu ukukufeza, futhi izindleko ziphansi.Kodwa kungakhathaliseki ukuthi kumthwalo ophezulu noma umthwalo ophansi, i-reactor ihlale idonsa yamanje futhi ithinta isici samandla okulayisha.Futhi ngokunganaki inombolo ye-UPS, inani lama-reactor lihlala lilungisiwe.

3. Faka i-reactor inductive ku-UPS ngayinye ukuze uvele unxephezele ukusabela kwe-capacitive kwe-UPS.Endabeni yomthwalo ophansi, i-contactor (uyazikhethela) ilawula okokufaka kwe-reactor.Le ndlela ye-reactor inembe kakhulu, kodwa inombolo inkulu futhi izindleko zokufakwa nokulawula ziphezulu.

4. Faka i-contactor phambi kwe-capacitor yokuhlunga bese uyinqamula lapho umthwalo uphansi.Njengoba isikhathi se-contactor kufanele sinembile futhi ukulawula kuyinkimbinkimbi, ingafakwa kuphela embonini.

Iyiphi indlela engcono kakhulu incike esimweni esikuyo kanye nokusebenza kwemishini.

Uma ufuna ukwazi okwengeziwe ngamajeneretha edizili, wamukelekile ukuthi uxhumane ne-Dingbo Power nge-imeyili dingbo@dieselgeneratortech.com, futhi sizobe sisenkonzweni yakho noma nini.