Nyob rau hauv lub photovoltaic fais fab chaw nres tsheb system, lub Cheebtsam thiab lub photovoltaic inverter yog ob qho tseem ceeb Cheebtsam ntawm tag nrho cov system. Tus nqi ntawm lub inverter yog ntau dua li ntawm ib feem. Ntau tus neeg siv muaj lub tswv yim no, tso siab rau qhov siab tshaj plaws cov tswv yim ntawm photovoltaic inverter. lub zog, thiab nce kev nkag mus ntawm cov khoom siv los txhim kho lub zog tag nrho ntawm qhov chaw nres tsheb fais fab. Tab sis tsuas yog qhov kev tshawb fawb piv tau tuaj yeem nqa qhov kev ua haujlwm siab tshaj plaws rau lub chaw nres tsheb fais fab. Qhov tseeb, qhov sib piv ntawm photovoltaic modules thiab inverters yuav tsum tau ua tib zoo xav txog ntau yam, xws li teeb pom kev zoo, qhov chaw teeb tsa, cov khoom siv, thiab cov khoom siv inverter.
【Light altitude factor】
Lub irradiance sib txawv heev nyob rau hauv ntau cheeb tsam, thiab ntau dua lub hnub ci lub kaum sab xis, lub hnub ci hluav taws xob muaj zog dua. Qhov thib ob, qhov siab dua qhov siab, lub hnub ci hluav taws xob muaj zog dua. Piv txwv li, nyob rau hauv Qinghai-Tibet Plateau, lub hnub ci hluav taws xob yog qhov muaj zog tshaj plaws, tab sis qhov phem tshaj qhov kub dissipation ntawm photovoltaic inverter yog, lub inverter yuav tsum derated, yog li qhov kev faib ua feem ntawm photovoltaic modules yog me me.
【Installation site yam】
1. DC sab system efficiency
Lub chaw nres tsheb fais fab tau txais kev sib txawv ntawm kev teeb tsa, thiab DC sab poob yog qhov sib txawv heev. Nyob rau hauv lub chaw nres tsheb photovoltaic faib, cov khoom txuas nrog lub inverter hauv DC. Yog hais tias lub photovoltaic inverter yog ntsia nyob ze, DC cable yog luv heev, thiab cov efficiency ntawm DC sab system tuaj yeem ncav cuag 98 feem pua. Nyob rau hauv lub hauv paus chaw nres tsheb fais fab hauv av, vim ntev DC cables, lub zog ntawm lub hnub ci hluav taws xob mus rau photovoltaic modules yuav tsum dhau los ntawm DC cables, cov thawv sib txuas, DC faib khoom thiab lwm yam khoom siv. Qhov ua tau zoo ntawm DC sab system feem ntau yog li 90 feem pua.
2. Daim phiaj hluav taws xob hloov pauv
Qhov ntsuas tso zis siab tshaj plaws ntawm lub inverter tsis zoo li qub. Thaum daim phiaj hluav taws xob poob qis, lub inverter tsis tuaj yeem ncav cuag lub zog ntsuas. Piv txwv li, 33Kw inverter, qhov siab tshaj plaws tso zis tam sim no yog 48A, lub zog ntsuas yog 33kW, cov zis hluav taws xob ntsuas yog 400V, 48A * 400V * 1.732=33.kW, yog tias daim phiaj hluav taws xob poob rau 360V, inverter tso zis hwj chim yog 48A * 360V * 1.732=30.kW.
3. Inverter txias tej yam kev mob
Muaj qhov yuav tsum tau ua rau qhov chaw teeb tsa ntawm photovoltaic inverter. Feem ntau, nws yuav tsum tau xaiv nyob rau hauv ib qho chaw uas muaj cua zoo thiab ncaj qha tshav ntuj. Yog hais tias cov kev teeb tsa saum toj no tsis tuaj yeem ua tau raws li, kev txiav txim siab yuav tsum tau txiav txim siab, thiab cov khoom siv tsawg dua yuav tsum tau sib phim.
【Cov ntsiab lus nws tus kheej】
Tus tsim lub neej ntawm photovoltaic modules yog 25 mus rau 30 xyoo, thiab feem ntau module factories yuav tawm ib tug zoo siab ntev ntawm 0-5 feem pua ntawm cov tsim tsim, kom cov modules tseem muaj peev xwm ncav cuag 80 feem pua ua hauj lwm efficiency tom qab 25 xyoo ntawm kev siv. Qhov thib ob, lub zog kub ntawm lub module yog hais txog -0.41 feem pua / degree, uas yog, thaum qhov kub ntawm lub photovoltaic module poob, lub zog ntawm lub module yuav nce.
[Photovoltaic inverter tus kheej yam tseem ceeb]
1. Inverter ua hauj lwm efficiency thiab lifespan
Kev ua haujlwm ntawm lub inverter tsis ruaj khov, ntawm 40 feem pua rau 60 feem pua lub zog, qhov ua tau zoo tshaj plaws, thiab qis dua 40 feem pua lossis ntau dua 60 feem pua, qhov ua tau zoo yuav txo qis. Lub neej ntawm lub inverter muaj ntau yam ua rau kev khiav hauj lwm kub. Qhov kub ntawm lub inverter yog qhov siab tshaj plaws thaum lub sij hawm lub sij hawm ntev ua haujlwm siab. Raws li qhov kev sim, lub neej ntawm lub inverter thaum nws ua haujlwm ntawm 80-100 feem pua lub zog rau lub sijhawm ntev ntev dua li ntawm 40-60 feem pua ntawm lub zog. kwv yees li 20 feem pua qis dua.
2. Qhov zoo tshaj plaws ua haujlwm voltage ntau ntawm lub inverter
Thaum lub zog ua haujlwm nyob ib puag ncig ntawm qhov ntsuas ua haujlwm ntawm lub inverter, qhov ua tau zoo yog qhov siab tshaj plaws, ib theem 220V inverter, lub inverter input ntsuas voltage yog 360V, thiab peb-theem 380V inverter, lub inverter input ntsuas voltage yog 650V. .
3. Lub zog tso zis thiab lub peev xwm dhau ntawm lub inverter
Lub zog tso zis ntawm photovoltaic inverters ntawm ntau hom ntawm tib lub zog ntu kuj txawv. Cov inverters uas tsim los ntawm qee lub tuam txhab tsis muaj peev xwm dhau. Yog li ntawd, qhov piv ntawm photovoltaic inverters thiab cov khoom siv tsis yog qhov kev txiav txim siab, txwv tsis pub lawv yuav raug kev txom nyem los ntawm qhov tsis pom kev, ntau yam yuav tsum tau txiav txim siab zoo thaum txhim kho photovoltaic fais fab nroj tsuag.