Isicelo se-1500Vdc kwinkqubo ye-photovoltaic
Ukunciphisa iindleko kunye nokusebenza okwandayo bekusoloko kungumkhombandlela kwimizamo yabantu yombane
Ukuhamba kwe-1500VDC kunye nokukhetha okungaphephekiyo kwenkqubo yokulingana
Ukunciphisa iindleko kunye nokusebenza okwandayo bekusoloko kungumkhombandlela kwiinzame zabantu zombane. Phakathi kwabo, indima yobuchule betekhnoloji iphambili. Ngo-2019, ngenkxaso-mali ekhawulezileyo yase China, i-1500Vdc inethemba elikhulu.
Ngokwedatha ye-IHS evela kumbutho wophando nohlalutyo, inkqubo ye-1500Vdc yacetyiswa okokuqala ngo-2012, kwaye iFirstSolar yatyale imali yokuqala ye-1500Vdc photovoltaic plant kwihlabathi ngo-2014. Iprojekthi yokuveliswa kwamandla yeGolmud 2016MW Photovoltaic yayiqhagamshelwe ngokusesikweni kwigridi yokuvelisa umbane, iphawula ukuba isicelo se-1500Vdc sasekhaya kwinkqubo ye-photovoltaic ingene ngenene kwinqanaba lezicelo ezinkulu zokubonisa. Kwiminyaka emibini kamva, kwi-30, itekhnoloji ye-1500Vdc sele isetyenzisiwe kwizinga elikhulu kumazwe aphesheya nasekhaya. Phakathi kwebhetshi yesithathu yeeprojekthi eziphambili zasekhaya eziqale ukwakhiwa kwi-2018, iprojekthi yeGolmud enexabiso eliphantsi lokubhida (i-1500 yuan / kWh), kunye neeprojekthi ze-GCL Delingha kunye neChint Baicheng zonke zamkele itekhnoloji ye-2018Vdc. Xa kuthelekiswa nenkqubo yemveli ye-0.31Vdc ye-photovoltaic, isicelo se-1500Vdc kwinkqubo ye-photovoltaic sisetyenziswe ngokubanzi kutshanje. Emva koko sinokuba nemibuzo ngokulula:
Kutheni unyusa umbane ukusuka kwi-1000Vdc ukuya kwi-1500Vdc?
Ngaphandle kwe-inverter, ngaba ezinye izixhobo zombane zinokumelana nombane ophezulu we-1500Vdc?
Isebenza njani inkqubo ye-1500Vdc emva kokuyisebenzisa?
1. Izibonelelo zobuchwephesha kunye nokungalunganga kwesicelo se-1500Vdc kwinkqubo ye-photovoltaic
Uhlalutyo lwenzuzo
1) Nciphisa inani lebhokisi lokuhlangana kunye nentambo yeDC
Kwi "Code for Design of Photovoltaic Power Plants (GB 50797-2012)", ukuthelekiswa kweemodyuli ze-photovoltaic kunye ne-inverters kufuneka zihambelane nale fomyula ilandelayo: Ngokwendlela engasentla kunye neeparameter ezifanelekileyo zamacandelo, umtya ngamnye wenkqubo ye-1000Vdc ngokubanzi zizinto ezingama-22, ngelixa intambo nganye yenkqubo ye-1500Vdc inokuvumela izinto ezingama-32.
Ukuthatha imodyuli engama-285W 2.5MW yeyunithi yokuvelisa amandla kunye ne-inverter yomtya njengomzekelo, inkqubo ye-1000Vdc:
Imitya engama-408 yeefotovoltaic, izibini ezingama-816 zesiseko semfumba
34 iiseti 75kW umtya inverter
Inkqubo ye-1500Vdc:
Amaqela angama-280 ama-photovoltaic string
Ngama-700 izibini zemfumba
Iiseti ezili-14 zee-inverters zomtya ezingama-75kW
njengoko inani leentambo linciphile, inani leentambo ze-DC eziqhagamshelwe phakathi kwamacandelo kunye neentambo ze-AC phakathi kwemitya kunye nee-inverters ziya kuncitshiswa.
2) Ukunciphisa ukulahleka komgca weDC
P = IRI = P / U
Increases U unyuka ngo 1.5 umphinda-phinde → Ndiba (1 / 1.5) → P ndiba 1 / 2.25
= R = ρL / S DC intambo L iba ngu-0.67, amaxesha ama-0.5 ayintsusa
R (1500Vdc) <0.67 R (1000Vdc)
Isishwankathelo, i-1500VdcP yenxalenye ye-DC imalunga nama-0.3 amaxesha e-1000VdcP.
3) Ukunciphisa inani elithile lobunjineli kunye nenqanaba lokusilela
Ngenxa yokuncitshiswa kwenani leentambo ze-DC kunye neebhokisi zeziphambuka, inani lamalungu edibaniso lekhebula kunye ne-junction box wiring efakiweyo ngexesha lokwakha liza kuncitshiswa, kwaye la manqaku mabini athambekele ekusileleni. Ke ngoko, i-1500Vdc inokunciphisa inqanaba lokungaphumeleli.
4) Ukunciphisa utyalomali
Ukunyusa inani lamacandelo omtya omnye kunokunciphisa iindleko zewatt enye. Umahluko ophambili linani leziseko zemfumba, ubude bekhebula emva kokudibana kweDC, kunye nenani leebhokisi zokudibanisa (embindini).
Inxulumene neskimu semitya engama-22 yenkqubo ye-1000Vdc, iskimu semitya engama-32 yenkqubo ye-1500Vdc inokugcina malunga ne-3.2 yamanqaku / W weentambo kunye neziseko zemfumba.
Uhlalutyo olungathandekiyo
1) Ukwandiswa kweemfuno zezixhobo
Xa kuthelekiswa nenkqubo ye-1000Vdc, i-voltage inyuke yaya kwi-1500Vdc inefuthe elibonakalayo kwizaphuli zesekethe, iifyuzi, izixhobo zokukhusela umbane kunye nokutshintsha umbane, kwaye ubeke phambili iimfuno eziphezulu zokumelana namandla ombane kunye nokuthembeka, kwaye ixabiso leyunithi yezixhobo ziya kunyuka .
2) Iimfuno zokhuseleko oluphezulu
Emva kokuba i-voltage inyuswe yaya kwi-1500Vdc, umngcipheko wokonakala kombane uyonyuswa, ngaloo ndlela kuphuculwa ukukhuselwa kokugquma kunye nokususwa kombane. Ukongeza, nje ukuba ingozi yenzeke kwicala le-DC, iya kujongana neengxaki zokuphela ukuphela kwe-arc. Ke ngoko, inkqubo ye-1500Vdc inyusa ukhuseleko kwinkqubo yokhuseleko.
3) Yandisa ukubakho kwesiphumo sePID
Emva kokuba iimodyuli ze-photovoltaic zidityaniswe kuthotho, ukuvuza okukhoyo okwenziwe phakathi kweeseli zemodyuli enevolthi ephezulu kunye nomhlaba ngumba obalulekileyo wesiphumo sePID. Emva kokuba ivolthi inyukile ukusuka kwi-1000Vdc ukuya kwi-1500Vdc, kuyacaca ukuba umahluko wevolthi phakathi kweseli kunye nomhlaba uyonyuka, oya kuthi wandise ukubakho kwesiphumo sePID.
4) Yandisa ilahleko efanayo
Kukho ilahleko ethile yokuthelekisa phakathi kwemitya ye-photovoltaic, ikakhulu ebangelwa zezi zizathu zilandelayo:
- Amandla ombane weemodyuli ezahlukeneyo ze-photovoltaic aya kuba nokuphambuka kwe-0 ~ 3%. Ukuqhekeka okwenziwe ngexesha lothutho kunye nofakelo kuya kubangela ukuphambuka kwamandla.
- Ukuncitshiswa okungalinganiyo kunye nokuthintela okungalinganiyo emva kofakelo kuya kubangela nokuphambuka kwamandla.
- Ukujonga ezi zinto zilapha ngasentla, ukonyusa umtya ngamnye ukusuka kumacandelo angama-22 ukuya kwizixhobo ezingama-32 kuyakonyusa ilahleko efanayo.
- Ukuphendula kwezi ngxaki zingasentla ze-1500V, emva kweminyaka ephantse ibe mibini yophando kunye nokuhlola, iinkampani zezixhobo zikwenzile ukuphucula.
Okwesibini, i-1500Vdc inkqubo ye-photovoltaic yenkqubo yezixhobo
1. Imodyuli ye-Photovoltaic
I-Solar yokuqala, iArtus, iTianhe, i-Yingli, kunye nezinye iinkampani ziye zakhokela ekusunguleni iimodyuli ze-1500Vdc ze-photovoltaic.
Ukusukela oko umhlaba wokuqala we-1500Vdc photovoltaic wamandla wagqitywa ngo-2014, umthamo wesicelo se-1500V iinkqubo uqhubekile ukwanda. Iqhutywa yile meko, umgangatho we-IEC waqala ukubandakanya ii-1500V ezinxulumene neenkcazo ekuphunyezweni komgangatho omtsha. Ngo-2016, i-IEC 61215 (ye-C-Si), i-IEC 61646 (yeefilimu ezincinci), kunye ne-IEC61730 yimigangatho yezokhuseleko ngaphantsi kwe-1500V. Le migangatho mithathu incedisa uvavanyo lwentsebenzo kunye neemfuno zovavanyo lokhuseleko lwenkqubo ye-1500V kwaye yaphula umqobo wokugqibela kwiimfuno ze-1500V, ezikhuthaza kakhulu ukuthotyelwa kwemigangatho yesikhululo samandla se-1500V.
Okwangoku, abavelisi bomgca wokuqala wasekhaya base-China basungule iimveliso ezikhulileyo ze-1500V, kubandakanya izinto ezikwicala elinye, izinto ezinamacala amabini, izinto zeglasi ezimbini, kwaye bafumene isiqinisekiso esimalunga ne-IEC.
Ukuphendula kwingxaki ye-PID yeemveliso ze-1500V, abavelisi abaphambili ngoku bathatha la manyathelo mabini alandelayo okuqinisekisa ukuba ukusebenza kwe-PID kwezinto ze-1500V kunye nezinto eziqhelekileyo ze-1000V zihlala zikwinqanaba elifanayo.
I-1) Ngokunyusa ibhokisi yokudibanisa kunye nokwenza ukuba uyilo lwecandelo lokuhlangabezana nomgama we-1500V wokuhamba kunye neemfuno zokucoca;
2) Ubungakanani bezinto ezihamba ngasemva bonyuswe nge-40% ukonyusa ubushushu kunye nokuqinisekisa ukhuseleko lwamacandelo;
Iziphumo ze-PID, umenzi ngamnye uqinisekisa ukuba phantsi kwenkqubo ye-1500V, icandelo lisaqinisekisa ukuba ukunciphisa i-PID kungaphantsi kwe-5%, kuqinisekisa ukuba ukusebenza kwe-PID yecandelo eliqhelekileyo kuhlala kwinqanaba elifanayo.
2.Inverter
Abavelisi bamazwe aphesheya abanjengo-SMA / GE / PE / INGETEAM / TEMIC ngokubanzi basungule izisombululo ze-inverter ze-1500V malunga no-2015. zezokuqala ukukhutshwa kwintengiso yase-US.
I-NB / T 32004: 2013 yinto esemgangathweni ekufuneka ihlangane neemveliso ze-inverter zasekhaya xa zithengiswa. Umda osebenzayo womgangatho ohlaziyiweyo sisinxibelelanisi sefotovoltaic esidityaniswe kumthombo wesekethe ye-PV ngombane ongagqithanga kwi-1500V DC kunye nombane we-AC ombane ongagqithanga kwi-1000V. Umgangatho ngokwawo sele ubandakanya uluhlu lwe-DC 1500V kwaye unika iimfuno zovavanyo lokubaleka kweesekethe ze-PV, ukucocwa kombane, umgama wokuhamba, amandla ombane okumelana nevolthi kunye nolunye uvavanyo.
3. Ibhokisi yokudibanisa
Imigangatho yebhokisi yokudibanisa kunye nesixhobo ngasinye esingundoqo silungile, kwaye i-1500Vdc ingene kwibhokisi yokudibanisa isiqinisekiso seCGC / GF 037: 2014 "Izixhobo zokudibanisa izixhobo zeFotovoltaic."
4. Intambo
Okwangoku, i-1500V esemgangathweni yeentambo ze-photovoltaic iye yaziswa.
5. Tshintshela kunye nokukhuselwa ngumbane
Kwimveliso ye-photovoltaic kwixesha le-1100Vdc, umbane wokuphuma we-inverter ukuya kuthi ga kwi-500Vac. Unokuboleka inkqubo esemgangathweni yokutshintsha kwe-690Vac kunye neemveliso ezixhasayo; ukusuka kwi-380Vac voltage ukuya kwi-500Vac voltage, akukho ngxaki yotshintsho luthelekisayo. Nangona kunjalo, kwithuba lokuqala lika-2015, yonke imbonakalo yefoto ye-photovoltaic kunye namandla okuhambisa amandla ayengenayo i-800Vac / 1000Vac yokuhambisa umbane kunye nezinye iinkcukacha, kukhokelela kubunzima bokuxhasa yonke imveliso kunye neendleko eziphezulu zokuxhasa.
Inkcazo ebanzi
Inkqubo ye-1500Vdc photovoltaic isetyenziswe ngokubanzi phesheya kwaye sele iyitekhnoloji yesicelo esivuthiweyo kwihlabathi liphela.
Ke ngoko, izixhobo eziphambili zenkqubo ye-photovoltaic ifezekisile ukuveliswa kobuninzi, kwaye ixabiso lihle kakhulu xa kuthelekiswa nenqanaba lokubonisa kwi-2016.
Isicelo se-1500Vdc kwinkqubo ye-photovoltaic
Njengoko sele kukhankanyiwe apha ngasentla, inkqubo ye-1500Vdc photovoltaic isetyenziswe phesheya kwangoko ngo-2014 ngenxa yexabiso eliphantsi ngokubanzi kunye nokuveliswa kwamandla okuphezulu.
Isicelo seHlabathi se-1500Vdc kwimeko yokuhlola inkqubo ye-photovoltaic
Ilanga lokuqala labhengeza ngoMeyi ka-2014 ukuba isityalo sokuqala se-1500Vdc esakhiwe eDeming, eNew Mexico sasebenza. Umthamo opheleleyo wesikhululo samandla yi-52MW, i-arrays ezingama-34 zamkela ubume be-1000Vdc, kwaye uluhlu olushiyekileyo lwamkela ubume be-1500Vdc.
I-SMA ibhengeze ngoJulayi ka-2014 ukuba umzi-mveliso wayo wamandla we-3.2MW we-photovoltaic owakhiwe eSandershauser Berg park park eNiestetal, eKassel, emantla eJamani sele isetyenzisiwe, kwaye isityalo sisebenzisa inkqubo ye-1500Vdc.
I-1500Vdc isetyenziswe ngokubanzi kwiiprojekthi zexabiso eliphantsi
Okwangoku, i-LSP iphumelele ngempumelelo I-T1 + T2 Class B + C, Class I + II PV isixhobo sokukhusela isixhobo SPD 1500Vdc, 1200Vdc, 1000Vdc, 600Vdc zisetyenziswa ngokubanzi kwimveliso yamandla elanga.
Isicelo esikhulu se-1500Vdc kwinkqubo ye-photovoltaic
Ngethuba lokuqala, iprojekthi yokuvelisa amandla ka-257 MW yeFu An Hua Hui eVietnam yayiqhagamshelwe ngempumelelo kwigridi. Zonke izisombululo ezidityanisiweyo zohlobo lwe-inVV ezili-1500V zisetyenziselwe ukufezekisa ukwamkelwa kuyilo, ulwakhiwo kunxibelelwano lwegridi. Iprojekthi ibekwe kwiDolophu yaseHuahui, kwiFuhua County, kwiPhondo lasePhu, eVietnam, kwaye yeyommandla wonxweme osembindini nasezantsi. Kuthathelwa ingqalelo imeko-bume yendawo kunye noqoqosho lweprojekthi, umthengi weprojekthi ekugqibeleni ukhethe i-inVV yohlobo lwe-inverter yokunyusa isisombululo esidityanisiweyo.
Isisombululo esithembekileyo
Kwiprojekthi yesikhululo samandla ombane se-photovoltaic, abathengi baneemfuno ezingqongqo kulwakhiwo kunye nomgangatho wemveliso. Umthamo wokufakwa kweprojekthi kwicala le-DC leprojekthi ngama-257 MW, enziwe ngeeseti ezili-1032 zeebhokisi zokudibanisa ezili-1500V DC, iiseti ezingama-86 ze-1500Vdc 2.5MW inverters esembindini, iiseti ezingama-43 ze-5MVA ezihambisa umbane ophakathi kunye nezisombululo ezihlanganisiweyo zekhonteyina Iikhabhathi zenethiwekhi zeringi, ezenza kube lula ukufakela kunye nokugunyazisa kunokunciphisa umjikelo wolwakhiwo kunye nokunciphisa iindleko zenkqubo.
Isisombululo se-1500V sidibanisa "iteknoloji enkulu"
Isisombululo esidityanisiweyo sohlobo lwe-1500V inverter yokukhulisa isisombululo esidityanisiweyo sineempawu ze-1500V, uluhlu olukhulu lwesikwere, umlinganiso wamandla aphakamileyo, inverter yamandla amakhulu, inyusa inverter yokunyusa, njl., Enciphisa iindleko zezixhobo ezinjengeentambo kunye neebhokisi zejunction. Ukunciphisa iindleko zokuqala zotyalo-mali. Ngokukodwa, uyilo lobungakanani bomgangatho ophakamileyo liphucula ngempumelelo inqanaba lokusetyenziswa komgca wokukhulisa kunye nokuseta umlinganiso wesikhundla esifanelekileyo ngokubonelela ngokusebenza ngakumbi ukwenza inkqubo ye-LCOE isebenze ngokugqibeleleyo.
Isisombululo se-1500VDC sisetyenziswa kwiiprojekthi ze-photovoltaic ezingaphezu kwe-900MW eVietnam. IVietnam Fu An Hua Hui 257MW iprojekthi yefotovoltaic yeyona projekthi inkulu yesikhululo samandla ombane. Njengokuba ibhetshi yokuqala yamaphulo amatsha omboniso wamandla eVietnam, emva kokuba iprojekthi sele iqalile ukusebenza, iyakwandisa ubume bamandla eVietnam, inciphise ingxaki yokunqongophala kwamandla kumazantsi eVietnam, kwaye ikhuthaze uphuhliso lwezoqoqosho nezentlalo eVietnam.
Ngaba isicelo se-1500Vdc kwinkqubo ye-photovoltaic isekude kwinqanaba elikhulu?
Xa kuthelekiswa ne-1000Vdc inkqubo ye-photovoltaic esetyenziswa ngokubanzi kwizikhululo zamandla ze-photovoltaic, uphando lwe-1500Vdc yesicelo kwinkqubo ye-photovoltaic ekhokelwa ngabavelisi be-inverter kutshanje ibe yindawo yetekhnoloji yeshishini.
Kulula ukuba nemibuzo enje:
Kutheni uphakamisa umbane ukusuka kwi-1000Vdc ukuya kwi-1500Vdc?
Ngaphandle kwe-inverter, ngaba ezinye izixhobo zombane zinokumelana nombane ophezulu we-1500Vdc?
Ngaba ukhona umntu osebenzisa inkqubo ye-1500Vdc ngoku? Injani impembelelo?
Izinto eziluncedo kwezobuchwephesha kunye nokungalunganga kwesicelo se-1500Vdc kwinkqubo ye-photovoltaic
1. Uhlalutyo lwenzuzo
1) Ukunciphisa ukusetyenziswa kweebhokisi zokudibanisa kunye neentambo zeDC. Umtya ngamnye wenkqubo ye-1000Vdc ngokubanzi zizinto ezingama-22, ngelixa intambo nganye yenkqubo ye-1500VDC inokuvumela izinto ezingama-32. Thatha imodyuli yokuvelisa amandla eyi-265W 1MW njengomzekelo,
Inkqubo ye-1000Vdc: i-176 imitya yeefotovoltaic kunye neebhokisi zokudibanisa ezili-12;
Inkqubo ye-1500Vdc: i-118 imitya yeefotovoltaic kunye neebhokisi zokudibanisa ezili-8;
Ke ngoko, isixa seentambo ze-DC ezivela kwiimodyuli ze-photovoltaic kwibhokisi yokudibanisa malunga namaxesha angama-0.67, kwaye isixa seentambo ze-DC ukusuka kwibhokisi yokudibanisa ukuya kwi-inverter malunga namaxesha e-0.5.
2) Ukunciphisa ukulahleka komgca DC DCP ukulahleka = I2R ikhebula I = P / U
IncreasesU inyuka nge 1.5 amaxesha → Ndiba (1 / 1.5) → P ilahleko iba ngu-1 / 2.25
Ukongeza, i-R cable = ρL / S, i-L yekhebula le-DC iba ngu-0.67, amaxesha angama-0.5 oqobo
Intambo ye-R (1500Vdc) <0.67R intambo (1000Vdc)
Isishwankathelo, ilahleko ye-1500VdcP yenxalenye ye-DC imalunga nama-0.3 amaxesha okulahleka kwe-1000VdcP.
3) Ukunciphisa inani elithile lobunjineli kunye nenqanaba lokusilela
Njengoko inani leentambo ze-DC kunye neebhokisi zokudibanisa zinciphile, inani lamalungu edibaniselwano kunye nebhokisi yokudibanisa ifakelwe ngexesha lokwakha liza kuncitshiswa, kwaye la manqaku mabini ahlala esilele. Ke ngoko, i-1500Vdc inokunciphisa inqanaba lokungaphumeleli.
2. ukuhlalutya okungalunganga
I-1) Ukunyuswa kweemfuno zezixhobo xa kuthelekiswa nenkqubo ye-1000Vdc, ukunyusa umbane ukuya kwi-1500Vdc kunefuthe elibonakalayo kwizikhuseli zesekethe, iifyuzi, umbane osisibane, kunye nokutshintsha umbane, kwaye ubeka phambili amandla ombane aphezulu kunye nokuthembeka. phucula.
2) Iimfuno zokhuselo oluphezulu Emva kokuba ivolthi inyuswe yaya kwi-1500Vdc, umngcipheko wokonakala kombane kunye nokukhutshwa kwonyuswe ukuze ukhuselo lokugquma kunye nokucoca umbane kuphuculwe. Ukongeza, ukuba ingozi yenzekile kwicala le-DC, iya kujongana nengxaki enkulu yokucima i-arc. Ke ngoko, inkqubo ye-1500Vdc iphakamisa iimfuno zenkqubo yokhuseleko lokhuseleko.
3) Ukunyusa ukusebenza kwe-PID emva kokuba iimodyuli ze-PV zidityaniswe kuthotho, ukuvuza okukhoyo okwenziwe phakathi kweeseli zeemodyuli ezinamandla aphezulu kunye nomhlaba sisizathu esibalulekileyo sesiphumo se-PID (ngenkcazo eneenkcukacha, nceda uphendule ku- "103 ”Ngasemva). Emva kokuba i-voltage inyukile ukusuka kwi-1000Vdc ukuya kwi-1500Vdc, kuyacaca ukuba umahluko wevolthi phakathi kwe-chip yebhetri kunye nomhlaba uyonyuka, oya kuthi wandise ukubakho kwesiphumo se-PID.
4) Ukunyusa ilahleko yokuthelekisa Kukho ilahleko ethile ehambelanayo phakathi kwemitya ye-photovoltaic, ebangelwa ikakhulu zezi zizathu zilandelayo:
Amandla ombane weemodyuli ezahlukeneyo ze-photovoltaic aya kuba nokuphambuka kwe-0 ~ 3%.
Ukuqhekeka okufihliweyo okwenziwe ngexesha lothutho kunye nofakelo kuya kubangela ukuphambuka kwamandla
Ukuncitshiswa okungalinganiyo kunye nokukhusela okungalinganiyo emva kofakelo kuya kubangela nokuphambuka kwamandla.
Ukujonga ezi zinto zilapha ngasentla, ukonyusa umtya ngamnye ukusuka kumacandelo angama-22 ukuya kwizixhobo ezingama-32 kuyakonyusa ilahleko efanayo.
3. Uhlalutyo olupheleleyo Kolu hlalutyo lungentla, ingakanani i-1500Vdc enokuthelekiswa ne-1000Vdc enokuthi iphucule ukusebenza kweendleko, kwaye ukubala okungaphezulu kuyafuneka.
Intshayelelo: Xa kuthelekiswa ne-1000Vdc inkqubo ye-photovoltaic esetyenziswa ngokubanzi kwizityalo zamandla e-photovoltaic, uphando lwe-1500Vdc yesicelo kwinkqubo ye-photovoltaic ekhokelwa ngabavelisi be-inverter sele iyindawo yetekhnoloji yecandelo kutshanje. Emva koko sinokuyifumana ngokulula le mibuzo.
Okwesibini, izixhobo eziphambili zenkqubo ye-photovoltaic kwi-1500Vdc
1) Iimodyuli ze-Photovoltaic Okwangoku, i-FirstSolar, Artes, Trina, Yingli, kunye nezinye iinkampani zisungule iimodyuli ze-1500Vdc photovoltaic, kubandakanya iimodyuli eziqhelekileyo kunye neemodyuli zeglasi ezimbini.
2) Inverter Okwangoku, abavelisi abaqhelekileyo basungule ii-inverters ze-1500Vdc ezinesakhono se-1MVA ~ 4MVA, esisetyenziswe kwizikhululo zamandla zokubonisa. Inqanaba lombane le-1500Vdc ligutyungelwe yimigangatho ye-IEC efanelekileyo.
I-3) Imigangatho yeebhokisi zokudibanisa kunye nezinye izinto eziphambili Iibhokisi zokudibanisa kunye nezinto eziphambili zilungiselelwe, kwaye i-1500Vdc ingene kwibhokisi yomdibaniso yesiqinisekiso seCGC / GF037: 2014 "Ukucaciswa kwezobuchwephesha kwizixhobo ezidityanisiweyo zeFotovoltaic"; I-1500Vdc icacisiwe yimigangatho emininzi ye-IEC njengodidi lwemiyalelo yevolthi ephantsi, enje ngemigangatho yesekethe ye-IEC61439-1 kunye ne-IEC60439-1, iifusiksi ze-photovoltaic ezikhethekileyo IEC60269-6, kunye nezixhobo ezikhethekileyo zokukhusela umbane ze-photovoltaic EN50539-11 / -12 .
Nangona kunjalo, ukusukela ukuba inkqubo ye-1500Vdc ye-photovoltaic isekwinqanaba lokubonisa kwaye ibango lentengiso lilinganiselwe, izixhobo ezikhankanywe apha ngasentla azikaqali ukuveliswa kwemveliso.
Isicelo se-1500Vdc kwinkqubo ye-photovoltaic
1. IMacho Springs Isikhululo soMbane oLanga
IFirstsolar yabhengeza ngoMeyi ka-2014 ukuba isikhululo samandla sokuqala se-1500Vdc sagqitywa eDeming, iNewMexico yasetyenziswa. Umthamo opheleleyo wesikhululo samandla yi-52MW, i-arrays ezingama-34 zisebenzisa ubume be-1000Vdc, kwaye uluhlu olushiyekileyo lusebenzisa i-1500Vdc.
I-SMA ibhengeze ngoJulayi ka-2014 ukuba isityalo sayo se-3.2MW sombane se-photovoltaic eSandershauser Bergindustrialpark, ipaki yemizi-mveliso eNiestetal, eKassel, emantla eJamani, sele isetyenziswa. Isityalo samandla sisebenzisa inkqubo ye-1500Vdc.
2. Amatyala esicelo e China
IGolmud Sunshine Qiheng eNtsha yaMandla iGolmud 30MW iPhotoVoltaic Project
NgoJanuwari 2016, iprojekthi yokuqala yokubonisa amandla e-1500Vdc photovoltaic projekthi, iGolmud Sunshine Qiheng New Energy Golmud 30MW photovoltaic grid-connected power projekthi, yayiqhagamshelwe ngokusesikweni kwigridi yokuphehla umbane, iphawula ukuba inkqubo ye-1500Vdc photovoltaic ingenile elona nqanaba lesicelo sokubonisa.
Ukuphuhliswa kweemveliso ezinxulumene ne-photovoltaic ezinxulumene ne-1500V sele ziqhelekile
Izixhobo ze-Photovoltaic kunye nezixhobo zombane kwiinkqubo ezikhoyo zelanga ze-photovoltaic ziyilelwe kwaye zenziwa ngokusekwe kwiimfuno ze-DC ze-1000V. Ukuze ufezekise isivuno esingcono seenkqubo ze-photovoltaic, impumelelo iyafuneka ngokungxamisekileyo kwimeko yokuncitshiswa kwenkxaso ye-photovoltaic yeendleko zayo zokuvelisa amandla kunye nokusebenza kakuhle. Ke ngoko, ukukhula kweemveliso ezinxulumene ne-photovoltaic ezi-1500V sele ziqhelekile. Izixhobo ze-1500V eziphezulu zokuhambisa umbane kunye nokuxhasa izixhobo zombane kuthetha iindleko ezisezantsi zenkqubo kunye nokusebenza okuphezulu kokuveliswa kwamandla. Ukwazisa ngesixhobo esitsha kunye netekhnoloji kunokwenza ukuba umzi mveliso we-photovoltaic ngokuthe ngcembe ulahle ukuxhomekeka kwinkxaso-mali kwaye ufezekise ukufikelela kumlinganiso we-intanethi kwangoko kwangoko. Iimfuno ze-1500V zeemodyuli ze-photovoltaic zelanga, ii-inverters, iintambo, iibhokisi zokudibanisa kunye nokwenza inkqubo isebenze ”
Izixhobo eziphambili zenkqubo ye-1500V iboniswe apha ngasentla. Iimfuno ze-1500V kwisixhobo ngasinye zitshintshile ngokufanelekileyo:
Icandelo le-1500V
Ubume beekhomponenti butshintshiwe, obufuna umgama ophezulu wokuhamba kwezinto;
• Utshintsho lwezixhobo, izinto ezandayo kunye neemfuno zovavanyo lwenqwelo-moya yangemva;
• Ukunyusa iimfuno zovavanyo lokugquma kwecandelo, ukuxhathisa amandla ombane, ukuvuza okumanzi kunye nokubetha kwentliziyo;
• Ixabiso lecandelo lisicaba kwaye ukusebenza kuphuculwe;
• Kukho imigangatho ye-IEC okwangoku ye-1500Vdc yenkqubo yenkqubo. Ezifana ne-IEC 61215 / IEC 61730;
• Inkqubo ye-1500Vdc yecandelo labavelisi abaqhelekileyo bapasile iziqinisekiso ezifanelekileyo kunye novavanyo lokusebenza kwePID.
Intambo ye-1500V DC
• Kukho iyantlukwano kwi-insulation, ubukhulu be-sheath, i-ellipticity, ukumelana nokugquma, ukongezwa kwe-thermal, isitshizi setyuwa, kunye novavanyo lokuchasana nomsi, kunye novavanyo lokutshisa umqadi.
Ibhokisi yokudibanisa eyi-1500V
• Iimfuno zovavanyo zokucoca umbane kunye nomgama wokuthambeka, amandla ombane ohamba rhoqo kunye nefuthe lokumelana namandla ombane kunye nokumelana nokugquma;
• Kukho iyantlukwano ekubanjweni ngombane, ikhefu lesekethe, iifyuzi, iingcingo, izixhobo ezinamandla ombane, izixhobo zokulwa nezixhobo, kunye nezihlanganisi;
Imigangatho yeebhokisi zokudibanisa kunye nezinto eziphambili zisendaweni.
Inverter ye-1500V
• Ukubanjwa kombane, izaphuli zesekethe, iifyuzi, nokucima umbane kwahlukile;
Ukugquma, ukucoca umbane, kunye nokuqhekeka kokuqhekeka okubangelwa kukunyuka kwamandla ombane;
• Inqanaba levolthi le-1500V ligutyungelwe yimigangatho ye-IEC efanelekileyo.
Inkqubo ye-1500V
Kuyilo lwentambo yenkqubo ye-1500V, izinto zoluhlu ngalunye lwenkqubo ye-1000V esetyenziselwa ukuba ibe yi-18-22, kwaye ngoku inkqubo ye-1500V iya kulonyusa kakhulu inani lezinto ezikwimingcelele ukuya kuma-32-34, isenza imitya emininzi incinci kwaye ibe inyani.
Inkqubo yokuveliswa kwamandla ngoku kwe-photovoltaic, i-DC esecaleni yombane we-450-1000V, ombane we-AC-270-360V; Inkqubo ye-1500V, inani lezinto ezizodwa zomtya zonyuswe nge-50%, i-DC-side voltage 900-1500V, AC-side 400-1000V, hayi kuphela ilahleko esecaleni yomda we-DC iyancipha Umlahleko womgca kwicala le-AC wehle kakhulu. Iimfuno ze-1500V zamacandelo, ii-inverters, iintambo, iibhokisi zokudibanisa kunye nokwenza inkqubo isebenze ”
Ngokwe-inverters, i-1MW inverters esembindini zazisetyenziswa ngaphambili, kwaye ngoku zinokwandiswa ziye kwii-inverters ze-2.5MW emva kokusebenzisa inkqubo ye-1500V; kwaye ombane elinganisiweyo yecala le-AC inyukile. Abaguquli bamandla afanayo kunye necala le-AC Ukuphungulwa kwemveliso yangoku kunceda ukunciphisa iindleko ze-inverter.
Ngokubala okupheleleyo, emva kokuphuculwa kobuchwephesha benkqubo ye-1500V, iindleko zenkqubo iyonke zinokucuthwa malunga neesenti ezi-2, kwaye ukusebenza kwenkqubo kungaphuculwa nge-2%. Ke ukusetyenziswa kwenkqubo ye-1500V kuluncedo olukhulu ukunciphisa iindleko zenkqubo.
Ngokusebenzisa inkqubo ye-1500V, inani lezinto kuthotho lwandayo, inani lokudibana ngokufanayo liyancipha, inani leentambo liyancipha, kunye nenani lezidibanisi kunye ne-inverters ziyancipha. Umbane unyukile, ilahleko iyancitshiswa, kwaye ukusebenza kuyaphuculwa. Ukuncitshiswa kokufakwa kunye nokugcinwa kwemithwalo yomsebenzi kunciphisa neendleko zokufakwa kunye nokugcinwa. Oku kunokunciphisa iindleko zombane wexabiso le-LCOE.
Umkhwa omkhulu! Inkqubo ye-1500V ye-photovoltaic ikhawulezisa ukufika kwexesha leparity
Kwi-2019, notshintsho kwimigaqo-nkqubo ye-photovoltaic, eli shishini libhida ukunciphisa iindleko zombane, kwaye yinto engenakuphepheka ukuya kufikelelo kwi-Intanethi olufikelelekayo. Ke ngoko, ukuvela kwezinto ezintsha zetekhnoloji kukuphumelela, ukunciphisa iindleko zombane kunye nokunciphisa ukuxhomekeka kwinkxaso-mali kuye kwaba sisikhokelo esitsha sophuhliso olusempilweni lomzi mveliso we-photovoltaic. Kwangelo xesha, i-China, njengomvelisi ophambili wehlabathi kwimveliso ye-photovoltaic, incede uninzi lwamazwe ukuba afezekise umlinganiso kwi-Intanethi, kodwa kusekude kude nomlinganiso kwi-Intanethi ngenxa yezizathu ezahlukeneyo.
Esona sizathu siphambili sokuba intengiso ye-photovoltaic yaphesheya ingafezekisa ubungakanani kukuba ukongeza kwizibonelelo zase China malunga nezemali, umhlaba, ukufikelela, ukukhanya, amaxabiso ombane, njl., Eyona nto ibaluleke ngakumbi kunye nezifundo ezifundwayo kukuba iChina ingaphezulu phambili. Umzekelo, inkqubo ye-photovoltaic enombane we-1500V. Okwangoku, iimveliso ezinxulumene nombane we-1500V ziyeyona isisombululo esiqhelekileyo kwimarike ye-photovoltaic yaphesheya. Ke ngoko, i-photovoltaics yasekhaya kufuneka ijolise kwinkqubo yenqanaba elitsha, ukukhawulezisa ukusetyenziswa kwe-1500V kunye nobunye ubuchwephesha obuphambili, ukuqonda ukuncitshiswa kweendleko, ukusebenza ngokukuko, kunye nokuphuculwa komgangatho kwizikhululo zamandla, kunye nokukhuthaza ngokubanzi umzi-mveliso we-photovoltaic ukuya kwixesha lokulingana.
Umtshangatshangiso we-1500V ulitshayile ihlabathi
Ngokwengxelo ye-IHS, inkqubo yokuqala ecetywayo yokusetyenziswa kwenkqubo ye-1500V ibuyela umva ngo-2012. Ngo-2014, iFirstSolar ityale imali kumzi-mveliso wokuqala wamandla we-1500V we-photovoltaic. Ngokwokubala kweFirstSolar: Isikhululo samandla se-photovoltaic se-1500V sinciphisa inani leesekethe ezifanayo ngokunyusa inani leemodyuli ze-photovoltaic; kunciphisa inani leebhokisi zokudibanisa kunye neentambo; Ngexesha elifanayo, xa umbane ukwanda, ilahleko yekhebula iyancitshiswa ngakumbi, kwaye ukusebenza kombane kwenkqubo kuphuculwe.
Ngo-2015, umenzi we-inverter ohamba phambili wase-China u-Sunshine Power ukhokele ekukhuthazeni izisombululo zenkqubo ngokusekwe kuyilo lwe-inverter ye-1500V kolu shishino, kodwa ngenxa yokuba amanye amacandelo axhasayo engakhange enze ikhonkco elipheleleyo lemveliso e-China, kwaye iinkampani zotyalo-mali zinolwazi olulinganiselweyo ngale Endaweni yokubeka phambili ukwanda kwamazwe aphesheya emva kokunyuswa kwamakhaya amakhulu, kuqala "kwalinqoba" ilizwe emva koko labuyela kwimakethi yaseTshayina.
Ngokombono wentengiso yehlabathi, inkqubo ye-1500V iye yaba yimeko eyimfuneko kwiiprojekthi ezinkulu ze-photovoltaic ukunciphisa iindleko kunye nokunyusa ukusebenza ngokukuko. Kumazwe anexabiso eliphantsi lombane njengeIndiya kunye neLatin America, izikhululo zamandla ombane ze-photovoltaic ezinkulu ziphantse zonke zamkele izikimu zokubhida ze-1500V; amazwe aneemarike zamandla eziphuhlisiweyo eYurophu naseMelika atshintshe i-voltage ye-DC ukusuka kwi-1000V yeenkqubo ze-photovoltaic ukuya kwi-1500V; Iimarike ezisakhulayo ezinje ngeVietnam kunye nakuMbindi Mpuma zingene ngqo kwiinkqubo ze-1500V. Kubalulekile ukuba uqaphele ukuba iprojekthi ye-photovoltaic ye-1500-volt-level isetyenziswa kwihlabathi liphela kwaye iphindaphinde isete irekhodi lehlabathi ngamaxabiso ombane asezantsi kwiigridi zombane.
E-United States, amandla afakelwe izixhobo ze-1500Vdc ngo-2016 zabalelwa kuma-30.5%. Ngo-2017, yayiphindwe kabini ukuya kuma-64.4%. Kulindeleke ukuba eli nani lifike kuma-84.20% ngo-2019. Ngokwenkampani ye-EPC yalapha: “Isikhululo samandla emhlabeni ngasinye esitsha esingu-7GW sisebenzisa i-1500V. Umzekelo, isikhululo samandla ombane se-photovoltaic sokuqala e-Wyoming, esisandula ukuqhagamshelwa kwigridi, sisebenzisa amandla elanga e-1500V isisombululo se-inverter esisembindini.
Ngokwengqikelelo, xa kuthelekiswa nenkqubo ye-1000V, ukunciphisa iindleko kunye nokunyuka kokusebenza kwe-1500V kubonakala ikakhulu:
1) Inani lezinto ezixhumeke kuthotho lonyuswe ukusuka kwiibhloko ezingama-24 / umtya ukuya kwiibhloko ezingama-34 / umtya, ukunciphisa inani lemitya. Ngokunjalo, ukusetyenziswa kweentambo ze-photovoltaic kwehle ngama-48%, kwaye indleko yezixhobo ezinjengeebhokisi zokuhlanganisa nayo incitshisiwe malunga ne-1/3, kwaye iindleko zincitshiswe malunga ne-0.05 yuan / Wp;
2) Ukwanda kwenani lezinto kuthotho kunciphisa iindleko zenkxaso, isiseko semfumba, ulwakhiwo kunye nofakelo malunga ne-0.05 yuan / Wp;
I-3) Umbane oqhagamshelwe kwigridi ye-AC yenkqubo ye-1500V inyuswe ukusuka kwi-540V ukuya kwi-800V, amanqaku aqhagamshelwe kwigridi ancitshisiwe, kwaye ilahleko yenkqubo yecala le-AC kunye neDC inokuncitshiswa nge-1 ~ 2%.
I-4) Kwimeko yokuvuthwa kweemarike zaphesheya kweelwandle, amandla afanelekileyo omdweliso omnye unokuyilwa ukuba ibe yi-6.25MW kwiinkqubo ze-1500V, kude kufike kwi-12.5MW kwezinye iindawo. Ngokwandisa umthamo woluhlu olunye, iindleko zezixhobo ze-AC ezinje ngeziguquli zinokuncitshiswa.
Ke ngoko, xa kuthelekiswa nenkqubo yemveli ye-1000V, inkqubo ye-1500V inokunciphisa iindleko nge-0.05 ~ 0.1 yuan / Wp, kwaye ukuveliswa kwamandla kungonyuka nge-1 ~ 2%.
Ukuphinda-phinda ngo “amandla” e-1500Vdc yenkqubo yentengiso yasekhaya
Xa kuthelekiswa nemarike yamanye amazwe, kwiminyaka yokuqala yeshishini le-photovoltaic laseTshayina, ngenxa yokuhanjiswa okungafakwanga kwishishini lobuchwephesha, inkqubo ye-1500V yaqala emva kwexesha kwaye ukukhula kwayo kwakucotha. Kuphela ziinkampani ezimbalwa eziphambili ezinje ngeSunshine Power ezigqibe nge-R & D kunye nokuqinisekiswa. Kodwa ngokunyuka kwenkqubo ye-1500V kwinqanaba lehlabathi, imakethi yasekhaya iyisebenzisile, kwaye iphumelele kwiziphumo ezilungileyo kuphuhliso kunye nokuyila kweenkqubo ze-1500V kunye nokusetyenziswa:
- NgoJulayi 2015, inverter yokuqala esembindini ye-1500V yaphuhliswa yaze yaveliswa nguMbane weLanga e-China wagqiba ngempumelelo uvavanyo loqhagamshelo lwegridi kwaye wavula intshayelelo yetekhnoloji ye-1500V kwintengiso yasekhaya.
- NgoJanuwari 2016, iprojekthi yokubonisa umbane yokuveliswa kwamandla yokuqala ye-1500V yayiqhagamshelwe kwigridi yokwenza umbane.
- NgoJuni 2016, kwiprojekthi yokuqala yasekhaya yaseDatong, i-1500V inverters esembindini yasetyenziswa kwiibhetshi.
- Nge-Agasti ka-2016, uSunshine Power wakhokela ekusunguleni inverter yokuqala ye-1500V yomhlaba, eqhubeka ukonyusa ukhuphiswano lwamazwe aphesheya lwee-inverters zalapha ekhaya.
Kwakuloo nyaka mnye, iprojekthi yokulinganisa inkqubo ye-1500V ye-photovoltaic yase-China yayiqhagamshelwe ngokusesikweni kwigridi yokuvelisa amandla eGolmud, eQinghai, kuphawula ukuba inkqubo ye-1500Vdc photovoltaic iqalile ukungena kwicandelo lesicelo esisebenzayo. Umthamo ofakiweyo wesikhululo samandla yi-30MW. Amandla elanga abonelela ngeseti epheleleyo yezisombululo zale projekthi, ukunciphisa iindleko zotyalo-mali nge-20%, iindleko ze-0.1 yuan / Wp, kunye nokunciphisa kakhulu ilahleko emgceni we-AC kunye ne-DC kunye nelahleko yombane esezantsi ombane.
I-1500V iyeyona nto iphambili kwintengiso yehlabathi
Inkqubo ye-1500V, eye yehlisa iindleko kunye nokusebenza kakuhle, ngokuthe ngcembe ibe lukhetho lokuqala lwezikhululo zamandla ezinkulu zomhlaba. Ngokubhekisele kuphuhliso lwexa elizayo lweenkqubo ze-1500V, i-IHS iqikelela ukuba isabelo se-inverters ze-1500V ziya kuqhubeka nokukhula ziye kwi-74% kwi-2019 kwaye iya kunyuka iye kwi-84% kwi-2020, ibe yeyona nto iphambili kushishino.
Ukusuka kwimbono ye-1500V yokufakelwa komthamo, yayiyi-2GW kuphela ngo-2016 kwaye yadlula kwi-30GW ngo-2018. Ifezekisile ukukhula okungaphezulu kwamaxesha ali-14 kwiminyaka emibini nje, kwaye kulindeleke ukuba igcine ukukhula okuzinzileyo okukhawulezayo. Kulindelwe ukuba ukuthunyelwa okwandayo kwi-2019 kunye ne-2020 kuya kuba lelo xabiso liya kudlula kwi-100GW. Kumashishini amaTshayina, i-Sunshine Power ifake ngaphezulu kwe-5GW ye-1500V inverters kwihlabathi liphela kwaye inezicwangciso zokuphehlelela umtya ohamba phambili we-1500V kunye ne-inverters esembindini kwi-2019 yokuhlangabezana nemfuno ekhulayo ngokukhawuleza yentengiso.
Ukunyusa i-voltage ye-DC ukuya kwi-1500V lutshintsho olubalulekileyo ekunciphiseni iindleko kunye nokunyusa ukusebenza ngokukuko, kwaye ngoku isisombululo esiqhelekileyo kuphuhliso lwe-photovoltaic yamanye amazwe. Ngexesha lokuncipha kwenkxaso-mali kunye nokulingana e-China, inkqubo ye-1500V iya kusetyenziswa ngakumbi nangakumbi e-China, ukukhawulezisa ukufika kwexesha le-China elibanzi
Uhlalutyo lwezoqoqosho lwe-1500V inkqubo ye-photovoltaic
Ukusuka kwi-2018, akunamsebenzi phesheya okanye ekhaya, inani lenkqubo ye-1500V iya ikhula kwaye inkulu. Ngokwezibalo ze-IHS, umthamo wesicelo se-1500V kwizikhululo zamandla amakhulu zamazwe angaphandle kumazwe angaphandle ugqithile kwi-50% kwi-2018; ngokweenkcukacha-manani zokuqala, phakathi kwebhetshi yesithathu yeembaleki zangaphambili kwi-2018, inani lezicelo ze-1500V zaziphakathi kwe-15% kunye ne-20%.
Ngaba inkqubo ye-1500V inokunciphisa ngokufanelekileyo iindleko zombane zeprojekthi? Eli phepha lenza uhlalutyo oluthelekisekayo lwezoqoqosho kumanqanaba amabini ombane ngokwezibalo zethiyori kunye nedatha yamatyala eyiyo.
I. Uyilo loyilo olusisiseko
Ukuze uhlalutye inqanaba leendleko zesicelo se-1500Vdc kwinkqubo ye-photovoltaic, iskimu yoyilo esiqhelekileyo sisetyenziselwa ukuthelekisa indleko zeprojekthi kunye neendleko zenkqubo yemveli ye-1000V.
1. indawo yokubala
1) Isikhululo samandla ombane, indawo ethe tyaba, ukufakelwa komthamo akuphelelanga kumhlaba womhlaba;
2) Ubushushu obugqithisileyo kunye nobushushu obusezantsi kakhulu kwindawo yeprojekthi ziya kuqwalaselwa ngokwe-40 ℃ kunye -20 ℃.
3) Iiparameter eziphambili zezinto ezikhethiweyo kunye nee-inverters zibonisiwe kule theyibhile ingezantsi.
2. Inkqubo yoyilo olusisiseko
1) isikimu yoyilo secandelo le-1000V
Iimodyuli ze-photovoltaic ezimacala mabini ezingama-22 310W zenza isebe elingu-6.82kW, amasebe ama-2 enza uluhlu lwesikwere, amasebe angama-240 ewonke angama-120, kwaye angena kwii-inverters ezingama-20 75kW (amaxesha ali-1.09 asasazwa ngaphezulu kwicala leDC, azuze ngasemva) Ukujonga I-15%, ngamaxesha e-1.25 ukubonelelwa ngaphezulu) ukwenza iyunithi yokuvelisa umbane ye-1.6368MW.
Icandelo lifakwe ngokuthe tye ngokungqinelana ne-4 * 11, nangaphambi nangasemva kwizibiyeli ezizinzileyo.
2) isikimu yoyilo secandelo le-1500V
Iimodyuli ze-photovoltaic ezimacala mabini ezingama-34 310W zenza isebe elili-10.54kW, amasebe ama-2 enza imatriki yesikwere, amasebe angama-324 anamaqela angama-162 ewonke, kwaye ii-inverters eziyi-18 175kW zifakelwe (amaxesha ali-1.08 ukusasazwa ngaphezulu kwicala leDC, inzuzo kwi emva kuthathelwa ingqalelo i-15%, ngamaxesha e-1.25 ngaphezulu kokubonelela) ukwenza iyunithi yokuvelisa umbane eyi-3.415MW.
Icandelo lifakelwe ngokuthe tye ngokungqinelana ne-4 * 17, nangaphambili nakwizibiyeli ezizinzileyo zangasemva nangasemva.
Okwesibini, ifuthe le-1500V kutyalo-mali lokuqala
Ngokweskimu yoyilo olungentla, uhlalutyo lokuthelekisa ubunjineli kunye neendleko zenkqubo ye-1500V kunye nenkqubo yemveli ye-1000V imi ngolu hlobo lulandelayo.
Itheyibhile 3: Ukwenziwa kotyalo-mali lwenkqubo ye-1000V
Itheyibhile 4: Ukwenziwa kotyalo-mali lwenkqubo ye-1500V
Ngokuhlalutya ngokuthelekisa, kufunyaniswa ukuba xa kuthelekiswa nenkqubo yemveli ye-1000V, inkqubo ye-1500V igcina malunga ne-0.1 yuan / W yexabiso lenkqubo.
Okwesithathu, iimpembelelo ze-1500V ekwenziweni kwamandla
Indawo yokubala:
Sebenzisa izinto ezifanayo, akusayi kubakho mahluko kuphehlelelo lwamandla ngenxa yomahluko kumacandelo; uthatha umhlaba othe tyaba, akuyi kubakho sithunzi sinokubakho ngenxa yotshintsho lomhlaba;
Umahluko wokuveliswa kwamandla ikakhulu usekwe kwizinto ezimbini: ilahleko yokungalingani phakathi kwezinto kunye nemitya, ilahleko yomgca we-DC, kunye nelahleko yomgca we-AC.
1. ukungalingani kokulahleka phakathi kwezinto kunye nemitya
Inani lezinto ezilandelelanayo zesebe elinye lenyusiwe ukusuka kuma-22 ukuya kuma-34. Ngenxa yokuphambuka kwamandla ± 3W phakathi kwamacandelo ahlukeneyo, ilahleko yamandla phakathi kwenkqubo ye-1500V iza kunyuka, kodwa ayinakubalwa ngokobungakanani.
Inani leendlela zokungena kwi-inverter enye lenyuswe ukusuka kwi-12 ukuya kwi-18, kodwa inani leendlela zokulandela umkhondo ze-MPPT zonyuswe ukusuka kwi-6 ukuya kwi-9 ukuqinisekisa ukuba amasebe ama-2 ahambelana ne-1 MPPT. Ilahleko ye-MPPT ayonyuki.
2. Ukulahleka kwemigca ye-DC kunye ne-AC
Ifomula yokubala yokulahleka komgca
Q ukulahleka = I2R = (P / U) 2R = ρ (P / U) 2 (L / S)
1) Ukubalwa kwelahleko yomgca weDC
Itafile: Umda we-DC wokulahleka komda wesebe elinye
Ngokwa kubalo lwethiyori lungasentla, kufumaniseka ukuba ukulahleka komgca we-DC yenkqubo ye-1500V ngamaxesha angama-0.765 kule nkqubo ye-1000V, elingana nokunciphisa ilahleko yomgca we-DC ngama-23.5%.
2) Ukubalwa kokulahleka komgca we-AC
Itheyibhile: Umda we-AC wokulahleka komgca we-inverter enye
Ngokwezi zibalo zingasentla, kufumaniseka ukuba ukulahleka komgca wenkqubo ye-1500V ngamaxesha angama-0.263 kunaleyo yenkqubo ye-1000V, elingana nokunciphisa ilahleko ye-AC nge-73.7%.
3) Eyona datha yamatyala
Kuba ilahleko yokungalingani phakathi kwamacandelo ayinakubalwa ngokobungakanani, kwaye eyona meko iyiyo inoxanduva, elona tyala liya kusetyenziselwa inkcazo engaphezulu.
Eli nqaku lisebenzisa idatha yokwenyani yamandla ebhetshi yesithathu yeprojekthi yembaleki yangaphambili. Ixesha lokuqokelelwa kwedatha liqala ngoMeyi ukuya kuJuni 2019, iyonke iinyanga ezi-2 zedatha.
Itheyibhile: Thelekisa ukuveliswa kwamandla phakathi kwe-1000V kunye ne-1500V iinkqubo
Ukusuka kwitafile engentla, kunokufumaneka ukuba kwakule ndawo inye yeprojekthi, kusetyenziswa izinto ezifanayo, iimveliso zabavelisi be-inverter, kunye nendlela enye yokufaka isibiyeli, ngoMeyi ukuya kuJuni 2019, iiyure zokuvelisa amandla zenkqubo ye-1500V yayiyi-1.55% ngaphezulu kwenkqubo ye-1000V.
Kuyabonakala ukuba nangona ukonyuka kwenani lezinto ezizodwa zomtya kuzonyusa ilahleko yokungalingani phakathi kwezinto kuba inokunciphisa ukulahleka komgca we-DC malunga ne-23.5% kunye nelahleko yomgca we-AC malunga ne-73.7%, inkqubo ye-1500V inokuyonyusa Ukuveliswa kwamandla kweprojekthi.
Okwesine, uhlalutyo olubanzi
Ngohlalutyo olungentla, sinokufumanisa ukuba xa kuthelekiswa nenkqubo yemveli ye-1000V, inkqubo ye-1500V,
1) Ngaba ukonga malunga ne-0.1 yuan / W iindleko zenkqubo;
2) Nangona ukonyuka kwenani lamacandelo omtya omnye kuyonyusa ilahleko yokungalingani phakathi kwamacandelo, kodwa ngenxa yokuba inokunciphisa ukulahleka komgca we-DC malunga ne-23.5% kunye nelahleko yomgca we-AC malunga ne-73.7%, inkqubo ye-1500V iya kuyonyusa Ukuveliswa kwamandla kweprojekthi.
Ke ngoko, isicelo se-1500Vdc kwinkqubo ye-photovoltaic indleko zamandla zinokuncitshiswa ukuya kuthi ga kwinqanaba elithile.
Ngokuka-Dong Xiaoqing, umongameli we-Hebei Energy Engineering Institute, ngaphezulu kwe-50% yezikimu zoyilo zeprojekti zomhlaba ezigqitywe liziko elikhethiweyo le-1500V; kulindeleke ukuba isabelo sikazwelonke se-1500V sezikhululo zamandla ombane ngo-2019 sizakufikelela kwi-35%; iya konyuswa ngakumbi ngo-2020.
IHS Markit, iarhente eyaziwa ngokuba yi-arhente yamanye amazwe inike ingxelo ethembekileyo. Kwingxelo yabo yohlalutyo lwentengiso lwe-1500V lwehlabathi jikelele, bachaze ukuba isikali se-1500V se-photovoltaic samandla ombane siza kudlula i-100GW kule minyaka mibini izayo.
Umzobo: Uqikelelo lwenani le-1500V kwizikhululo zamandla zomhlaba
Ngaphandle kwamathandabuzo, njengoko inkqubo yokuxhasa ngezimali ishishini le-photovoltaic ikhawulezisa, kunye nelokugqibela elokufuna iindleko zombane, i-1500V, njengesisombululo sobuchwephesha esinokunciphisa iindleko zombane, iya kusetyenziswa ngokungaphaya.
