Txij li thaum lub advent ntawm photovoltaic fais fab tuag systems, hluav taws kub xwm txheej tshwm sim los ntawm photovoltaic fais fab chaw nres tsheb tau tshwm sim los ntawm lub sij hawm mus rau lub sij hawm nyob rau hauv lub ntiaj teb no. Tawm tsam keeb kwm yav dhau los no, photovoltaic module-theem kaw nrawm tau nkag siab thiab muaj nuj nqis los ntawm ntau thiab ntau tus neeg ...
Solar Rapid Shutdown ntawm photovoltaic systems, raws li lub npe qhia, yog kom ceev ceev kev sib txuas ntawm txhua photovoltaic module. Lub tswv yim no tau hais los ntawm National Electrical Code (NEC) ntawm Tebchaws Meskas. Thaum ntxov li xyoo 2014, NEC2014 690.12 "Module-theem Self-Shutdown Solution" tus qauv raug tso tawm, uas ua rau cov kev xav tau rau kev kaw sai ntawm cov tshuab photovoltaic.
Nyob rau hauv 2017 version ntawm NEC690.12, nruj yuav tsum tau ua rau no ceev ceev kaw - nrog ib tug deb ntawm 305 hli mus rau lub photovoltaic matrix raws li ciam teb, nyob rau hauv 30S tom qab lub ceev shutdown ntaus ntawv yog qhib, lub voltage sab nraum lub ciam teb ntau yam yog txo kom qis dua 30V, thiab qhov voltage yog txo nyob rau hauv tus ciam teb 8, thiab qhov voltage yog txo nyob rau hauv tus ciam teb 8. "module-qib kaw". Hauv qhov tseeb 2020 version ntawm tus qauv, lo lus "kev kaw nrawm" tau hloov kho thiab nthuav dav ntxiv, thiab "PV kev tswj hwm kev phom sij" tau thov. Tus qauv tshiab xav kom PV system muaj "PV kev tswj hwm kev nyab xeeb" kom ua rau PV system tswj tau lub xeev hauv cov xwm txheej tseem ceeb. Hauv lwm lo lus, "PV kev tswj hwm kev phom sij" tuaj yeem siv los ua kom tiav cov khoom siv - qib kaw, thiab hauv 30 vib nas this tom qab pib kaw sai, qhov hluav taws xob nyob hauv thaj tsam thaj tsam raug txo kom qis dua 80V.
Lub hauv paus ntsiab lus ntawm Photovoltaic Module-Qib nrawm kaw
Ua hauj lwm hom ntawm photovoltaic module- theem ceev ceev
Lub hauv paus ntsiab lus ntawm kev kaw nrawm ntawm qib photovoltaic module feem ntau suav nrog ob yam: txoj hauv kev kaw thiab kaw txoj cai.
Muaj ob txoj hauv kev tseem ceeb kom ceev ceev cov qib photovoltaic module: kev kaw hluav taws xob thiab hluav taws xob kaw.
1. Mechanical shutdown: Mechanical shutdown yog disconnect lub photovoltaic module ntawm Circuit Court los ntawm ib tug neeg kho tshuab ntaus ntawv kom tsis txhob tso zis hwj chim ntawm lub hnub ci vaj huam sib luag. Cov txheej txheem kev kaw tshuab feem ntau muaj xws li cov keyboards, riam hloov thiab Circuit Court breakers. Qhov zoo ntawm kev siv tshuab kaw yog cov qauv yooj yim thiab kev ntseeg siab, tab sis kev ua haujlwm qeeb thiab yuav tsum tau muaj kev cuam tshuam los ntawm phau ntawv.
2. Kev kaw hluav taws xob: Kev kaw hluav taws xob yog txhawm rau txuas lub photovoltaic module los ntawm Circuit Court los ntawm cov khoom siv hluav taws xob kom tsis txhob tso zis hluav taws xob ntawm lub hnub ci vaj huam sib luag. Kev kaw hluav taws xob feem ntau muaj xws li relays, thyristors thiab fais fab transistors. Qhov zoo ntawm kev kaw hluav taws xob yog kev ua haujlwm ceev ceev thiab kev ua haujlwm siab, tab sis yuav tsum muaj cov khoom siv hluav taws xob sab nraud thiab kev tswj xyuas hluav taws xob.Kev kaw haujlwmLub hauv paus ntsiab lus ntawm kev kaw nrawm ntawm qib photovoltaic module feem ntau suav nrog ob txoj hauv kev: kev kaw hluav taws xob thiab tam sim no kaw.
1. Kev kaw hluav taws xob: Kev kaw hluav taws xob yog kom txiav tawm lub photovoltaic module los ntawm Circuit Court los ntawm kev ntsuas qhov tso zis voltage ntawm photovoltaic module. Thaum qhov hluav taws xob ntau tshaj qhov teeb tsa tus nqi, photovoltaic module tau txiav tawm ntawm lub voj voog. Txoj kev no tuaj yeem tiv thaiv kev puas tsuaj rau photovoltaic modules vim qhov hluav taws xob ntau dhau. Tus yuam sij rau kev kaw hluav taws xob yog los saib xyuas qhov voltage thiab sib piv nrog cov nqi teev. Thaum qhov hluav taws xob ntau tshaj li qhov teeb tsa, nws raug kaw los ntawm hluav taws xob lossis cov cuab yeej siv tshuab.
2. Kev kaw tam sim no: Kev kaw tam sim no yog ntsuas cov zis tam sim no ntawm photovoltaic module. Thaum qhov tam sim no tshaj qhov teeb tsa tus nqi, lub photovoltaic module tau txiav tawm ntawm lub Circuit Court. Txoj kev no tuaj yeem tiv thaiv kev puas tsuaj los yog thim rov qab mus rau photovoltaic module vim muaj qhov tam sim no ntau dhau. Tus yuam sij rau kev kaw tam sim no yog saib xyuas qhov tam sim no thiab sib piv nrog tus nqi teeb tsa. Thaum qhov tam sim no tshaj li qhov teeb tsa, nws raug kaw los ntawm hluav taws xob lossis cov cuab yeej siv tshuab.
Ntxiv nrog rau qhov hluav taws xob kaw thiab kaw tam sim no, ob qho tib si kuj tuaj yeem ua ke rau kev sib txuas kaw. Piv txwv li, thaum cov zis hluav taws xob ntawm photovoltaic module tshaj qhov teeb tsa tus nqi lossis cov khoom tso tawm tam sim no tshaj li tus nqi teev, kev kaw haujlwm tau ua nyob rau tib lub sijhawm los tiv thaiv photovoltaic module zoo dua.
Photovoltaic module-theem ceev ceev yog txiav tawm lub photovoltaic module los ntawm Circuit Court los ntawm txhua yam los yog hluav taws xob txhais tau tias kom tsis txhob tso zis hluav taws xob ntawm lub hnub ci vaj huam sib luag. Cov txheej txheem kaw suav nrog kev kaw tshuab thiab hluav taws xob kaw, thiab cov hauv paus ntsiab lus kaw suav nrog kev kaw hluav taws xob thiab kev kaw tam sim no. Daim ntawv thov ntawm cov txheej txheem kaw thiab cov qauv no tuaj yeem tiv thaiv photovoltaic modules zoo, txuas ntxiv lawv lub neej kev pabcuam, thiab ua kom muaj kev nyab xeeb thiab ruaj khov ntawm photovoltaic systems.
Vim li cas qhov kev kaw nrawm ntawm photovoltaic modules tseem ceeb heev?
Muaj ntau qhov laj thawj rau hluav taws kub hauv photovoltaic fais fab nroj tsuag. Cov khoom siv uas muaj kev pheej hmoo loj tshaj ntawm hluav taws kub muaj xws li inverters, junction boxes, cables, thiab modules. Tsuav nws yog ib qho hluav taws xob, muaj kev pheej hmoo ntawm hluav taws kub vim tam sim no. Tsis tas li ntawd, nrog kev nce qib ntawm photovoltaic thev naus laus zis, qib hluav taws xob thiab tam sim no voltage ntawm cov khoom photovoltaic tau raug txhim kho tas li. Lub tshuab hluav taws xob photovoltaic tau hloov kho los ntawm thawj 600V tsim rau 1000V, thiab tsis ntev los no maj mam hloov mus rau 1500V. Cov hluav taws xob siab dua yuav ua rau hluav taws kub. Hluav taws kub hauv photovoltaic fais fab nroj tsuag ua rau muaj kev sib tw zoo rau cov neeg tua hluav taws. Tom qab qhov hluav taws kub tshwm sim hauv qhov system, qhov hluav taws xob siab ntawm ntau pua lossis ntau txhiab volts tseem yuav raug tsim tawm. Yog tias cov neeg tua hluav taws maj nrawm mus cawm, lawv txoj sia yuav raug hem. Nrog rau lub module-theem kaw nrawm nrawm, cov neeg tua hluav taws tuaj yeem txiav tawm kev sib txuas ntawm cov modules sai sai thiab cawm lub chaw nres tsheb fais fab.
Xaus
Txawm hais tias nws tseem nyuaj rau kev txhawb nqa tag nrho cov kev teeb tsa ntawm cov khoom sib txuas- theem ceev ceev cov khoom siv hauv ntau qhov chaw ntawm lub ntiaj teb vim muaj ntau yam xws li tus nqi, nws yuav tsum tau hais tias cov khoom siv - theem ceev ceev yog qhov tseem ceeb heev rau kev nyab xeeb ntawm photovoltaic fais fab nroj tsuag. Kuv ntseeg tias nrog kev nce qib ntawm cov thev naus laus zis tsis tu ncua, kev ua lag luam nrov thiab kev siv cov kev cai nyab xeeb, thiab maj mam ntxiv dag zog rau kev paub txog kev nyab xeeb, cov thev naus laus zis no yuav raug siv ntau dua los tiv thaiv cov nroj tsuag hluav taws xob ntau dua.
