Kodi kusankha chingwe choyenera?

M'zaka zaposachedwapa, teknoloji yamafakitale a photovoltaicyakula mofulumira komanso mofulumira.Mphamvu za ma modules amodzi zakhala zazikulu komanso zazikulu, ndipo zamakono za chingwe zakhalanso zazikulu komanso zazikulu.Panopa ma module amphamvu kwambiri afika kupitilira 17A.Pankhani ya mapangidwe a dongosolo, kugwiritsa ntchito zida zamphamvu kwambiri komanso malo osungika oyenerera kungachepetse mtengo woyambira wandalama komanso mtengo wa ola la kilowatt.Mtengo wa zingwe za AC ndi DC mu dongosolo siwotsika.Kodi kupanga ndi kusankha kumayenera kuchitidwa bwanji kuti achepetse ndalama?

1. Kusankha zingwe za DC

Chingwe cha DC chimayikidwa panja.Nthawi zambiri tikulimbikitsidwa kusankha zingwe zapadera za photovoltaic zomwe zalumikizidwa ndi ma radiation.Pambuyo pa kuyatsa kwamphamvu kwa ma elekitironi amtengo wapatali, mawonekedwe a maselo azitsulo zosungunulira chingwe amasintha kuchokera ku mzere kupita ku mawonekedwe atatu a ma netiweki amtundu wa ma molekyulu, ndipo kukana kutentha kumawonjezeka kuchoka pa 70 ° C mpaka 90 ° C, 105 ° C, 125 ° C, 135 ° C, Ngakhale mpaka 150 ° C, mphamvu yonyamula panopa ndi 15-50% kuposa ya zingwe zofanana.Imatha kupirira kutentha kwambiri komanso kukokoloka kwa mankhwala ndipo itha kugwiritsidwa ntchito panja kwa zaka zopitilira 25.Posankha zingwe za DC, sankhani zinthu kuchokera kwa opanga nthawi zonse okhala ndi ziphaso zoyenera kuti muwonetsetse kuti zikugwiritsidwa ntchito panja kwa nthawi yayitali.

Panopa, ambiri ntchitophotovoltaic DC chingwendi PV1-F1*4 44 square mita chingwe.Komabe, ndi kuwonjezeka kwa ma modules a photovoltaic panopa komanso kuwonjezeka kwa mphamvu ya inverter imodzi, kutalika kwa chingwe cha DC kukuwonjezekanso.6 masikweya mita Kugwiritsa ntchito zingwe za DC kukuchulukiranso.

Malinga ndi zofunikira, zimalimbikitsidwa kuti kutayika kwa photovoltaic DC sikuyenera kupitirira 2%.Timagwiritsa ntchito muyezo uwu kupanga momwe tingasankhire zingwe za DC.Mzere kukana kwa PV1-F1 * 4mm² DC chingwe ndi 4.6mΩ/mita, ndi kukana mzere wa PV6mm² DC chingwe ndi 3.1 mΩ/mita, poganiza kuti DC gawo ntchito voteji ndi 600V, 2% voteji dontho imfa ndi 12V, poganiza. kuti gawo lamakono ndi 13A, pogwiritsa ntchito chingwe cha 4mm² DC, mtunda pakati pa mapeto akutali kwambiri a gawo ndi inverter akulimbikitsidwa kuti asapitirire mamita 120 (chingwe chimodzi, (kupatula mizati yabwino ndi yoipa), ngati mtunda uli waukulu kuposa uwu. mtunda, tikulimbikitsidwa kusankha chingwe cha 6mm² DC, koma tikulimbikitsidwa kuti mtunda wapakati pa mapeto a chigawocho ndi inverter usapitirire mamita 170.

2. Kuwerengera kwa chingwe cha Photovoltaic

Pofuna kuchepetsa mtengo wa dongosolo, zigawozo ndima inverters a malo opangira magetsi a photovoltaicsamasinthidwa kawirikawiri mu chiŵerengero cha 1: 1.M'malo mwake, masanjidwe ena opitilira muyeso amapangidwa motengera momwe zinthu zimayendera, zosowa za polojekiti, ndi zina zambiri. Mwachitsanzo, gawo la 110KW ndi inverter ya 100KW, yowerengedwa kutengera nthawi 1.1 mbali ya AC yopitilira muyeso wa inverter, kuchuluka kwa AC kutulutsa pano kuli pafupifupi. 158A.Chingwe cha AC chikhoza kusankhidwa kutengera kuchuluka kwamphamvu komwe kumatulukainverter.Chifukwa zilibe kanthu kuti zingasinthidwe ndi zigawo zingati, kulowetsa kwa AC kwa inverter sikudzapitirira kuchuluka kwaposachedwa kwa inverter.

3. Inverter AC linanena bungwe magawo

Zingwe zamkuwa za AC zomwe zimagwiritsidwa ntchito kwambiri pamakina a photovoltaic zimaphatikizapo BVR ndi YJV.BVR amatanthauza mkuwa pachimake PVC insulated waya flexible, YJV mtanda zogwirizana polyethylene insulated mphamvu chingwe.Posankha, tcherani khutu ku mlingo wa voteji ndi mlingo wa kutentha kwa chingwe., kusankha mtundu woletsa moto, mawonekedwe a chingwe amawonetsedwa ndi kuchuluka kwa ma cores, gawo lodziwikiratu ndi gawo lamagetsi: Chingwe choyimira chingwe choyimira nthambi imodzi, 1 * gawo lodziwika bwino, monga: 1 * 25mm 0.6 / 1kV, kutanthauza 25 lalikulu mita ya zingwe.Mipikisano yokhotakhota nthambi yoyimira chingwe, kuchuluka kwa zingwe zomwe zili mugawo lomwelo * gawo lodziwikiratu, monga: 3 * 50 + 2 * 25mm 0.6/1KV, kutanthauza mawaya atatu okhala ndi masikweya 50, waya umodzi wa 25 square ndale ndi A 25 square ground waya.