Ingabe uhlelo lwe-1500V lunganciphisa ngempumelelo izindleko nge-kilowatt-hora ngayinye yesistimu ye-photovoltaic?

Kungakhathalekile ukuthi owakwamanye amazwe noma owasekhaya, ingxenye yohlelo lokusebenza ye-1500V iyanda.Ngokwezibalo ze-IHS, ngo-2018, ukusetshenziswa kwe-1500V eziteshini zamandla zangaphandle ezinkulu zangaphandle kudlule ama-50%;ngokwezibalo zokuqala, phakathi kweqeqebana lesithathu labagijimi abaphambili ngo-2018, ingxenye yesicelo engu-1500V yayiphakathi kuka-15% no-20%.Ingabe uhlelo lwe-1500V lunganciphisa ngempumelelo izindleko nge-kilowatt-hora yephrojekthi?Leli phepha lenza ukuhlaziya okuqhathanisayo komnotho wamazinga kagesi amabili ngezibalo zethiyori kanye nedatha yamacala angempela.

1. Uhlelo oluyisisekelo lokuklama

Ukuze kuhlaziywe izinga lezindleko zohlelo lwe-1500V, kwamukelwa isikimu sokuklama esivamile, futhi izindleko zohlelo lwendabuko lwe-1000V ziqhathaniswa ngokuvumelana nenani lobunjiniyela.

Isisekelo sokubala

(1) Isiteshi sikagesi esingaphansi, indawo eyisicaba, umthamo ofakiwe awuvinjelwe indawo ewumhlaba;

(2) Izinga lokushisa eliphakeme ngokwedlulele kanye nezinga lokushisa eliphansi ngokwedlulele lendawo yephrojekthi kuzobhekwa njengokuhambisana no-40℃ kanye no -20℃.

(3) Iimingcele ebalulekile yezingxenye ezikhethiwe kanye nama-inverterszimi kanje.

Isakhiwo sokutshala imali sohlelo lwe-1500V

Ngokuhlaziya okuqhathanisayo, kutholakala ukuthi uma kuqhathaniswa nohlelo lwendabuko lwe-1000V, uhlelo lwe-1500V longa cishe u-0.1 yuan/W wezindleko zesistimu.

3. Umthelela we-1500V ekuphehleni ugesi

Isisekelo sokubala:

Ngokusebenzisa imojula efanayo, ngeke kube khona umehluko ekwenziweni kwamandla ngenxa yokuhluka kwamamojula;uma kubhekwa indawo eyisicaba, ngeke kube khona ukuvaleka kwethunzi ngenxa yezinguquko ze-topography.
Umehluko ekuphehlisweni kwamandla usekelwe kakhulu ezintweni ezimbili:ukulahlekelwa okungafani phakathi kwemojuli neyunithi yezinhlamvu, ukulahlekelwa komugqa we-DC kanye nokulahlekelwa komugqa we-AC.

1. Ukulahlekelwa ngokungafani phakathi kwezingxenye nezintambo Inani lezingxenye zochungechunge egatsheni elilodwa linyusiwe lisuka ku-22 laya ku-34. Ngenxa yokuchezuka kwamandla ka-±3W phakathi kwezingxenye ezihlukene, ukulahlekelwa kwamandla phakathi kwezingxenye zesistimu engu-1500V kuzokwanda, kodwa Azikho izibalo zobuningi. kungenziwa.Inombolo yeziteshi zokufinyelela ze-inverter eyodwa iye yanda kusukela ku-12 kuya ku-18, kodwa inani leziteshi zokulandelela ze-MPPT ze-inverter liye landiswa kusukela ku-6 kuya ku-9 ukuze kuqinisekiswe ukuthi amagatsha angu-2 ahambisana ne-1 MPPT.Ngakho-ke, phakathi kweyunithi yezinhlamvu Ukulahlekelwa kwe-MPPT ngeke kwande.

2. Ifomula yokubala ye-DC ne-AC yokulahlekelwa komugqa: Q loss=I2R=(P/U)2R= ρ(P/U)2(L/S)1)

Ithebula lokubala lokulahlekelwa komugqa we-DC: Isilinganiso sokulahleka komugqa we-DC wegatsha elilodwa

Ngokusebenzisa izibalo zethiyori ezingenhla, kutholakala ukuthi ukulahleka komugqa we-DC wesistimu ye-1500V izikhathi ezingu-0.765 zohlelo lwe-1000V, okulingana nokunciphisa ngo-23.5% ekulahlekeni kolayini we-DC.

Ithebula lokubala lokulahleka komugqa we-AC: Isilinganiso sokulahleka komugqa we-AC sesiguquli esisodwa

Ngokusebenzisa izibalo zethiyori ezingenhla, kutholakala ukuthi ukulahleka komugqa we-DC wesistimu ye-1500V izikhathi ezingu-0.263 kunohlelo lwe-1000V, okulingana nokwehliswa kuka-73.7% wokulahlekelwa kolayini we-AC.

3. Idatha yecala langempela Njengoba ukulahleka kokungafani phakathi kwezingxenye kungenakubalwa ngokomthamo, futhi indawo yangempela inesibopho esikhulu, isimo sangempela sisetshenziselwa incazelo eyengeziwe.Lesi sihloko sisebenzisa idatha yangempela yokuphehlwa kwamandla yeqoqo lesithathu lephrojekthi ehamba phambili, futhi isikhathi sokuqoqwa kwedatha sisuka ngoMeyi kuya kuJuni 2019, ingqikithi yezinyanga ezi-2 zedatha.

Ukuqhathaniswa kokukhiqizwa kwamandla phakathi kwezinhlelo ze-1000V kanye ne-1500V

Kusukela kuthebula elingenhla, kungatholakala ukuthi endaweni efanayo yephrojekthi, kusetshenziswa izingxenye ezifanayo, imikhiqizo yabakhiqizi be-inverter, kanye nendlela efanayo yokufaka ubakaki, phakathi nenkathi esukela ngoMeyi kuya kuJuni 2019, amahora okukhiqiza amandla ohlelo lwe-1500V. ziphakeme ngo-1.55% kunezohlelo lwe-1000V.Kungabonakala ukuthi nakuba ukwanda kwenani lezingxenye zochungechunge olulodwa kuzokhuphula ukulahlekelwa ukungafani phakathi kwezingxenye, kunganciphisa ukulahlekelwa komugqa we-DC cishe ngo-23.5% kanye nokulahlekelwa komugqa we-AC cishe ngo-73.7%.Uhlelo lwe-1500V lungakhuphula ukukhiqizwa kwamandla ephrojekthi.

4. Ukuhlaziya okuphelele

Ngokuhlaziya kwangaphambilini, kungatholakala ukuthi uhlelo lwe-1500V luqhathaniswa nohlelo lwendabuko lwe-1000V:

1) Ingakwaziyonga cishe u-0.1 yuan/W wezindleko zesistimu;

2) Nakuba ukwanda kwenani lezingxenye zeyunithi yezinhlamvu eyodwa kuzokhuphula ukulahlekelwa ukungafani phakathi kwezingxenye, kunganciphisa cishe u-23.5% wokulahlekelwa kolayini we-DC kanye cishe no-73.7% wokulahlekelwa komugqa we-AC, futhiuhlelo lwe-1500V luzokwandisa ukukhiqizwa kwamandla kagesi.Ngakho-ke, izindleko zikagesi zingancishiswa ngezinga elithile.Ngokusho kuka-Dong Xiaoqing, uDean we-Hebei Energy Engineering Institute, ngaphezu kwe-50% yezinhlelo zokuklama iphrojekthi ye-photovoltaic yomhlabathi eqediwe yilesi sikhungo kulo nyaka ikhethe i-1500V;kulindeleke ukuthi isabelo sika-1500V eziteshini zikagesi ezingaphansi komhlaba wonke ngo-2019 sifinyelele cishe ku-35%;izophinde ikhule ngo-2020. Inhlangano yokubonisana eyaziwa emhlabeni wonke i-IHS Markit inikeze isibikezelo esinethemba elikhulu.Embikweni wabo wokuhlaziya imakethe ye-photovoltaic ye-1500V yomhlaba wonke, baveze ukuthi isikali sesiteshi samandla se-photovoltaic se-1500V emhlabeni wonke sizodlula i-100GW eminyakeni emibili ezayo.

Isibikezelo sengxenye ye-1500V eziteshini zamandla aphansi emhlabeni jikelele

Ngokungangabazeki, njengoba imboni ye-photovoltaic yomhlaba wonke isheshisa inqubo yokuxhaswa, futhi ukuphishekela ngokweqile kwezindleko zikagesi, i-1500V njengesixazululo sezobuchwepheshe esinganciphisa izindleko zikagesi zizosetshenziswa kakhulu.

Isitoreji samandla esingu-1500V sizosetshenziswa ngokuzayo

NgoJulayi 2014, i-inverter yesistimu ye-SMA 1500V yasetshenziswa kuphrojekthi ye-photovoltaic engu-3.2MW e-Kassel Industrial Park, eJalimane.

NgoSepthemba 2014, amamojula we-photovoltaic wengilazi ephindwe kabili ye-Trina Solar athole isitifiketi sokuqala se-1500V PID esikhishwe yi-TUV Rheinland e-China.

NgoNovemba 2014, i-Longma Technology yaqeda ukuthuthukiswa kohlelo lwe-DC1500V.

Ngo-April 2015, i-TUV Rheinland Group yabamba isemina ye-2015 "Photovoltaic Modules/Parts 1500V Certification".

NgoJuni 2015, i-Projoy yethula uchungechunge lwe-PEDS lwamaswishi e-photovoltaic DC yezinhlelo ze-photovoltaic ze-1500V.

NgoJulayi 2015, Inkampani ye-Yingli yamemezela ukuthuthukiswa kohlaka lwe-aluminium enamandla kagesi yesistimu engu-1500 volts, ikakhulukazi iziteshi zamandla aphansi.

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Abakhiqizi kuzo zonke izigaba zemboni ye-photovoltaic bethula ngenkuthalo imikhiqizo yesistimu ye-1500V.Kungani i-“1500V” kukhulunywa ngayo kaningi?Ingabe inkathi yezinhlelo ze-photovoltaic ezingu-1500V ziyeza ngempela?

Sekuyisikhathi eside, izindleko zokukhiqiza amandla aphezulu kube esinye sezizathu eziyinhloko ezivimbela ukuthuthukiswa kwemboni ye-photovoltaic.Indlela yokunciphisa izindleko nge-kilowatt-hora yezinhlelo ze-photovoltaic futhi uthuthukise ukusebenza kahle kokukhiqizwa kwamandlaisibe yinkinga eyinhloko yemboni ye-photovoltaic.I-1500V kanye nezinhlelo eziphakeme nakakhulu zisho izindleko eziphansi zesistimu.Izingxenye ezinjengamamojula we-photovoltaic kanye nokushintshwa kwe-DC, ikakhulukazi ama-inverters, adlala indima ebalulekile.

Izinzuzo ze-1500V photovoltaic inverter

Ngokwandisa i-voltage yokufaka, ubude bentambo ngayinye bunganyuswa ngo-50%, okunganciphisa inani lezintambo ze-DC ezixhunywe ku-inverter kanye nenani labaguquli bebhokisi lokuhlanganisa.Ngesikhathi esifanayo, amabhokisi okuhlanganisa, ama-inverters, ama-transformers, njll. Umthamo wamandla wemishini kagesi uyanda, ivolumu iyancishiswa, futhi umthwalo wokuthutha nokugcinwa komsebenzi nawo uyancipha, okuhambisana nokwehliswa kwezindleko ze-photovoltaic. izinhlelo.

Ngokwandisa i-voltage side side, ukuminyana kwamandla we-inverter kungandiswa.Ngaphansi kwezinga elifanayo lamanje, amandla angacishe aphindwe kabili.Izinga eliphezulu lokufakwayo nelokukhiphayo linganciphisa ukulahleka kwentambo yesistimu ye-DC kanye nokulahlekelwa isiguquli, ngaleyo ndlela kwandise ukusebenza kahle kokuphehla amandla.

Ukukhethwa kwe-1500V photovoltaic inverter

Ngokombono kagesi, ukuhlangana ne-1500V kulula kunokweqa ubuchwepheshe be-1500V bemikhiqizo yamamojula.Phela, yonke imikhiqizo eshiwo ngenhla ithuthukiswa kusukela embonini evuthiwe ukusekela ama-photovoltaics.Uma kubhekwa indlela ehamba ngaphansi engu-1500VDC, ama-inverters emoto edonsayo, amadivayisi kagesi ngeke abe inkinga yokukhetha, okuhlanganisa i-Mitsubishi, i-Infineon, njll. inamadivayisi anamandla angaphezu kuka-2000V, ama-capacitor angaxhunywa ochungechungeni ukuze kukhuliswe izinga le-voltage, futhi manje nge-Projoy njll. Ngokuqaliswa kweswishi ye-1500V, abakhiqizi bezingxenye ezihlukahlukene, i-JA Solar, i-Canadian Solar, ne-Trina bonke bethule izingxenye ze-1500V.Ukukhethwa kwesistimu yonke ye-inverter ngeke kube yinkinga.

Ngokombono wephaneli yebhethri, uchungechunge lwamaphaneli angu-22 luvame ukusetshenziselwa i-1000V, futhi uchungechunge lwamaphaneli wesistimu ye-1500V kufanele ibe ngu-33. Ngokusho kwezici zokushisa zezingxenye, i-voltage yamandla aphezulu izoba cishe ku-26. -37V.Ibanga lamandla kagesi e-MPP ezingxenyeni zentambo lizoba cishe ku-850-1220V, futhi amandla kagesi aphansi kakhulu aguqulelwe ohlangothini lwe-AC ngu-810/1.414=601V.Uma kubhekwa ukuguquguquka okungu-10% kanye nasekuseni nasekuseni, indawo yokuhlala nezinye izici, ngokuvamile kuzochazwa cishe ku-450-550.Uma i-current iphansi kakhulu, i-current izoba nkulu kakhulu futhi ukushisa kuzoba kukhulu kakhulu.Endabeni ye-inverter ephakathi nendawo, i-voltage ephumayo imayelana ne-300V futhi yamanje imayelana ne-1000A ku-1000VDC, futhi i-voltage ephumayo ingu-540V ku-1500VDC, kanti okukhiphayo kwamanje kumayelana ne-1100A.Umehluko awumkhulu, ngakho izinga lamanje lokukhethwa kwedivayisi ngeke lihluke kakhulu, kodwa izinga le-voltage liyanda.Okulandelayo kuzoxoxa nge-voltage ohlangothini oluphumayo njengo-540V.

Ukusetshenziswa kwe-1500V inverter yelanga esiteshini samandla e-photovoltaic

Eziteshini zamandla amakhulu angaphansi komhlaba, iziteshi zamandla aphansi zingama-inverter ahlanzekile axhumeke kugridi, futhi ama-inverters ayinhloko asetshenziswayo aphakathi, asakazwayo kanye nama-inverters ezintambo zamandla aphezulu.Uma kusetshenziswa uhlelo lwe-1500V, ukulahleka komugqa we-DC kuzoba Nciphisa, ukusebenza kahle kwe-inverter nakho kuzokhuphuka.Ukusebenza kahle kwalo lonke uhlelo kulindeleke ukuthi kukhuphuke ngo-1.5% -2%, ngoba kuzoba ne-transformer ekhuphukayo ohlangothini oluphumayo lwe-inverter ukukhulisa amandla kagesi ukuze kudluliselwe amandla kugridi ngaphandle kwesidingo ku-Major. izinguquko ohlelweni lwesistimu.

Thatha iphrojekthi engu-1MW njengesibonelo (uchungechunge ngalunye lunamamojula angu-250W)