Njengoko abanini beefama zelanga bezama ukunyusa ukusebenza kunye nokusebenza kakuhle kwemisebenzi yabo, ukhetho lwe-DC wiring alunakungahoywa.Ukulandela ukutolikwa kwemigangatho ye-IEC kunye nokuthathela ingqalelo izinto ezinje ngokhuseleko, inzuzo enamacala amabini, umthamo wokuthwala intambo, ilahleko yentambo kunye nokuhla kwamandla ombane, abanikazi bezityalo banokumisela intambo efanelekileyo yokuqinisekisa ukusebenza ngokukhuselekileyo kunye nokuzinza kumjikelezo wobomi be-photovoltaic. inkqubo.
Ukusebenza kweemodyuli zelanga kwintsimi kuchaphazeleka kakhulu kwiimeko zokusingqongileyo.Isiphaluka esifutshane sangoku kwiphepha ledatha yemodyuli ye-PV isekelwe kwiimeko zovavanyo eziqhelekileyo ezibandakanya i-irradiance ye-1kw / m2, umgangatho womoya we-spectral we-1.5, kunye nokushisa kweseli ye-25 c.Iphepha ledatha langoku aliyithatheli ngqalelo indawo yangasemva yeemodyuli ezinamacala amabini, ngoko ke ukuphuculwa kwamafu kunye nezinye izinto;Ubushushu;I-peak irradiance;I-overirradiance yangasemva eqhutywa yi-albedo ichaphazela kakhulu isiphaluka esifutshane sangoku seemodyuli ze-photovoltaic.
Ukukhetha iinketho zekhebula kwiiprojekthi zePV, ngakumbi iiprojekthi ezinamacala amabini, kubandakanya ukuqwalasela izinto ezininzi eziguquguqukayo.
Khetha intambo elungileyo
Iintambo ze-Dc zibubomi beenkqubo ze-PV kuba zidibanisa iimodyuli kwibhokisi yendibano kunye ne-inverter.
Umnini wesityalo kufuneka aqinisekise ukuba ubukhulu bekhebula bukhethwe ngokucokisekileyo ngokuhambelana nombane kunye nenkqubo ye-photovoltaic.Iintambo ezisetyenziselwa ukudibanisa isahlulo se-DC senkqubo ye-PV edityanisiweyo yegridi nayo kufuneka imelane nokusingqongileyo, umbane kunye neemeko zangoku.Oku kubandakanya impembelelo yokufudumala yenzuzo yangoku kunye nelanga, ngakumbi ukuba ifakwe kufuphi nemodyuli.
Nantsi eminye imiba ephambili.
Uyilo lwe-wiring yokuhlala
Kuyilo lwenkqubo ye-PV, ukuqwalaselwa kweendleko zexesha elifutshane kunokukhokelela ekukhethweni kakubi kwezixhobo kwaye kukhokelela kwimiba yokhuseleko lwexesha elide kunye nokusebenza, kubandakanywa nemiphumo eyintlekele njengomlilo.Le miba ilandelayo kufuneka ivavanywe ngononophelo ukuhlangabezana nokhuseleko lwesizwe kunye nemigangatho yomgangatho:
Imida yokuhla kwamandla ombane: Ilahleko yentambo yelanga yePV kufuneka icuthwe, kubandakanywa iilahleko zeDC kumtya wepaneli yelanga kunye neelahleko ze-AC kwi-inverter output.Enye indlela yokunciphisa le lahleko kukunciphisa ukuhla kwamandla ombane kwintambo.Ukuhla kwamandla ombane e-DC kufuneka ngokubanzi kube ngaphantsi kwe-1% kwaye kungabi ngaphezu kwe-2%.Ukuhla kwamandla ombane aphezulu eDC nako konyusa ukusasazwa kwamandla ombane kwiintambo zePV eziqhagamshelwe kweyona nkqubo iphezulu yokulandelela indawo yamandla (MPPT), okukhokelela kwilahleko ephezulu engahambelaniyo.
Ilahleko yekhebula: Ukuqinisekisa ukukhutshwa kwamandla, kucetyiswa ukuba ukulahleka kwentambo ye-cable ye-low-voltage yonke (ukusuka kwimodyuli ukuya kwi-transformer) ayidluli i-2%, ngokufanelekileyo i-1.5%.
Umthamo okhoyo ngoku: Ukunciphisa izinto zekhebula, ezifana nendlela yokubeka intambo, ukunyuka kweqondo lokushisa, ukubeka umgama, kunye nenani leentambo ezihambelanayo, ziya kunciphisa umthamo wangoku wekhebula.
Umgangatho we-IEC enamacala amabini
Imigangatho ibalulekile ukuqinisekisa ukuthembeka, ukhuseleko kunye nomgangatho weenkqubo ze-photovoltaic, kuquka i-wiring.Kwihlabathi jikelele, kukho imigangatho eyamkelekileyo yokusetyenziswa kweentambo zeDC.Eyona seti ibanzi ngumgangatho we-IEC.
I-IEC 62548 ibeka iimfuno zoyilo lwee-photovoltaic arrays, kubandakanya i-DC array wiring, izixhobo zokukhusela umbane, iiswitshi kunye neemfuno zomhlaba.Idrafti yamva nje ye-IEC 62548 ichaza indlela yokubala yangoku yeemodyuli ezimacala amabini.I-IEC 61215: 2021 Ichaza inkcazo kunye neemfuno zokuvavanya kwiimodyuli ze-photovoltaic eziphindwe kabini.Iimeko zokuvavanya i-solar irradiance yamacandelo amacandelo amabini aziswa.I-BNPI (i-double-sided nameplate irradiance): Umphambili wemodyuli ye-PV ifumana i-1 kW / m2 i-solar irradiance, kwaye umva ufumana i-135 W / m2;I-BSI (i-Double-sided irradiance yoxinzelelo), apho imodyuli ye-PV ifumana i-1 kW / m2 i-solar irradiance ngaphambili kunye ne-300 W / m2 ngasemva.
Ukhuseleko lwangoku
Isixhobo sokukhusela i-Overcurrent sisetyenziselwa ukuthintela iingozi ezinokubakho ezibangelwa ukugcwala, isiphaluka esifutshane, okanye impazamo yomhlaba.Ezona zixhobo zixhaphakileyo zokukhusela i-overcurrent zi-breaker circuit kunye ne-fuses.
Isixhobo sokukhusela i-overcurrent siyakunqumla isiphaluka ukuba i-reverse yangoku idlula ixabiso lokukhusela langoku, ngoko i-front and reverse current ejikelezayo ngentambo ye-DC ayinakuze ibe phezulu kunomlinganiselo olinganisiweyo wesixhobo.Umthamo wokuthwala wentambo ye-DC kufuneka ulingane nomgangatho wangoku wesixhobo sokhuseleko esigqithisekileyo.
Ixesha lokuposa: Dec-22-2022