Iseti yeGenereyitha yeDizili ihambelana ne-UPS

Eli nqaku lihlalutya kwaye licacisa ifuthe le-UPS yegalelo lamandla kunye nesihluzo segalelo kwi ijenereyitha yamandla ukuze kucaciswe unobangela wengxaki, emva koko ufumane isisombululo.

1. Ulungelelaniso phakathi kwesethi yejenereyitha yedizili kunye ne-UPS.

Abavelisi kunye nabasebenzisi benkqubo yonikezelo lwamandla olungaphazamisekiyo kudala beqaphela iingxaki zolungelelwaniso phakathi kweeseti zejeneretha kunye ne-UPS, ngakumbi iiharmonics zangoku eziveliswa ngabahlaziyi ziveliswa kwiinkqubo zobonelelo lwamandla ezifana nolawulo lwamandla ombane weeseti zejeneretha kunye neesekethe zolungelelwaniso lwe-UPS.Imiphumo emibi yoku icace gca.Ke ngoko, iinjineli zenkqubo ye-UPS zenze icebo lokucoca igalelo kwaye liyifake kwi-UPS, lilawula ngempumelelo i-harmonics yangoku kwisicelo se-UPS.Ezi zihluzi zidlala indima ephambili ekuhambelaneni kwe-UPS kunye neeseti zejeneretha.

Phantse zonke izihluzi zegalelo zisebenzisa i-capacitors kunye ne-inductors ukuze zifunxe ezona harmonics ziyonakalisayo ngoku kwigalelo le-UPS.Uyilo lwecebo lokucoca igalelo lithathela ingqalelo ipesenti yolona phawu luphezulu olunokwenzeka lulonke lokuphazamiseka kwe-harmonic ekhoyo kwisekethe ye-UPS naphantsi komthwalo opheleleyo.Olunye uncedo lwezihluzo ezininzi kukuphucula amandla egalelo le-UPS elayishiwe.Nangona kunjalo, esinye isiphumo sokusetyenziswa kwesihluzi sokufaka kukunciphisa ukusebenza kakuhle kwe-UPS.Uninzi lwezihluzi zisebenzisa malunga ne-1% yamandla e-UPS.Uyilo lwesihluzo segalelo sihlala sifuna ulungelelwaniso phakathi kwezinto ezilungileyo nezingathandekiyo.

Ukuze kuphuculwe ukusebenza kakuhle kwenkqubo ye-UPS kangangoko kunokwenzeka, iinjineli ze-UPS zisandula ukwenza uphuculo kusetyenziso lwamandla okucoca igalelo.Ukuphuculwa kobuchule bokucoca ubukhulu becala kuxhomekeke ekusebenziseni ubuchwepheshe be-IGBT (i-Insulated Gate Transistor) kuyilo lwe-UPS.Ukusebenza okuphezulu kwe-inverter ye-IGBT kuye kwakhokelela ekuhlelweni kwakhona kwe-UPS.Isihluzo esifakiweyo sinokufunxa ezinye iiharmoni zangoku ngelixa sifunxa indawo encinci yamandla asebenzayo.Ngamafutshane, umlinganiselo wezinto ezikhuthazayo kwi-capacitive factor kwi-filter iyancitshiswa, umthamo we-UPS uyancitshiswa, kwaye ukusebenza kakuhle kuphuculwe.Izinto kwintsimi ye-UPS zibonakala zisonjululwe, kodwa ukuhambelana kwengxaki entsha kunye nejeneretha kuvele kwakhona, kuthathe indawo yengxaki endala.

2. Ingxaki yeresonance.

Ingxaki ye-capacitor self-excitation inokunyuswa okanye ifihliwe ngezinye iimeko zombane, ezifana ne-resonance series.Xa ixabiso le-ohmic le-reactance inductive ye-generator kunye nexabiso le-ohmic ye-reactivity capacitive ye-input isondelene enye kwenye, kwaye ixabiso lokumelana nenkqubo lincinci, i-oscillation iya kwenzeka, kwaye i-voltage inokugqithisa ixabiso elilinganisiweyo lamandla. inkqubo.Inkqubo ye-UPS esandula ukuyilwa ngokuyimfuneko yi-100% ye-capacitive input impedance.I-500kVA UPS inokuba namandla angama-150kvar kunye nenqaku lamandla elikufutshane no-zero.I-shunt inductors, uthotho lokukrwitshwa, kunye ne-input isolation transformers zizinto eziqhelekileyo ze-UPS, kwaye la macandelo onke ayasebenza.Ngapha koko, bona kunye nomthamo wesihluzo kunye benza ukuba i-UPS iziphathe njenge-capacitive iyonke, kwaye kusenokuba sele kukho i-oscillations ngaphakathi kwe-UPS.Ngokudityaniswa neempawu ze-capacitive zemigca yamandla exhunywe kwi-UPS, ubunzima benkqubo yonke banda kakhulu, ngaphaya kwendawo yokuhlalutya kweenjineli eziqhelekileyo.

3. Iseti yejeneretha ye-diesel kunye nokulayisha.

Iiseti zejeneretha ye-Diesel zixhomekeke kwisilawuli sombane ukulawula umbane ophumayo.I-voltage regulator ibona i-voltage yesigaba sesithathu kwaye ithelekisa ixabiso layo eliphakathi kunye nexabiso elifunekayo lombane.Umlawuli ufumana amandla kumthombo wamandla ancedisayo ngaphakathi kwijeneretha, ngokuqhelekileyo i-coaxial encinci ye-coaxial kunye nejenereyitha eyintloko, kwaye idlulisela amandla e-DC kwi-coil yokuvuselela i-magnetic field ye-rotor generator.Ikhoyili yangoku inyuka okanye iwela ukulawula intsimi yamagnetic ejikelezayo ye Ikhoyili ye-stator yejeneretha , okanye ubungakanani be-electromotive force EMF.I-flux yamagnetic ye-coil ye-stator inquma i-voltage ephumayo ye-generator.

Ukuchasana kwangaphakathi kwe-coil ye-stator yesethi ye-diesel generator imelwe yi-Z, kubandakanywa iindawo ezithintekayo kunye nezichasayo;i-electromotive force ye-generator elawulwa yi-coil yokuvuselela i-rotor imelwe ngu-E ngumthombo wombane we-AC.Kucingelwa ukuba umthwalo ungowokuthomalalisa, okwangoku ndibeka i-voltage U nge-angle ye-90 ° yesigaba sombane kumzobo wevector.Ukuba umthwalo unqandekile, i-vectors ye-U kunye nam siya kuhambelana okanye sibe kwisigaba.Ngapha koko, uninzi lwemithwalo iphakathi kokuchasa ngokusulungekileyo kunye nokunyanzeliswa ngokusulungekileyo.Ukuhla kwamandla ombane okubangelwa ngoku kudlula kwi-coil ye-stator imelwe yi-voltage vector I× Z.Ngokwenyani sisimbuku seevetha zombane ezimbini ezincinci, ukuhla kwamandla ombane kwinqanaba le-I kunye ne-inductor voltage yehla nge-90 ° ngaphambili.Kule meko, kwenzeka ukuba kwisigaba kunye ne-U. Ngenxa yokuba amandla ombane kufuneka alingane nesamba sokuhla kwamandla ombane we-generator ukumelana kwangaphakathi kunye nombane ophumayo, oko kukuthi, isixa se-vector ye-vector E=U kunye I×Z.I-voltage regulator inokulawula ngokufanelekileyo i-voltage U ngokutshintsha i-E.

Ngoku qwalasela okwenzekayo kwiimeko zangaphakathi zejeneretha xa kusetyenziswa umthwalo ococekileyo we-capacitive endaweni yomthwalo owenziweyo.Ikhoyo ngoku ngeli xesha ichasene nje nomthwalo we-inductive.I-current I ngoku ikhokelela i-vector ye-voltage ye-U, kunye ne-voltage yokumelana nokunciphisa i-vector I× Z nayo ikwisigaba esichaseneyo.Emva koko i-vector sum ye-U kunye ne-I× Z ingaphantsi kwe-U.

Ekubeni amandla e-electromotive efanayo e-E njengakumthwalo wokungenisa ivelisa i-voltage ephezulu ye-generator ephuma ku-U kumthwalo we-capacitive, umlawuli we-voltage kufuneka anciphise kakhulu intsimi yamagnetic ejikelezayo.Ngapha koko, i-voltage regulator ayinakuba noluhlu olwaneleyo lokulawula ngokupheleleyo i-voltage ephumayo.I-rotors yazo zonke iijeneretha zihlala zivuya kwicala elinye kwaye ziqulethe intsimi yamagnetic esisigxina.Nangona i-voltage regulator ivalwe ngokupheleleyo, i-rotor isenayo intsimi yamagnetic eyaneleyo yokuhlawula umthwalo we-capacitive kunye nokuvelisa i-voltage.Lo mcimbi ubizwa ngokuba yi "self-excitation".Umphumo wokuzihlaziya ukugqithisa okanye ukuvala umbane we-voltage regulator, kwaye inkqubo yokubeka iliso ye-generator ithatha njengento yokungaphumeleli kwe-voltage regulator (oko kukuthi, "ukulahleka kwe-excitation").Nayiphi na kwezi meko iya kubangela ukuba umvelisi ayeke.Umthwalo oqhagamshelwe kwimveliso yejeneretha unokuzimela okanye uhambelana, kuxhomekeke kwixesha kunye nokusekwa kwekhabhinethi yokutshintsha ngokuzenzekelayo.Kwezinye izicelo, inkqubo ye-UPS ngumthwalo wokuqala oqhagamshelwe kwijeneretha ngexesha lokusilela kwamandla.Kwezinye iimeko, i-UPS kunye nomthwalo womatshini uxhunyiwe ngexesha elifanayo.Umthwalo womatshini udla ngokuba ne-contactor yokuqala, kwaye kuthatha ixesha elithile ukuvala emva kokusilela kwamandla.Kukho ukulibaziseka ekuhlawuleni umthwalo we-inductive motor we-UPS input filter capacitor.I-UPS ngokwayo inexesha lexesha elibizwa ngokuba yi "soft start", etshintsha umthwalo ukusuka kwibhetri ukuya kwijeneretha ukunyusa amandla ayo okufakwayo.Nangona kunjalo, izihluzi ze-UPS azithathi nxaxheba kwinkqubo yokuqalisa ethambileyo.Badityaniswe kwisiphelo segalelo le-UPS njengenxalenye ye-UPS.Ke ngoko, kwezinye iimeko, umthwalo ophambili oqhagamshelwe kuqala kwimveliso yejeneretha ngexesha lokusilela kwamandla sisihluzo segalelo le-UPS.Banamandla kakhulu (ngamanye amaxesha banamandla).

Isisombululo kule ngxaki ngokucacileyo kukusebenzisa ukulungiswa kwezinto zamandla.Kukho iindlela ezininzi zokuphumeza oku, malunga noku kulandelayo:

1. Faka ikhabhathi yokutshintsha ngokuzenzekelayo ukwenza umthwalo wemoto uqhagamshelwe phambi kwe-UPS.Ezinye iikhabhinethi zokutshintsha zingenakukwazi ukuphumeza le ndlela.Ukongeza, ngexesha lolondolozo, iinjineli zezityalo zinokufuna ukulungisa ngokwahlukileyo i-UPS kunye neejenereyitha.

2. Yongeza i-react reactant esisigxina ukuhlawulela umthwalo we-capacitive, ngokuqhelekileyo usebenzisa i-parallel winding reactor, exhunywe kwi-EG okanye i-generator output parallel board.Oku kulula kakhulu ukufikelela, kwaye iindleko ziphantsi.Kodwa kungakhathaliseki ukuba kumthwalo ophezulu okanye umthwalo ophantsi, i-reactor ihlala ifunxa okwangoku kwaye ichaphazela amandla omthwalo.Kwaye kungakhathaliseki ukuba inani le-UPS, inani le-reactors lihlala lilungisiwe.

3. Fakela i-reactor inductive kwi-UPS nganye ukuhlawula nje i-capacitive reactance ye-UPS.Kwimeko yomthwalo ophantsi, i-contactor (ukhetho) ilawula igalelo le-reactor.Le ndlela ye-reactor ichaneke ngakumbi, kodwa inani likhulu kwaye ixabiso lokufakela kunye nokulawula liphezulu.

4. Faka i-contactor phambi kwe-filter capacitor kwaye uyikhuphe xa umthwalo uphantsi.Ekubeni ixesha le-contactor kufuneka lichaneke kwaye ulawulo lunzima ngakumbi, lunokufakwa kuphela kwifektri.

Yiyiphi indlela eyona nto ixhomekeke kwimeko kwisayithi kunye nokusebenza kwezixhobo.

Ukuba ufuna ukwazi ngakumbi malunga neejenereyitha zedizili, wamkelekile ukudibana neDingbo Power nge-imeyile dingbo@dieselgeneratortech.com, kwaye siya kuba kwinkonzo yakho nangaliphi na ixesha.