Ngophuhliso olukhawulezayo lweshishini le-photovoltaic, umthamo ofakiweyo uyanda.Kwezinye iindawo, umthamo ofakiweyo ugcwele, kwaye iinkqubo ezisanda kufakwa zelanga azikwazi ukuthengisa umbane kwi-Intanethi.Iinkampani zegridi zifuna ukuba igridi-iqhagamshelweIinkqubo zePVeyakhelwe kwixa elizayo ibe yinkqubo yokuvelisa amandla okubuyela emva.
Yintoni i-Counterflow?
Yintoni i-reverse current?Kwinkqubo ye-PV, amandla ombane ahanjiswa ngokubanzi ukusuka kwigridi ukuya kumthwalo, obizwa ngokuba yi-front current.Xa inkqubo ye-PV ifakwe, ukuba amandla enkqubo ye-PV makhulu kunamandla omthwalo wendawo, amandla angasetyenziswanga athunyelwa kwigridi.Njengoko isalathiso somsinga sichasane neso sangoku esiqhelekileyo, oku kubizwa ngokuba yi-'reverse current'.Kwimitha yendlela-embini edityaniswe kwigridi, amandla angaphambili amandla ahanjiswa ukusuka kwigridi ukuya kumthwalo, kwaye umva umva amandla anikezelwe kwinkqubo yePV ukuya kwigridi.Inkqubo ye-backfeed ye-PV ithetha ukuba amandla aveliswa yi-PV angasetyenziswa kuphela yimithwalo yendawo kwaye ayikwazi ukuthunyelwa kwigridi.
Xa i-PV inverter iguqula amanqaku e-DC aveliswa kwiimodyuli ze-PV kumandla e-AC, kukho amacandelo e-DC kunye ne-harmonics, inqanaba lesithathu lokungalingani kwangoku kunye nokungaqiniseki kumandla aphumayo.Xa amandla avelisiweyo efakwe kwigridi kawonkewonke, iya kubangela ukungcola kwe-harmonic kwigridi, enokubangela ukuba i-voltage yegridi iguquguquke kwaye idibanise.Ukuba mininzi loo mithombo yokuvelisa amandla esondla amandla kwigridi, umgangatho wamandla wegridi uya kuthotywa ngokumandla.Ngoko ke, olu hlobo lwenkqubo yokuvelisa amandla e-photovoltaic kufuneka ixhotyiswe ngezixhobo zokukhusela zangoku zokukhusela ukwenzeka kwe-reverse current.
Unokuthintelwa njani umva?
Anti-reverseumgaqo osebenzayo wangoku: Faka ianti-reverseimitha yangoku okanye inzwa yangoku kwindawo yodibaniso lwegridi.Xa ibona ukuhamba kwangoku kwigridi, ithumela isignali kwi-inverter ngonxibelelwano lwe-485, kwaye i-inverter iyanciphisa amandla okuphuma kude kube yi-reverse output current.Oku kuqonda ianti-reverseumsebenzi wangoku.Ngokwamanqanaba ombane ahlukeneyo enkqubo, inkqubo yePV inokwahlulwa ibe yinqanaba elinyeanti-reverseinkqubo yangoku kunye nesigaba esithathuanti-reverseinkqubo yangoku.
Indlela yokukhetha ianti-reverseimitha smart yangoku?
Xa ukuveliswa kwamandla e-PV kukhulu kunemfuno yomthwalo, amandla angasemva ayenziwa.Sidinga imitha ukufumanisa kunye nokumisela umbane osebenzayo we-inverter, kwaye emva koko imitha ithumela umqondiso nge-RS485 unxibelelwano ukusebenzisana nedatha ye-inverter yokulawula amandla okuphuma kwe-inverter ukulinganisa amandla okuvelisa kunye namandla ombane.
Ukuchaneka: Khetha imitha ehlakaniphile elinganisa ngokuchanekileyo ukusetyenziswa kombane okulungileyo kunye nokungalunganga.Kufuneka ichaneke kakhulu ukuze kuqinisekiswe ukuhlawuliswa okuchanekileyo kunye nokubeka iliso.
Ukuhambelana: Jonga ukuba imitha ehlakaniphile iyahambelana na nenkqubo yakho yombane kunye neemfuno zosetyenziso.Kufuneka isebenze ngaphandle komthungo kunye neziseko ezingundoqo zakho ezikhoyo kwaye ikwazi ukuqhagamshelana nenkqubo yokulinganisa umbane.
Iiprothokholi zonxibelelwano: Qinisekisa ukuba imitha ehlakaniphile ixhasa iiprothokholi zonxibelelwano ezihambelana nomsebenzi wothungelwano.Iiprothokholi eziqhelekileyo yiModbus, DLMS/COSEM kunye neZigbee.
Ulawulo lwedatha: Qwalasela amandla olawulo lwedatha yemitha ehlakaniphile.Kufuneka ibe nendawo yokugcina eyaneleyo kunye nokukwazi ukudlulisa idatha kwisistim ephakathi yokuhlawula kunye nokuhlalutya.Khangela iimitha ezibonelela ngofihlo lwedatha kunye nokudluliselwa okukhuselekileyo.
Ixesha lokuposa: Sep-08-2023