Kugwiritsa ntchito Anti-reverse Ammeters mu Solar Energy System

Ndi chitukuko chofulumira cha mafakitale a photovoltaic, mphamvu zoikidwa zikuwonjezeka.M'madera ena, mphamvu yoyikapo imakhala yodzaza, ndipo makina oyendera dzuwa omwe angoikidwa kumene sangathe kugulitsa magetsi pa intaneti.Makampani opanga ma gridi amafunikira gridi yolumikizidwaPV machitidwezomangidwa m'tsogolo kukhala backflow-umboni magetsi kachitidwe.

Kodi Counterflow ndi chiyani?

Kodi reverse current ndi chiyani?Mu dongosolo la PV, mphamvu zamagetsi nthawi zambiri zimaperekedwa kuchokera ku gululi kupita ku katundu, zomwe zimatchedwa kutsogolo panopa.Pamene dongosolo la PV likuyikidwa, ngati mphamvu ya PV ndi yaikulu kuposa mphamvu ya katundu wamba, mphamvu yosagwiritsidwa ntchito imatumizidwa ku gridi.Monga momwe mayendedwe apano akuyendera ndi mosemphanitsa ndi wamakono, izi zimatchedwa 'reverse current'.Mu gridi yolumikizidwa ndi mita yanjira ziwiri, mphamvu yakutsogolo ndi mphamvu yoperekedwa kuchokera ku gridi kupita ku katundu, ndipo mphamvu yobwereranso ndiyo mphamvu yoperekedwa kuchokera ku dongosolo la PV kupita ku gridi.Dongosolo la backfeed PV limatanthauza kuti mphamvu yopangidwa ndi PV imatha kugwiritsidwa ntchito ndi katundu wamba ndipo sangathe kutumizidwa ku gridi.

Pamene PV inverter atembenuza mfundo za DC zomwe zimapangidwa ndi ma PV modules kukhala mphamvu za AC, pali zigawo za DC ndi ma harmonics, magawo atatu omwe alipo panopa komanso kusatsimikizika mu mphamvu yotulutsa.Mphamvu yopangidwa ikalowetsedwa mu gridi ya anthu onse, imayambitsa kuipitsidwa kwa gridi, komwe kungapangitse kuti magetsi a gridi asinthe komanso kusinthasintha.Ngati pali magwero ambiri opangira magetsi otere omwe akudyetsa mphamvu mu gridi, mphamvu yamagetsi ya gridiyi idzawonongeka kwambiri.Chifukwa chake, mtundu uwu wamagetsi opangira magetsi amtundu wa photovoltaic uyenera kukhala ndi zida zodzitchinjiriza zomwe zikuchitika kuti zisachitike.

Kodi kusintha kwanyengo kungapewedwe bwanji?

Anti-reversemfundo ntchito panopa: Ikani ananti-reversemita yapano kapena sensa yamakono pamalo olumikizirana ndi grid.Ikazindikira kutuluka kwapano ku gridi, imatumiza chizindikiro kwa inverter kudzera pakulankhulana kwa 485, ndipo inverter imachepetsa mphamvu yotulutsa mpaka kutulutsa kwatsopano ndi zero.Izi zimazindikiraanti-reversentchito yamakono.Malinga ndi magawo osiyanasiyana amagetsi amagetsi, makina a PV amatha kugawidwa mugawo limodzianti-reversedongosolo panopa ndi gawo atatuanti-reversedongosolo panopa.

Momwe mungasankhireanti-reversesmart mita yapano?

Mphamvu yamagetsi ya PV ikakhala yayikulu kuposa kuchuluka kwa katundu, mphamvu yakumbuyo imapangidwa.Timafunikira mita kuti tidziwe ndikuzindikira mphamvu yogwira ntchito ya inverter, ndiyeno mita imatumiza chizindikiro kudzera pa RS485 kulankhulana kuti igwirizane ndi deta ya inverter kuti iwononge mphamvu yotulutsa inverter kuti igwirizane ndi mphamvu zotulutsa ndi mphamvu zamagetsi.

Kulondola: Sankhani mita yanzeru yomwe imayesa molondola kugwiritsa ntchito magetsi kwabwino komanso koyipa.Iyenera kukhala yolondola kwambiri kuti iwonetsetse kuti kulipira ndi kuwunika kolondola.

Kugwirizana: Onetsetsani kuti mita yanzeru ikugwirizana ndi makina anu amagetsi ndi zofunikira.Iyenera kugwira ntchito mosasunthika ndi zida zanu zomwe zilipo ndikutha kulumikizana ndi makina owerengera.

Njira zolumikizirana: Onetsetsani kuti mita yanzeru imathandizira njira zoyankhulirana zomwe zimagwirizana ndi netiweki yamagetsi.Ma protocol wamba ndi Modbus, DLMS/COSEM ndi Zigbee.

Kasamalidwe ka data: Ganizirani za kuthekera kwa kasamalidwe ka data pa mita yanzeru.Iyenera kukhala ndi malo okwanira osungira ndikutha kutumiza deta ku dongosolo lapakati kuti lipereke ndalama ndi kusanthula.Yang'anani mamita omwe amapereka kubisa kwa data komanso kutumiza kotetezedwa.