1500Vdc daim ntawv thov hauv lub tshuab photovoltaic
Txo cov nqi thiab nce kev ua tau zoo yeej ib txwm yog kev taw qhia ntawm hluav taws xob cov neeg siv zog
1500VDC sib thiab tsis paub xaiv xaiv parity zog
Txo cov nqi thiab nce kev ua tau zoo yeej ib txwm muaj kev taw qhia ntawm Electric Cov neeg siv zog. Ntawm lawv, txoj haujlwm ntawm thev naus laus zis yog qhov tseem ceeb. Xyoo 2019, nrog Tuam Tshoj cov kev pabcuam ceev, 1500Vdc muaj kev cia siab.
Raws li cov ntaub ntawv IHS los ntawm cov koom haum tshawb nrhiav thiab txheeb xyuas, 1500Vdc qhov system tau npaj ua ntej xyoo 2012, thiab FirstSolar tau nqis peev thawj 1500Vdc photovoltaic fais fab nroj tsuag hauv lub ntiaj teb xyoo 2014. Lub Ib Hlis 2016, thawj lub tebchaws 1500Vdc ua haujlwm qhia pom Golmud Sunshine Qiheng Tshiab Zog Golmud 30MW Photovoltaic Lub Hwjchim Tsim Hluav Taws Xob tau tsim ua tiav txuas rau kab sib chaws rau lub zog tsim hluav taws xob, khij tias qhov kev thov ntawm 1500Vdc hauv lub tshuab photovoltaic tau nkag mus rau theem ntawm kev ua haujlwm loj ntawm cov qauv siv. Ob xyoos tom qab, xyoo 2018, 1500Vdc thev naus laus zis tau thov nyob thoob plaws hauv ntiaj teb thiab txawv teb chaws. Ntawm cov pawg thib peb ntawm cov kev ua thawj coj hauv tsev uas tau pib ua kev tsim kho xyoo 2018, qhov project Golmud nrog cov nqi twv qis tshaj plaws (0.31 yuan / kWh), nrog rau GCL Delingha thiab Chint Baicheng cov phiaj xwm tau tag nrho cov cuab yeej technology 1500Vdc. Piv nrog rau txheej txheem ntawm 1000Vdc photovoltaic system, daim ntawv thov 11500Vdc hauv cov tshuab photovoltaic tau siv dav dav tsis ntev los no. Tom qab ntawd peb tuaj yeem yooj yim muaj cov lus nug no:
Vim li cas nce lub voltage ntawm 1000Vdc mus rau 1500Vdc?
Tshwj tsis yog lub inverter, puas tuaj yeem lwm cov cuab yeej hluav taws xob tiv taus qhov hluav taws xob siab ntawm 1500Vdc?
Zoo npaum li cas ntawm 1500Vdc system tom qab siv?
1. Cov txiaj ntsig kev ua haujlwm thiab qhov tsis zoo ntawm 1500Vdc daim ntawv thov hauv lub tshuab photovoltaic
tsom xam zoo dua
1) Txo cov nqi ntawm cov hlws ris lub thawv thiab DC cable
Hauv "Txoj Cai rau Kev Tsim Kho Photovoltaic Cov Nroj Tsuag Hluav Taws Xob (GB 50797-2012)", qhov sib txuam ntawm photovoltaic modules thiab cov inverters yuav tsum ua raws li cov qauv hauv qab no: Raws li cov qauv hais saum toj no thiab cov cuam tshuam ntawm cov khoom sib txuas, txhua txoj hlua ntawm 1000Vdc system feem ntau yog 22 ntu, thaum txhua txoj hlua ntawm 1500Vdc system tuaj yeem tso 32 yam.
Noj 285W module 2.5MW lub zog tsim hluav taws xob thiab cov hlua inverter ua piv txwv, 1000Vdc system:
408 photovoltaic cov hlua, 816 khub ntawm cov pawg pob
34 teeb ntawm 75kW txoj hlua inverter
Qhov system 1500Vdc:
280 photovoltaic pab pawg muaj txoj hlua
700 khub ntawm cov pawg pawg
14 teeb ntawm 75kW txoj hlua inverters
raws li cov xov tooj ntawm cov hlua txo, tus nqi ntawm DC cables txuas ntawm lub Cheebtsam thiab AC cable ntawm cov hlua thiab siv inverters yuav raug txo kom tsawg.
2) Txo DC kab poob
P = IRI = P / U
U nce ntxiv li 1.5 zaug → Kuv ua (1 / 1.5) → P ua 1 / 2.25
∵ R = ρL / S DC cable L dhau los ua 0.67, 0.5 npaug qub
∴ R (1500Vdc) <0.67 R (1000Vdc)
Hauv txoj kev xaus, 1500VdcP ntawm DC ib feem yog kwv yees li 0.3 npaug ntawm 1000VdcP.
3) Txo kom tsawg dua qee qhov kev tsim kho thiab tsis ua haujlwm
Vim tias yuav txo tau cov xov tooj ntawm DC cable thiab lub thawv hlws ris, cov xov tooj ntawm cov xov txuas thiab lub thawv hluav taws xob tau teeb tsa thaum lub sijhawm kev tsim kho yuav raug txo kom tsawg, thiab ob lub ntsiab lus no muaj feem cuam tshuam. Yog li, 1500Vdc yuav txo qee qhov tsis ua tiav.
4) Txo kev nqis peev
Kev nce zuj zus ntawm cov xov tooj ntawm txoj hlua ib leeg tuaj yeem txo tus nqi ntawm ib watt. Lub ntsiab sib txawv yog cov naj npawb ntawm cov pawg teeb, qhov ntev ntawm cov cable tom qab DC sib dhos, thiab tus naj npawb ntawm cov thawv hlws ris (nruab nrab).
Txheeb ze rau 22 txoj hlua txheej txheem ntawm 1000Vdc system, 32-txoj kab xwm ntawm 1500Vdc qhov system tuaj yeem txuag tau txog 3.2 cov ntsiab lus / W rau cov kab txuas thiab pawg.
Kev ntsuas tsis zoo
1) Cov khoom siv ntau zog xav tau
Piv nrog rau 1000Vdc system, qhov hluav taws xob tau nce mus rau 1500Vdc muaj qhov cuam tshuam loj ntawm cov hluav taws xob, cov fuses, cov khoom siv hluav taws xob tiv thaiv thiab hloov cov khoom siv fais fab, thiab muab tso rau pem hauv ntej siab dua rau kev tiv thaiv voltage thiab kev ntseeg tau, thiab tus nqi ntawm cov cuab yeej yuav raug nce siab ntxiv Cov.
2) Yuav tsum muaj kev nyab xeeb siab dua
Tom qab qhov voltage tau nce mus rau 1500Vdc, kev pheej hmoo ntawm hluav taws xob tawg tau nce, yog li txhim kho kev tiv thaiv hluav taws xob thiab tiv thaiv hluav taws xob. Ntxiv rau, thaum muaj xwm txheej tshwm sim nyob rau sab DC, nws yuav ntsib teeb meem loj dua DC arc teeb meem tsis muaj teeb meem. Yog li, 1500Vdc qhov system ua kom cov kab ke kev tiv thaiv kev tiv thaiv kev ruaj ntseg yuav tsum muaj.
3) Ua kom muaj kev cuam tshuam PID ntau ntxiv
Tom qab cov photovoltaic modules txuas nrog hauv series, cov xaim hluav taws xob tam sim no tsim nyob nruab nrab ntawm lub hlwb ntawm qhov ntsuas hluav taws xob siab thiab hauv av yog qhov tseem ceeb ntawm PID cov nyhuv. Tom qab qhov hluav taws xob tau nce los ntawm 1000Vdc mus rau 1500Vdc, nws pom tseeb tias qhov hluav taws xob qhov sib txawv ntawm lub cell thiab hauv av yuav nce siab, uas yuav ua rau kom muaj qhov cuam tshuam PID.
4) Ua rau muaj kev sib txuam ntxiv
Muaj qee qhov poob ntawm kev txuam ntawm photovoltaic cov hlua, feem ntau tshwm sim los ntawm cov hauv qab no:
- Lub zog ntawm lub zog ntawm cov photovoltaic sib txawv yuav muaj qhov sib txawv ntawm 0 ~ 3%. Cov kab nrib pleev tsim thaum lub sijhawm kev thauj mus los thiab teeb tsa yuav ua rau lub hwj chim tsis sib txawv.
- Tsis pom zoo thiab qhov thaiv tsis zoo tom qab kev teeb tsa yuav ua rau lub zog hluav taws xob tsis zoo.
- Hauv kev pom ntawm cov xwm txheej saum toj no, nce txhua txoj hlua los ntawm 22 Cheebtsam mus rau 32 Cheebtsam yuav pom tseeb nce cov txuam poob.
- Teb rau cov teeb meem saum toj no ntawm 1500V, tom qab ze li ob xyoos ntawm kev tshawb nrhiav thiab tshawb nrhiav, cov tuam txhab cov cuab yeej cuab tam kuj tau ua qee qhov kev txhim kho.
Thib ob, 1500Vdc photovoltaic system cov khoom siv tseem ceeb
1. Photovoltaic module
Thawj Hnub Ci, Artus, Tianhe, Yingli, thiab lwm lub tuam txhab tau ua tus coj ua ntej 1500Vdc photovoltaic modules.
Txij li lub ntiaj teb thawj zaug 1500Vdc photovoltaic fais fab nroj tsuag tau ua tiav rau xyoo 2014, daim ntawv thov ntim ntawm 1500V tshuab tau txuas ntxiv nthuav dav. Tsav los ntawm cov xwm txheej no, IEC tus qauv pib teeb tsa 1500V ntsig txog kev paub tshwj xeeb rau hauv kev siv ntawm tus txheej txheem tshiab. Hauv xyoo 2016, IEC 61215 (rau C-Si), IEC 61646 (rau cov yeeb yaj kiab nyias), thiab IEC61730 yog cov qauv tivthaiv kev nyab xeeb qis dua 1500V. Peb tus qauv no ua tiav cov qauv ntsuas kev ua haujlwm thiab kev nyab xeeb kev kuaj ntsuas ntawm 1500V tivthaiv qhov system thiab ua txhaum lub zog kawg ntawm 1500V cov cai, uas zoo heev txhawb kev ua raws li 1500V lub chaw nres tsheb fais fab qauv.
Tam sim no, Tuam Tshoj tus thawj tsim kev lag luam hauv tebchaws tau tsim cov khoom lag luam 1500V, suav nrog cov khoom ib cheeb tsam, ob tog ua ke, muab ob npaug rau iav, thiab tau txais IEC ntsig txog cov ntawv pov thawj.
Kev teb rau PID qhov teeb meem ntawm 1500V cov khoom lag luam, cov tshuab tsim hluav taws xob tam sim no coj los ntsuas ob yam hauv qab no kom ntseeg tau tias qhov PID ntawm 1500V cov khoom siv thiab cov khoom siv tiv thaiv 1000V tseem nyob rau tib theem.
1) Los txhim kho lub thawv hlws ris thiab ua kom zoo dua ntawm cov qauv tsim kom tsim kom tau raws li 1500V qhov chaw nyob deb thiab ua kom pom tseeb;
2) Lub thickness ntawm cov khoom siv rov qab yog nce ntxiv 40% los txhim kho rwb thaiv tsev thiab ua kom muaj kev nyab xeeb ntawm cov khoom;
Txog cov txiaj ntsig PID, txhua qhov chaw tsim khoom tau lees tias nyob rau hauv 1500V qhov system, cov khoom tseem lees tias PID attenuation tsawg dua 5%, kom ntseeg tau tias PID ua tau zoo ntawm cov khoom sib txuas tseem nyob rau tib theem.
2. Khoom siv hluav taws xob
Cov tsim khoom lag luam txawv teb chaws xws li SMA / GE / PE / INGETEAM / TEMIC feem ntau pib 1500V inverter kev daws teeb meem nyob ib ncig ntawm 2015. Ntau lub tuam txhab hauv tsev ua ntej tau tsim cov khoom lag luam raws li 1500V series, xws li Sungrow SG3125, Huawei's SUN2000HA series, thiab lwm yam, thiab yog cov uas tso tawm thawj zaug hauv Asmeskas khw.
NB / T 32004: 2013 yog tus qauv uas cov khoom lag luam hauv inverter yuav tsum ua tau thaum lawv muaj kev ua lag luam. Qhov siv tau ntawm tus qauv hloov kho tshiab yog photovoltaic daim phiaj-txuas rau inverter txuas nrog rau PV qhov hluav taws xob Circuit Court nrog qhov hluav taws xob tsis tshaj li 1500V DC thiab ib qho AC cov khoom hluav taws xob tsis tshaj li 1000V. Tus txheej txheem nws tus kheej twb muaj DC 1500V ntau thiab muab cov ntawv xeem rau PV Circuit Court overvoltage, tshem tawm hluav taws xob, qhov chaw nkag mus, qhov deb zog, lub zog siv hluav taws xob, thiab lwm yam kev ntsuas.
3. Lub thawv sib txuas
Cov qauv rau lub thawv combiner thiab txhua lub cuab yeej tseem ceeb tau npaj txhij, thiab 1500Vdc tau nkag mus rau hauv lub thawv combiner daim ntawv pov thawj tus qauv ntawm CGC / GF 037: 2014 "Photovoltaic combiner khoom technical specifications".
4. Siv hlua hlau
Tam sim no, tus qauv 1500V rau photovoltaic cables kuj tau ua tswvcuab.
5. Hloov thiab tiv thaiv xob laim
Hauv kev lag luam photovoltaic hauv 1100Vdc era, qhov tso zis hluav taws xob ntawm lub inverter yog txog li 500Vac. Koj tuaj yeem qiv qhov 690Vac xa mus hloov cov qauv txheem thiab txhawb cov khoom lag luam; los ntawm 380Vac voltage rau 500Vac voltage, tsis muaj kev hloov txuam teeb meem. Txawm li cas los xij, nyob rau lub sijhawm thaum ntxov ntawm 2015, tag nrho photovoltaic thiab lub zog faib hluav taws xob tsis muaj 800Vac / 1000Vac hloov hluav taws xob thiab lwm yam tshwj xeeb, ua rau muaj kev nyuaj los txhawb tag nrho cov khoom thiab tus nqi siab txhawb nqa.
Cov lus piav qhia dav dav
Lub 1500Vdc photovoltaic system tau siv dav hauv txawv teb chaws thiab yog twb tau txais daim ntawv thov kev paub tab siv tshuab thoob ntiaj teb.
Yog li ntawd, cov cuab yeej tseem ceeb ntawm cov tshuab photovoltaic tau ua tiav cov khoom lag luam ntau lawm, thiab tus nqi tau poob qis piv rau kev ua qauv qhia hauv xyoo 2016.
1500Vdc daim ntawv thov hauv lub tshuab photovoltaic
Raws li tau hais los saum toj no, 1500Vdc photovoltaic system tau thov siv txawv teb chaws thaum ntxov li xyoo 2014 vim tias nws cov nqi qis thiab kev tsim hluav taws xob siab.
Ntiaj teb 1500Vdc daim ntawv thov nyob rau hauv photovoltaic system tshawb xyuas cov ntaub ntawv
Thawj hnub ci tshaj tawm hauv lub Tsib Hlis 2014 tias thawj 1500Vdc lub zog tsim hluav taws xob hauv Deming, New Mexico tau muab tso rau hauv kev siv. Tag nrho cov peev txheej ntawm qhov chaw nres tsheb fais fab yog 52MW, 34 arrays siv 1000Vdc tus qauv, thiab cov chaw seem ntxiv txais yuav 1500Vdc qauv.
SMA tshaj tawm thaum Lub Xya Hli 2014 tias nws lub 3.2MW photovoltaic fais fab nroj tsuag tau tsim hauv Sandershauser Berg industrial park hauv Niestetal, Kassel, sab qaum teb Tebchaws Yelemees tau muab tso rau, thiab lub chaw siv hluav taws xob siv hluav taws xob 1500Vdc system.
1500Vdc tau siv dav hauv cov phiaj xwm qis
Txog rau tam sim no, LSP tau ua tiav zoo T1 + T2 Chav B + C, Chav I + II PV txheej tiv thaiv cov khoom tiv thaiv SPD 1500Vdc, 1200Vdc, 1000Vdc, 600Vdc yog dav siv nyob rau hauv hnub ci photovoltaic zog tiam.
Loj-teev 1500Vdc daim ntawv thov hauv cov tshuab photovoltaic
Thawj thawj zaug, 257 MW photovoltaic lub zog tsim hluav taws xob project ntawm Fu An Hua Hui hauv Nyab Laj tau ua tiav txuas nrog rau kab sib chaws. Txhua lub 1500V ntim-hom inverter kauj ruam cov kev daws teeb meem tau siv los ua tiav qhov kev lees txais los ntawm kev tsim, kev tsim kho mus rau kab sib txuas. Lub phiaj xwm nyob hauv Huahui Town, Fuhua Nroog, Phu An xeev, Nyab Laj, thiab nws yog thaj chaw nruab nrab thiab thaj chaw dej hiav txwv. Coj mus rau hauv thaj chaw ib puag ncig hauv cheeb tsam thiab kev lag luam ntawm txoj haujlwm, tus neeg siv tes num qhov kawg xaiv 1500V ntim-hom inverter txhawb kev sib xyaw ua ke.
Txhim khu kev qha daws teeb meem
Hauv kev ua qauv qhia kev teeb tsa lub chaw nres tsheb fais fab, cov neeg siv khoom muaj kev cai nruj rau kev tsim kho thiab cov khoom lag luam zoo. Cov teeb meem muaj peev xwm ntawm cov txheej txheem ntawm DC sab ntawm lub phiaj xwm yog 257 MW, uas yog tsim los ntawm 1032 teeb ntawm 1500V DC lub cav sib txuas, 86 teeb ntawm 1500Vdc 2.5MW centralized inverters, 43 teeb ntawm 5MVA nruab nrab voltage transformers thiab ntim ntim cov kev daws teeb meem rau lub nplhaib cov kab hluav taws xob, ua kom yooj yim Kev teeb tsa thiab kev ua haujlwm tuaj yeem ua rau lub voj voog kev tsim kho luv luv thiab txo tus nqi tsim.
Kev daws teeb meem 1500V ua ke “thev naus laus zis loj”
Lub 1500V ntim-hom inverter boost sib xyaw daws muaj cov yam ntxwv ntawm 1500V, cov square loj loj, qhov muaj peev xwm piv, lub zog siab inverter, kev sib xyaw inverter txhawb, thiab lwm yam, uas txo cov nqi ntawm cov khoom siv xws li cov thawv thiab hlws ris thawv. Txo txo cov nqi pib nqis peev. Hauv tshwj xeeb, qhov siab qhov tseem ceeb qauv tsim tau zoo txhim kho tag nrho cov kab txhawb kev siv tus nqi thiab teeb tsa tus qauv tsim nyog muaj peev xwm los ntawm kev nquag dhau los ua kom cov kab ke LCOE zoo dua.
Lub 1500VDC daws tau siv hauv photovoltaic cov haujlwm ntawm ntau dua 900MW hauv Nyab Laj. Nyab Laj Fu An Hua Hui 257MW photovoltaic qhov project yog qhov loj tshaj plaws ntawm photovoltaic fais fab nres chaw nres tsheb project. Raws li thawj cov kev teeb tsa ua haujlwm tshiab hauv lub zog hauv tebchaws Nyab Laj, tom qab qhov phiaj xwm tau ua tiav, nws yuav ua kom muaj lub zog zoo ntawm Nyab Laj, yooj yim lub zog hluav taws xob tsis txaus nyob rau yav qab teb Nyab Laj, thiab txhawb kev lag luam thiab kev txhim kho hauv Nyab Laj ntawm qhov tseem ceeb.
Puas yog 1500Vdc daim ntawv thov nyob rau hauv photovoltaic system tseem nyob deb ntawm kev teev npe loj?
Piv nrog rau 1000Vdc photovoltaic system siv dav hauv photovoltaic zog noj, kev tshawb fawb ntawm 1500Vdc daim ntawv thov hauv photovoltaic system coj los ntawm inverter tuam ntxhab tau dhau los ua kev lag luam thev naus laus zis.
Nws yooj yim kom muaj lus nug li no:
Vim li cas nce qhov voltage ntawm 1000Vdc mus rau 1500Vdc?
Tshwj tsis yog lub inverter, puas tuaj yeem lwm cov cuab yeej hluav taws xob tiv taus qhov hluav taws xob siab ntawm 1500Vdc?
Puas yog ib tus neeg siv lub 1500Vdc system tam sim no? Cov nyhuv li cas?
Cov Txuj Ci Kom Zoo Dua thiab Kev Tsis Zoo ntawm 1500Vdc daim ntawv thov hauv lub tshuab photovoltaic
1. Kev Tshawb Xyuas Kom Zoo Tawm
1) Txo kev siv ntawm lub thawv sib txuas thiab DC cable. Ib txoj hlua ntawm lub 1000Vdc system feem ntau 22 tivthaiv, thaum txhua txoj hlua ntawm 1500VDC system tuaj yeem tso 32 yam. Coj 265W module 1MW lub zog tsim hluav taws xob hluav taws xob ua piv txwv,
1000Vdc system: 176 cov hlua photovoltaic thiab 12 lub thawv sib txuas;
1500Vdc system: 118 cov hlua photovoltaic thiab 8 lub thawv sib txuas;
Yog li ntawd, tus nqi ntawm DC cables los ntawm photovoltaic modules mus rau lub thawv combiner yog li 0.67 zaus, thiab tus nqi ntawm DC cables los ntawm lub thawv combiner mus rau inverter yog li 0.5 npaug.
2) Txo DC txoj kab poob ∵P poob = I2R cable I = P / U
U nce li ntawm 1.5 zaug → Kuv ua (1 / 1.5) → P poob ua 1 / 2.25
Ntxiv rau, R cable = ρL / S, Qhov L ntawm DC cable ua 0.67, 0.5 npaug ntawm qhov qub
∴R cable (1500Vdc) <0.67R cable (1000Vdc)
Hauv cov ntsiab lus, qhov 1500VdcP poob ntawm DC ib feem yog kwv yees li 0.3 npaug ntawm 1000VdcP poob.
3) Txo kom tsawg dua qee qhov kev tsim kho thiab tsis ua haujlwm
Raws li cov xov tooj ntawm DC cables thiab lub thawv sib txuas tau txo, tus naj npawb ntawm cov pob txuas txuas thiab lub thawv hluav taws xob tau teeb tsa thaum lub sijhawm kev tsim kho yuav raug txo kom tsawg, thiab ob lub ntsiab lus no muaj feem cuam tshuam. Yog li, 1500Vdc yuav txo qee qhov tsis ua tiav.
2. Qhov ntsuas tsis zoo
1) Kev nce ntawm cov khoom siv Yuav tsum piv nrog 1000Vdc qhov system, ua kom lub zog mus rau 1500Vdc muaj qhov cuam tshuam loj ntawm cov hluav taws xob, cov fuses, cov khoom siv hluav taws xob, thiab cov hloov hluav taws xob, thiab tso cov hluav taws xob ntau dua thiab kev cia siab tau. txhim kho.
2) Yuav tsum muaj kev nyab xeeb siab dua Tom qab qhov hluav taws xob tau nce mus rau 1500Vdc, qhov txaus ntshai ntawm hluav taws xob tawg thiab tawm los yog nce ntxiv yog li kev tiv thaiv rwb thaiv tsev thiab hluav taws xob hluav taws xob yuav tsum tau txhim kho. Ib qho ntxiv, yog tias muaj xwm txheej tshwm sim nyob rau sab DC, nws yuav ntsib ntau qhov teeb meem loj dua DC arc teeb meem. Yog li no, 1500Vdc qhov system tsa cov txheej txheem ntawm cov cai rau kev tiv thaiv kev nyab xeeb.
3) Ua kom tau qhov kev tshwm sim PID ntxiv Tom qab cov PV modules tau txuas nrog rau hauv cov txheej txheem, qhov tam sim no tsim los ntawm lub siab-voltage modules 'hlwb thiab hauv av yog qhov laj thawj tseem ceeb rau PID nyhuv (kom paub meej, thov teb rau "103 ”Nyob rau tom qab). Tom qab qhov voltage tau nce los ntawm 1000Vdc mus rau 1500Vdc, nws paub tseeb tias qhov hluav taws xob qhov sib txawv ntawm lub roj teeb nti thiab hauv av yuav nce, uas yuav ua rau kom muaj qhov cuam tshuam PID.
4) Ua kom cov txuam txuam poob Muaj qee qhov txuam txuam poob ntawm cov xov kab photovoltaic, uas feem ntau tshwm sim los ntawm cov laj thawj hauv qab no:
Lub zog ntawm lub zog ntawm cov photovoltaic sib txawv yuav muaj qhov sib txawv ntawm 0 ~ 3%.
Cov kab nrib pleev tawg tsim thaum lub sijhawm kev thauj mus los thiab teeb tsa yuav ua rau lub zog hluav taws xob tsis zoo
Tsis paub meej thiab tsis zoo ntawm kev tiv thaiv kab mob tom qab kev teeb tsa yuav ua rau lub zog hluav taws xob tsis zoo.
Hauv kev pom ntawm cov xwm txheej saum toj no, nce txhua txoj hlua los ntawm 22 Cheebtsam mus rau 32 Cheebtsam yuav pom tseeb nce cov txuam poob.
3. Kev soj ntsuam zoo sib xyaw Hauv kev txheeb xyuas saum toj no, ntau npaum li cas 1500Vdc tuaj yeem piv nrog 1000Vdc tuaj yeem txhim kho tus nqi ntawm cov nqi, thiab kev suav ntxiv yog xav tau.
Taw qhia: Piv nrog 1000Vdc photovoltaic system siv dav hauv photovoltaic fais fab nroj tsuag, kev tshawb fawb ntawm 1500Vdc daim ntawv thov hauv photovoltaic system coj los ntawm inverter manufacturers tau dhau los ua kev lag luam thev naus laus zis hotspot tsis ntev los no. Tom qab ntawd peb tuaj yeem yooj yim muaj cov lus nug ntawd.
Thib ob, cov khoom siv tseem ceeb ntawm cov tshuab photovoltaic ntawm 1500Vdc
1) Photovoltaic modules Tam sim no, FirstSolar, Artes, Trina, Yingli, thiab lwm lub tuam txhab tau tsim 1500Vdc photovoltaic modules, suav nrog cov pa hluav taws xob ua ke thiab ob npaug iav coj mus kuaj.
2) Inverter Thaum tam sim no, cov chaw tsim khoom lag luam tau tsim tawm 1500Vdc inverters nrog lub peev xwm ntawm 1MVA ~ 4MVA, uas tau thov siv hauv chaw nres tsheb fais fab. Qhov ntsuas hluav taws xob theem ntawm 1500Vdc tau them los ntawm cov qauv IEC ntsig txog.
3) Cov qauv rau cov thawv sib txuas thiab lwm cov khoom sib xyaw Ua ke Cov thawv sib xyaw thiab cov khoom siv tseem ceeb tau npaj lawm, thiab 1500Vdc tau nkag mus rau hauv lub thawv combiner daim ntawv pov thawj tus qauv ntawm CGC / GF037: 2014 "Cov Lus Qhia Tshwj Xeeb rau Cov Khoom Siv Photovoltaic Khoom Sib Txuas"; 1500Vdc tau raug qhia meej los ntawm feem ntau IEC cov qauv raws li koom nrog qeb ntawm cov hluav taws xob tsis tshua muaj kev taw qhia, xws li cov qauv hluav taws xob hauv Circuit Court IEC61439-1 thiab IEC60439-1, photovoltaic tshwj xeeb fuse IEC60269-6, thiab photovoltaic tshwj xeeb xob laim thaiv tiv thaiv cov khoom siv EN50539-11 / -12 Cov.
Txawm li cas los xij, txij li 1500Vdc photovoltaic system tseem nyob rau theem ua qauv qhia thiab kev ua lag luam xav tau tsawg, cov khoom siv saum toj no tseem tsis tau pib loj ntau lawm.
1500Vdc daim ntawv thov hauv lub tshuab photovoltaic
1. Macho Springs Hnub Ci Zog Chaw nres tsheb
Firstsolar tshaj tawm hauv lub Tsib Hlis 2014 tias thawj 1500Vdc lub chaw nres tsheb fais fab ua tiav hauv Deming, NewMexico tau muab tso rau hauv kev siv. Tag nrho cov peev txheej ntawm qhov chaw nres tsheb fais fab yog 52MW, 34 arrays siv 1000Vdc qauv, thiab cov ntaub ntawv seem uas siv 1500Vdc qauv.
SMA tshaj tawm thaum Lub Xya Hli 2014 tias nws lub zog 3.2MW photovoltaic fais fab nroj tsuag hauv Sandershauser Bergindustrialpark, lub chaw ua si muaj kev lag luam hauv Niestetal, Kassel, sab qaum teb Tebchaws Yelemees, tau muab tso rau hauv kev siv. Lub zog siv hluav taws xob siv 1500Vdc system.
2. Cov ntawv thov cov ntaub ntawv nyob hauv Suav teb
Hnub Ci Golmud Hnub Ci Qiheng Tshiab Zog Golmud 30MW Photovoltaic Project
Lub Ib Hlis 2016, thawj thawj hauv 1500Vdc photovoltaic zog tsim hluav taws xob qauv tsim qauv, Golmud Hnub Ci Qiheng Tshiab Lub Zog Golmud 30MW photovoltaic daim phiaj-txuas nrog lub zog hluav taws xob project, tau tsim kev txuas nrog rau daim phiaj rau lub zog tsim hluav taws xob, cim qhia tias qhov system 1500Vdc photovoltaic yeej tau nkag mus ua qauv qhia tam sim no.
Kev tsim kho ntawm 1500V ntsig txog cov khoom lag luam photovoltaic twb yog kev sib tw
Photovoltaic cov khoom siv thiab cov khoom siv hluav taws xob nyob hauv lub tshuab hluav taws xob hnub ci tam sim no tau tsim thiab tsim raws li DC voltage xav tau ntawm 1000V. Yuav kom ua tiav cov txiaj ntsig zoo ntawm cov tshuab photovoltaic, kev sib tawg yog qhov xav tau ceev yog thaum muaj kev txo qis ntawm photovoltaic kev pab them nqi rau nws lub zog tsim hluav taws xob cov nqi thiab cov peev txheej. Yog li, kev txhim kho ntawm 1500V ntsig txog cov khoom lag luam photovoltaic tau dhau los ua txoj kev hloov tshiab. 1500V cov khoom siv hluav taws xob ntau thiab cov khoom siv txhawb nqa hluav taws xob txhais tau tias qis dua tus nqi system thiab kev ua haujlwm siab zog. Qhia cov cuab yeej tshiab no thiab thev naus laus zis tuaj yeem ua rau photovoltaic kev lag luam maj maj kom tsis muaj kev vam khom rau kev pab nyiaj tau thiab ua tiav kev nkag mus "on-line" thaum ntxov. 1500V qhov yuav tsum tau ua rau lub hnub ci photovoltaic modules, hloov khoom siv, cab hluav taws xob, thawv thawv sib txuas, thiab kho kom zoo zog
Cov cuab yeej tseem ceeb ntawm cov khoom siv ntawm 1500V yog qhia saum toj no. Qhov yuav tsum ua ntawm 1500V rau txhua lub cuab yeej kuj hloov raws li:
1500V tivthaiv
• Qhov kev teeb tsa ntawm cov khoom hloov pauv, uas yuav tsum muaj qhov chaw siab dua ntawm cov khoom;
• Cov khoom siv hloov kev hloov pauv, ntau ntxiv cov khoom siv thiab kuaj ntsuas cov khoom siv rov qab;
• Cov kev ntsuas nce ntxiv rau kev tiv thaiv kev tiv thaiv, kev tiv thaiv hluav taws xob, tiv thaiv ntub, thiab cov mem tes;
• Kev tivthaiv tus nqi yog yooj yim tiaj tus thiab qhov ua tau zoo dua;
• Tam sim no muaj tus qauv IEC rau 1500Vdc cov khoom siv system. Xws li IEC 61215 / IEC 61730;
• 1500Vdc cov kaw lus tiv thaiv cov tshuab tsim hluav taws xob tau dhau cov ntawv pov thawj thiab PID qhov kev sim ua.
1500V DC kab
• Muaj qhov sib txawv ntawm rwb thaiv tsev, sheath thickness, ellipticity, tiv thaiv rwb thaiv tsev, kev txuas hluav taws xob, kev siv tshuaj tsuag ntsev, thiab kev ntsuam xyuas cov pa luam yeeb, thiab kuaj cov nplais hluav taws.
1500V lub thawv txuas
• Kev ntsuas qhov yuav tsum tau rau kev tshem tawm hluav taws xob thiab qhov nkag mus deb, lub zog hluav taws xob ntau thiab lub zog tiv taus hluav taws xob thiab rwb thaiv tsev tsis kam;
• Muaj qhov sib txawv ntawm cov hluav taws xob ntes, cov txuas hluav taws xob, cov xov hluav taws xob, cov hluav taws xob, cov khoom siv ntawm tus kheej, tiv thaiv diodes, thiab txuas txuas;
• Cov qauv rau cov thawv sib xyaw thiab cov khoom siv tseem ceeb muaj nyob hauv.
1500V inverter
• Cov neeg ntes hluav taws xob, cov hluav taws xob sib txuas, cov xov hluav taws xob, thiab cov khoom siv hluav taws xob hloov yog qhov sib txawv;
• Kev rwb thaiv tsev, kev tshem tawm hluav taws xob, thiab tawg tawm los ntawm qhov hluav taws xob nce;
• 1500V hluav taws xob qib tau them los ntawm cov qauv IEC ntsig txog.
Qhov system 1500V
Hauv kev tsim qauv ntawm 1500V cov kab ke, cov khoom sib txuas ntawm txhua txoj hlua ntawm 1000V system siv los ua 18-22, thiab tam sim no lub 1500V system yuav zoo heev nce tus naj npawb ntawm cov khoom hauv series rau 32-34, ua ntau cov hlua tsawg dua thiab dhau los ua kev muaj tiag.
Kev tsim hluav taws xob tam sim no photovoltaic tsim hluav taws xob, DC-sab voltage 450-1000V, AC-sab voltage 270-360V; 1500V system, tus naj npawb ntawm ib txoj hlua sib txuas tau nce li 50%, DC-sab voltage 900-1500V, AC-sab 400-1000V, tsis tsuas yog DC sab kab kev poob qis Cov kab poob ntawm AC sab tau nqis nqis. Yuav tsum muaj 1500V rau cov khoom sib txuas, kev hloov pauv, txuas hluav taws xob, lub thawv sib txuas, thiab kho kom zoo zog
Hais txog cov inverters, 1MW centralized inverters tau siv yav dhau los, thiab tam sim no lawv tuaj yeem nthuav dav rau 2.5MW inverters tom qab siv 1500V system; thiab cov kab hluav taws xob ntawm AC ib sab yog nce ntxiv. Cov hloov hluav taws xob ntawm tib lub zog thiab AC sab Lub qhov tso zis tawm tam sim no pab txo tus nqi ntawm qhov inverter.
Los ntawm kev suav zoo, tom qab kev txhim kho kev txhim kho ntawm 1500V qhov system, tag nrho cov nqi hluav taws xob tag nrho tuaj yeem txo los ntawm kwv yees li 2 xees, thiab lub zog ntawm qhov system tuaj yeem txhim kho li 2%. Yog li daim ntawv thov ntawm 1500V kev ua haujlwm tau txais txiaj ntsig zoo kom txo tau tus nqi system.
Los ntawm kev siv 1500V system, tus naj npawb ntawm cov khoom hauv cov khoom nce, cov xov tooj sib txuas tsawg dua, cov xov tooj ntawm cov hluav taws xob tsawg dua, thiab cov xov tooj ntawm cov sib xyaw thiab cov ntsuas hluav taws xob tsawg dua. Qhov voltage nce ntxiv, qhov poob yog txo, thiab qhov ua tau zoo yog txhim kho. Txo qis dua kev teeb tsa thiab kev saib xyuas lub zog tseem ua rau txo nqi kev teeb tsa thiab txij nkawm. Qhov no tuaj yeem txo tus nqi hluav taws xob LCOE tus nqi.
Qhov loj sib! 1500V photovoltaic system ceev cov kev tawm tsam ntawm parity era
Xyoo 2019, nrog rau kev hloov pauv ntawm cov cai tswjfwm photovoltaic, kev lag luam tau twv kom txo tus nqi hluav taws xob, thiab nws yog qhov kev zam uas tsis xav txav mus rau kev nkag mus rau is taws nem pheej yig. Yog li no, thev naus laus zis thev naus laus zis yog qhov kev daws teeb meem, txo tus nqi hluav taws xob thiab txo kev sib tos ntawm kev pab nyiaj tau dhau los ua cov kev taw qhia tshiab rau kev noj qab haus huv ntawm kev lag luam photovoltaic. Nyob rau tib lub sijhawm, Tuam Tshoj, raws li lub ntiaj teb ua tus tsim cov khoom lag luam ntawm photovoltaic, tau pab ntau lub teb chaws kom ua tiav parity hauv Is Taws Nem, tab sis nws tseem qee qhov kev ncua deb ntawm parity hauv Is Taws Nem rau ntau yam.
Qhov laj thawj tseem ceeb vim li cas cov lag luam luam tawm txawv teb chaws tuaj yeem ua tiav qhov sib luag yog tias ntxiv rau Tuam Tshoj cov txiaj ntsig zoo ntawm kev nqis peev, thaj av, kev nkag mus, teeb pom kev zoo, nqi hluav taws xob, thiab lwm yam, qhov tseem ceeb tshaj thiab kawm paub taw tes yog tias lawv kuj yog Suav ntau siab heev. Piv txwv, photovoltaic qhov system nrog hluav taws xob ntawm 1500V. Tam sim no, 1500V voltage-qib cov khoom lag luam tau dhau los ua kev daws teeb meem rau kev lag luam tawm txawv teb lag luam photovoltaic. Yog li, domestic photovoltaics tseem yuav tsum tsom mus rau cov txheej txheem kev tsim kho tshiab, ua kom nrawm rau daim ntawv thov ntawm 1500V thiab lwm yam thev naus laus zis, paub txog tus nqi txo, ua haujlwm tau zoo, thiab txhim kho kom zoo ntawm cov chaw nres tsheb fais fab, thiab kev nkag siab txog kev lag luam photovoltaic txav mus rau lub sijhawm parity.
Yoj 1500V tau tshoob lub ntiaj teb
Raws li daim ntawv qhia txog IHS, thawj zaug xav tau siv 1500V txheej txheem hnub rov qab rau xyoo 2012. Los ntawm 2014, FirstSolar nqis peev rau thawj 1500V photovoltaic fais fab nroj tsuag. Raws li kev xam ntawm FirstSolar: 1500V photovoltaic zog chaw nres tsheb txo tus naj npawb ntawm cov kab hluav taws xob sib luag los ntawm kev nce tus naj npawb ntawm cov koob yees duab series photovoltaic; txo tus naj npawb ntawm cov thawv hlaws thiab cov cable; nyob rau tib lub sijhawm, thaum qhov voltage nce, qhov poob hluav taws xob raug txo qis ntxiv, thiab lub zog ua haujlwm ntawm qhov system tau zoo tuaj.
Nyob rau xyoo 2015, Tuam Tshoj tus tsim inverter cov tuam txhab Sunshine Power tau ua tus thawj coj hauv kev txhawb nqa cov kev daws teeb meem raws li 1500V inverter tsim hauv kev lag luam, tab sis vim tias lwm qhov kev txhawb nqa tsis tau tsim txoj kev lag luam tiav nyob hauv Suav teb, thiab cov tuam txhab kev nqis peev tau txwv txog qhov no, Tsis yog muab qhov muaj feem thib rau kev nthuav tawm txawv teb chaws tom qab kev nthuav dav hauv tsev loj, nws ua ntej "kov yeej" lub ntiaj teb thiab tom qab ntawd rov qab mus rau Suav lag luam.
Los ntawm qhov kev pom ntawm lub lag luam thoob ntiaj teb, qhov system 1500V tau dhau los ua qhov tsim nyog rau cov haujlwm loj photovoltaic los txo cov nqi thiab nce kev ua haujlwm. Hauv cov tebchaws uas muaj hluav taws xob tsawg xws li Is Nrias teb thiab Latin America, chaw tsim hluav taws xob av loj loj yuav luag txhua qhov yuav luag txhua 1500V kev twv twv yuav khoom; cov teb chaws nrog tsim hluav taws xob kev lag luam hauv Tebchaws Europe thiab Tebchaws Asmeskas tau hloov DC voltage los ntawm 1000V photovoltaic tshuab mus rau 1500V; cov kev lag luam tawm tshiab xws li Nyab Laj thiab Middle East tau ncaj qha mus rau 1500V lub tshuab. Nws yog tsim nyog sau cia tias 1500-volt GW-qib photovoltaic qhov project tau siv thoob ntiaj teb thiab tau rov ua cov ntaub ntawv thoob ntiaj teb nrog ultra-low on-grid tus nqi hluav taws xob.
Hauv Tebchaws Asmeskas, qhov muaj peev xwm ntawm cov khoom siv 1500Vdc hauv 2016 tau lees txog 30.5%. Hauv 2017, nws tau muaj ob npaug rau 64.4%. Nws cia siab tias tus lej no yuav nce mus txog 84.20% xyoo 2019. Raws li cov tuam txhab EPC hauv zos: "Txhua lub chaw tsim hluav taws xob 7GW av hluav taws xob txhua xyoo siv 1500V. Piv txwv li, thawj qhov loj-loj hauv av photovoltaic fais fab chaw nres tsheb hauv Wyoming, uas nyuam qhuav tau txuas rau kab sib chaws, siv lub hnub ci zog hluav taws xob 1500V centralized inverter daws.
Raws li kev kwv yees, piv nrog 1000V system, tus nqi txo thiab kev nce nqi ntawm 1500V feem ntau yog xav hauv:
1) Tus naj npawb ntawm cov khoom sib txuas hauv koob tau nce los ntawm 24 blocks / txoj hlua txuas rau 34 block / hlua, txo cov xov tooj ntawm cov hlua. Qhov tseeb, kev noj haus ntawm photovoltaic cables tau nqis qis dua 48%, thiab tus nqi ntawm cov khoom siv xws li lub thawv sib txuas kuj tau txo txog li 1/3, thiab tus nqi tau raug txo los ntawm txog 0.05 yuan / Wp;
2) Qhov nce ntawm cov xov tooj hauv cov txheej txheem ua rau txo tus nqi system ntawm kev txhawb nqa, pawg rau pob zeb, kev tsim kho, thiab kev teeb tsa los ntawm kwv yees li 0.05 yuan / Wp;
3) AC daim phiaj-txuas hluav taws xob ntawm 1500V system tau nce los ntawm 540V mus rau 800V, cov kab sib txuas-daim phiaj txuas nrog tau raug txo qis, thiab AC thiab DC sab system poob tuaj yeem txo los ntawm 1 ~ 2%.
4) Raws li cov ntaub ntawv ua tiav ntawm kev ua lag luam txawv teb chaws, qhov muaj peev xwm zoo ntawm ib qho-ib qho me me tuaj yeem tsim kom yog 6.25MW hauv 1500V tshuab, thiab txawm tias mus txog 12.5MW hauv qee thaj chaw. Los ntawm nce lub peev xwm ntawm ib qho sub-array, tus nqi ntawm AC khoom siv xws li hloov pauv tuaj yeem raug txo kom tsawg.
Yog li ntawd, piv nrog cov tsoos 1000V system, 1500V system tuaj yeem txo tus nqi kom qis ntawm 0.05 ~ 0.1 yuan / Wp, thiab cov hluav taws xob tiag tiag tuaj yeem nce ntxiv ntawm 1 ~ 2%.
Multiplying los ntawm "tej zaum" 1500Vdc system kev ua lag luam
Piv nrog rau kev ua lag luam thoob ntiaj teb, nyob rau xyoo pib ntawm Suav kev lag luam photovoltaic, vim yog lub kaw lus tsis txaus ntawm kev lag luam thev naus laus zis, qhov system 1500V pib lig thiab nws txoj kev loj hlob qeeb. Tsuas yog ob peb lub tuam txhab ua lag luam xws li Sunshine Power tau ua tiav R & D thiab ntawv pov thawj. Tab sis nrog qhov nce ntawm 1500V lub zog ntawm lub ntiaj teb hauv ntiaj teb, kev lag luam hauv tsev tau txais txiaj ntsig nws, thiab tau ua tiav cov txiaj ntsig zoo hauv kev tsim kho thiab kev tsim kho tshiab ntawm 1500V tshuab thiab cov ntawv thov:
- Nyob rau Lub Xya Hli 2015, thawj 1500V centralized inverter tsim thiab tsim los ntawm Sunshine Power hauv Suav teb ua tiav cov phiaj xwm kev sib txuas ntsuas thiab qhib qhov pib ua ntej rau 1500V thev naus laus zis hauv kev lag luam hauv tsev.
- Lub Ib Hlis 2016, thawj thawj domestic 1500V photovoltaic zog tsim hluav taws xob qauv tsim muaj peev xwm txuas nrog rau kab sib chaws rau lub zog tsim hluav taws xob.
- Lub Rau Hli 2016, hauv thawj qhov haujlwm hauv tebchaws Datong thawj coj, 1500V centralized inverters tau thov hauv cov pob khoom.
- Thaum Lub Yim Hli 2016, Sunshine Power tau ua tus thawj coj los tsim lub ntiaj teb thawj zaug 1500V txoj hlua inverter, ntxiv kev txhim kho thoob ntiaj teb kev sib tw ntawm cov khoom siv hauv tsev photovoltaic inverters.
Nyob rau hauv tib lub xyoo, Tuam Tshoj thawj 1500V photovoltaic qhov system benchmarking tau tsim los txuas rau daim phiaj rau kev tsim hluav taws xob hauv Golmud, Qinghai, khij tias qhov kev tsim ntawm 1500Vdc photovoltaic system tau pib nkag mus rau thaj teb ntawm kev siv tswv yim. Tag nrho cov peev txheej nruab ntawm cov chaw nres tsheb fais fab yog 30MW. Hnub ci fais fab muab cov kev daws teeb meem tiav rau qhov haujlwm no, txo kev nqis peev cable them 20%, tus nqi ntawm 0.1 yuan / Wp, thiab txo qis ntau AC thiab DC sab kab poob thiab cov hluav taws xob qis hluav taws xob sab winding poob.
1500V tau dhau los ua lub ntsiab lag luam thoob ntiaj teb
Lub 1500V system, uas muaj ob qho kev txo nqi thiab ua haujlwm, tau maj mam dhau los ua thawj qhov kev xaiv rau cov chaw nres tsheb loj hauv av. Hais txog kev txhim kho yav tom ntej ntawm 1500V systems, IHS kwv yees tias kev sib koom ntawm 1500V inverters yuav nce ntxiv mus rau 74% hauv 2019 thiab yuav nce mus txog 84% nyob rau xyoo 2020, dhau los ua lub hauv paus kev lag luam.
Los ntawm qhov kev pom ntawm 1500V ntsia lub peev xwm, nws tsuas yog 2GW hauv 2016 thiab dhau 30GW hauv 2018. Nws tau ua tiav qhov kev loj hlob ntawm ntau dua 14 zaug hauv ob xyoos xwb, thiab nws cia siab tias yuav ua kom muaj kev ceev nrawm ntawm txoj kev loj hlob. Nws xav tias yuav tsum nce zuj zus nyob rau xyoo 2019 thiab 2020 yog qhov nyiaj yuav tshaj 100GW. Rau cov lag luam Suav, Sunshine fais fab tau teeb tsa ntau dua 5GW ntawm 1500V inverters thoob ntiaj teb thiab muaj kev npaj tsim ntau tshaj 1500V koob kab thiab cov nruab nrab nruab nrab inverters hauv 2019 kom tau raws li cov kev lag luam uas tau nrawm nrawm tsim kev thov.
Ua kom nce DC voltage rau 1500V yog qhov kev hloov tseem ceeb hauv kev txo tus nqi thiab nce kev ua haujlwm, thiab tam sim no tau dhau los ua cov kev daws teeb meem rau kev txhim kho photovoltaic thoob ntiaj teb. Nrog lub caij nyoog ntawm kev cog lus txo qis thiab kev ncaj ncees nyob hauv Suav teb, 1500V txheej txheem kuj tseem yuav siv ntau dua thiab dav dua hauv Suav teb, ua kom nrawm mus txog Tuam Tshoj cov kev qhia tshwj xeeb.
Kev lag luam txheeb xyuas ntawm 1500V photovoltaic system
Txij xyoo 2018, tsis hais nyob rau txawv teb chaws lossis hauv tsev, daim ntawv thov ntawm qhov seem ntawm 1500V tau txais loj dua thiab ntau dua. Raws li IHS cov txheeb cais, cov ntawv thov ntim ntawm 1500V rau cov chaw nres tsheb fais fab loj hauv txawv teb chaws tau tshaj 50% hauv 2018; raws li kev txheeb cais ua ntej, ntawm cov pawg thib peb ntawm cov neeg sib tw hauv ntej hauv xyoo 2018, qhov kev faib ua feem ntawm 1500V kev thov yog nruab nrab ntawm 15% thiab 20%.
Qhov system 1500V puas tuaj yeem txo tus nqi hluav taws xob rau qhov project? Daim ntawv no ua qhov kev sib piv ntawm qhov kev lag luam ntawm ob qhov theem voltage los ntawm kev suav theoretical thiab cov ntaub ntawv tiag.
I. Kev tsim qauv txheej txheem
Txhawm rau tshuaj xyuas tus nqi theem ntawm 1500Vdc daim ntawv thov hauv cov txheej txheem photovoltaic, cov qauv tsim qauv siv los piv rau cov phiaj xwm qhov nqi nrog qhov ib txwm 1000V system tus nqi.
1. kev xam ua ntej
1) Qhov chaw nres tsheb fais fab hauv av, tiaj tiaj tiaj, ntsia lub peev xwm tsis txwv los ntawm thaj av;
2) Cov ntsuas kub thiab tsis tshua muaj qhov kub ntawm cov phiaj xwm yuav tsum raug txiav txim siab raws li 40 ℃ thiab -20 ℃.
3) Cov tsis tseem ceeb ntawm cov khoom siv tau xaiv thiab cov ntsuas kev hloov pauv tau qhia hauv qab rooj hauv qab no.
2. Kev tsim qauv phiaj xwm
1) 1000V series qauv tsim
22 310W ob npaug ntawm ob tog sib txuas photovoltaic modules tsim ib ceg 6.82kW, 2 ceg tsim tsim cov xwm fab xwm yeem, 240 ceg tag nrho 120 square arrays, thiab nkag rau 20 75kW inverters (1.09 npaug dhau-faib ntawm DC sab, nce ntawm sab nraud) 15%, nws yog 1.25 npaug dhau los muab-ua rau tsim) los ua 1.6368MW zog tsim hluav taws xob.
Qhov kev tivthaiv tau nruab nrog kab rov tav raws li 4 * 11, thiab lub hauv ntej thiab nram qab ob lub ncej ruaj ruaj.
2) 1500V series qauv tsim
34 310W muab ob tog sib txuas ntawm photovoltaic modules tsim 10.54kW ceg, 2 ceg tsim lub xwm fab xwm meem, 324 ceg muaj tag nrho 162 square arrays, thiab 18 175kW inverters raug ntsia (1.08 npaug dhau-faib ntawm DC sab, nce ntawm rov qab Xav Txog 15%, nws yog 1.25 npaug dhau los muab-tsim rau) los tsim 3.415MW zog tsim hluav taws xob.
Cov khoom sib txuas tau nruab nrog kab rov tav raws li 4 * 17, thiab sab pem hauv ntej thiab nram qab ob chav ncej tseev tsim nkhaus.
Thib ob, qhov cuam tshuam ntawm 1500V ntawm kev pib peev
Raws li cov qauv tsim qauv saum toj no, qhov kev sib piv ntawm qhov ntau thiab tsawg ntawm engineering qhov ntau thiab cov nqi ntawm 1500V system thiab tsoos 1000V system yog raws li hauv qab no.
Rooj 3: Kev cog lus nyob ntawm 1000V qhov system
Rooj 4: Kev cog lus nyob ntawm 1500V qhov system
Los ntawm kev tshawb xyuas qhov sib piv, pom tau tias piv nrog cov tsoos 1000V system, 1500V system txuag txog 0.1 yuan / W ntawm tus nqi system.
Thib peb, qhov cuam tshuam ntawm 1500V ntawm kev ua hluav taws xob
Muab xam lav:
Siv cov khoom sib txuas, yuav tsis muaj qhov sib txawv hauv lub zog hluav taws xob vim qhov sib txawv hauv cov khoom siv; Piv txwv tias muaj tiaj tiaj tiaj, yuav tsis muaj duab ntxoov ntxoo vim muaj kev hloov puag ncig;
Qhov sib txawv ntawm lub zog hluav taws xob feem ntau yog ua raws li ob yam: tsis sib haum ntawm cov sib txuas thiab cov hlua, DC kab poob, thiab AC kab poob.
1. mismatch ploj ntawm cov khoom sib txuas thiab cov hlua
Tus naj npawb ntawm cov khoom sib txuas ntawm ib ceg nkaus xwb tau nce los ntawm 22 txog 34. Vim lub zog sib txawv ntawm ± 3W ntawm cov khoom sib txawv, qhov poob hwj chim ntawm 1500V system Cheebtsam yuav nce ntxiv, tab sis nws tsis tuaj yeem suav tau rau ntawm qhov ntau.
Tus naj npawb ntawm cov kev nkag mus ntawm ib tus inverter tau nce ntawm 12 txog 18, tab sis tus naj npawb ntawm MPPT taug qab cov kab ntawm lub inverter tau nce ntawm 6 txog 9 kom paub tseeb tias 2 ceg sib raug rau 1 MPPT. MPPT poob tsis nce.
2. DC thiab AC kab poob
Muab xam cov mis ntawm cov poob kab
Q poob = I2R = (P / U) 2R = ρ (P / U) 2 (L / S)
1) Kev suav ntawm DC kab poob
Cov lus: DC kab poob feem ntawm ib ceg
Los ntawm cov kev suav hais txog saum toj saud, nws pom tias DC kab poob ntawm 1500V qhov system yog 0.765 npaug ntawm qhov 1000V system, uas yog sib npaug los txo DC kab poob los ntawm 23.5%.
2) Kev suav ntawm AC kab poob
Cov lus: AC kab poob piv ntawm ib inverter
Raws li cov laij lej saum toj no suav, nws pom tias DC kab poob ntawm 1500V system yog 0.263 npaug ntawm qhov 1000V system, uas sib npaug rau txo AC kab poob los ntawm 73.7%.
3) Cov ntaub ntawv cov ntaub ntawv tseem ceeb
Vim tias qhov kev tsis sib xws ntawm cov khoom siv tsis tuaj yeem suav ntau, thiab qhov chaw ib puag ncig muaj lub luag haujlwm ntau, rooj plaub tiag yuav raug siv los piav ntxiv.
Kab lus no siv lub zog tsim hluav taws xob cov ntaub ntawv ntawm qhov thib peb pob ntawm ib txoj haujlwm tom ntej. Lub sijhawm khaws ntaub ntawv yog lub Tsib Hlis txog Lub Rau Hli 2019, tag nrho 2 lub hlis ntawm cov ntaub ntawv.
Cov lus: Sib piv cov kev ua kom muaj zog ntawm lub xyoo 1000V thiab 1500V
Los ntawm cov lus saum toj no, tuaj yeem pom tias ntawm tib lub phiaj xwm thaj chaw, siv cov khoom sib txuas, cov inverter cov khoom lag luam, thiab tib hom kev teeb tsa cov cim, thaum lub Tsib Hlis txog Lub Rau Hli 2019, lub sijhawm siv hluav taws xob ntawm 1500V system yog 1.55% siab tshaj 1000V system.
Nws tuaj yeem pom tau hais tias txawm hais tias qhov nce ntawm cov xov tooj ntawm ib txoj hlua txuas ntxiv yuav ua rau muaj qhov tsis sib haum ntawm cov khoom sib txuas vim nws tuaj yeem txo DC kab poob li ntawm 23.5% thiab AC kab poob los ntawm kwv yees li 73.7%, 1500V system tuaj yeem nce qhov lub zog tsim hluav taws xob ntawm qhov project.
Plaub, kev soj ntsuam nruj
Los ntawm kev txheeb xyuas saum toj no, peb tuaj yeem pom qhov sib piv nrog cov tsoos 1000V system, qhov system 1500V,
1) Tuaj yeem txuag tau li 0.1 yuan / W system nqi;
2) Txawm hais tias qhov nce ntawm cov xov tooj ntawm ib txoj hlua ib leeg yuav ua rau kom tsis sib haum ntawm cov khoom sib txuas, tab sis vim tias nws tuaj yeem txo DC kab poob li ntawm 23.5% thiab AC kab poob los ntawm kwv yees li 73.7%, 1500V system yuav nce lub zog tsim hluav taws xob ntawm qhov project.
Yog li ntawv, 1500Vdc daim ntawv thov hauv photovoltaic system cov nqi hluav taws xob tuaj yeem txo kom tsawg.
Raws li Dong Xiaoqing, tus thawj tswj hwm ntawm Hebei Energy Engineering lub koom haum, ntau dua 50% ntawm hauv av photovoltaic qhov project tsim cov phiaj xwm tiav los ntawm lub koom haum xaiv 1500V; nws cia siab tias lub teb chaws 1500V sib koom ntawm cov chaw tsim hluav taws xob hauv av hauv 2019 yuav ncav cuag li 35%; nws yuav tau nce ntxiv hauv 2020.
IHS Markit, uas yog tus paub zoo thoob ntiaj teb, lub koom haum pab tswv yim, muab kev twv pom zoo dua. Hauv lawv daim 1500V thoob ntiaj teb photovoltaic kev lag luam tshuaj ntsuam xyuas, lawv taw qhia tias lub ntiaj teb 1500V photovoltaic zog cog nplai yuav ntau dua 100GW hauv ob xyoos tom ntej.
Daim duab: Kev twv ua ntej ntawm qhov sib npaug ntawm 1500V hauv ntiaj teb cov chaw hluav taws xob hauv ntiaj teb
Tsis muaj ib qho tsis txaus ntseeg, raws li lub ntiaj teb photovoltaic kev lag luam tus txheej txheem de-subsidization tus txheej txheem nrawm dua, thiab qhov kawg ntawm kev nrhiav nqi hluav taws xob, 1500V, raws li kev daws teeb meem uas tuaj yeem txo nqi hluav taws xob, yuav siv ntau dua.
