Raws li cov tswv hnub ci ua liaj ua teb siv zog los txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm lawv cov haujlwm, DC kev xaiv thaiv tsis tuaj yeem tsis quav ntsej.Ua raws li kev txhais lus ntawm IEC cov qauv thiab coj mus rau hauv tus account xws li kev nyab xeeb, ob-sided nce, cable nqa peev xwm, cable poob thiab voltage poob, cov tswv cog tuaj yeem txiav txim siab qhov tsim nyog cable kom muaj kev nyab xeeb thiab ruaj khov ua haujlwm thoob plaws hauv lub neej ntawm photovoltaic. qhov system.
Kev ua haujlwm ntawm hnub ci modules hauv thaj teb tau cuam tshuam zoo heev los ntawm ib puag ncig.Lub luv luv Circuit Court tam sim no ntawm PV module cov ntaub ntawv cov ntaub ntawv yog raws li cov qauv kev sim nrog rau irradiance ntawm 1kw / m2, spectral cua zoo ntawm 1.5, thiab cell kub ntawm 25 c.Cov ntaub ntawv tam sim no tseem tsis suav nrog lub nraub qaum tam sim no ntawm ob-sided modules, yog li huab txhim kho thiab lwm yam;Kub;Peak irradiance;Sab nraub qaum overirradiance tsav los ntawm albedo cuam tshuam rau qhov luv luv tam sim no ntawm photovoltaic modules.
Xaiv cov kev xaiv cable rau PV tej yaam num, tshwj xeeb tshaj yog ob-sided tej yaam num, yuav xav txog ntau yam txawv.
Xaiv txoj cai cable
Dc cables yog cov hlab ntshav ntawm PV systems vim lawv txuas cov modules rau lub thawv sib dhos thiab inverter.
Tus tswv cog yuav tsum xyuas kom meej tias qhov loj ntawm lub cable yog ua tib zoo xaiv raws li qhov tam sim no thiab qhov hluav taws xob ntawm photovoltaic system.Cables siv los txuas DC ib feem ntawm daim phiaj-txuas PV systems kuj yuav tsum muaj peev xwm tiv taus ib puag ncig, qhov hluav taws xob thiab cov xwm txheej tam sim no.Qhov no suav nrog cov cua kub ntawm qhov tam sim no thiab hnub ci nce, tshwj xeeb tshaj yog tias ntsia ze ntawm lub module.
Nov yog qee qhov kev txiav txim siab tseem ceeb.
Kev daws teeb meem kab tsim
Hauv kev tsim qauv PV, kev txiav txim siab luv luv tuaj yeem ua rau kev xaiv khoom siv tsis zoo thiab ua rau muaj kev nyab xeeb mus ntev thiab teeb meem kev ua haujlwm, nrog rau kev puas tsuaj loj xws li hluav taws.Cov nram qab no yuav tsum tau ua tib zoo soj ntsuam kom ua tau raws li lub teb chaws kev nyab xeeb thiab cov qauv zoo:
Voltage poob txwv: Qhov poob ntawm lub hnub ci PV cable yuav tsum raug txwv, suav nrog DC poob hauv txoj hlua hnub ci vaj huam sib luag thiab AC poob hauv cov zis inverter.Ib txoj hauv kev los txwv cov kev poob no yog txo qis qhov kev poob qis hauv cable.DC voltage poob feem ntau yuav tsum tsawg dua 1% thiab tsis ntau tshaj 2%.High DC voltage tee kuj nce voltage dispersion ntawm PV hlua txuas nrog tib lub siab tshaj plaws lub zog taw tes nrhiav (MPPT) system, uas ua rau ntau dua mismatch poob.
Cable poob: Yuav kom ntseeg tau lub zog tso zis, nws raug nquahu kom tsis txhob cable poob ntawm tag nrho cov qis-voltage cable (los ntawm module rau transformer) tsis pub tshaj 2%, qhov zoo tshaj 1.5%.
Lub peev xwm nqa tam sim no: Derating yam ntawm cov cable, xws li cable laying method, kub nce, nteg deb, thiab tus naj npawb ntawm parallel cables, yuav txo tau lub peev xwm nqa tam sim no ntawm lub cable.
Ob chav sided IEC tus qauv
Cov qauv yog qhov tseem ceeb los xyuas kom muaj kev ntseeg siab, kev nyab xeeb thiab zoo ntawm cov tshuab photovoltaic, nrog rau kev xaim.Thoob plaws ntiaj teb, muaj ntau yam kev lees paub rau kev siv DC cables.Cov txheej txheem zoo tshaj plaws yog IEC tus qauv.
IEC 62548 teeb tsa cov kev cai tsim qauv rau photovoltaic arrays, suav nrog DC array thaiv, cov khoom siv tiv thaiv hluav taws xob, cov keyboards thiab cov kev cai hauv av.Cov qauv tshiab kawg ntawm IEC 62548 qhia txog cov txheej txheem kev suav tam sim no rau ob sab modules.IEC 61215: 2021 Qhia txog cov ntsiab lus thiab kev sim ntsuas rau ob sab photovoltaic modules.Lub hnub ci irradiance xeem tej yam kev mob ntawm ob-sided Cheebtsam yog qhia.BNPI (ob npaug-sided nameplate irradiance): Lub hauv ntej ntawm PV module tau txais 1 kW / m2 hnub ci irradiance, thiab sab nraub qaum tau txais 135 W / m2;BSI (Ob-sided stress irradiance), qhov twg PV module tau txais 1 kW / m2 hnub ci irradiance nyob rau pem hauv ntej thiab 300 W / m2 tom qab.
Kev tiv thaiv overcurrent
Cov cuab yeej tiv thaiv overcurrent yog siv los tiv thaiv kev phom sij uas tshwm sim los ntawm overload, luv luv Circuit Court, lossis hauv av txhaum.Cov khoom siv tiv thaiv overcurrent feem ntau yog Circuit Court breakers thiab fuses.
Cov cuab yeej tiv thaiv overcurrent yuav txiav lub voj voog yog tias qhov rov qab tam sim no tshaj li qhov kev tiv thaiv tam sim no, yog li lub hauv ntej thiab rov qab tam sim no ntws los ntawm DC cable yuav tsis siab tshaj qhov ntsuas tam sim no ntawm lub cuab yeej.Lub peev xwm nqa tau ntawm DC cable yuav tsum sib npaug rau qhov ntsuas tam sim no ntawm cov khoom siv tiv thaiv overcurrent.
Post lub sij hawm: Dec-22-2022