Makampani a PV ali ndi mawu akuti: 2018 ndi chaka choyamba cha malo opangira magetsi a photovoltaic.Chiganizochi chinatsimikiziridwa m'munda wa photovoltaic photovoltaic box 2018 Nanjing anagawa maphunziro aukadaulo a photovoltaic!Okhazikitsa ndi ogawa m'dziko lonselo adasonkhana ku Nanjing kuti aphunzire mwadongosolo chidziwitso cha zomangamanga zamagetsi zamagetsi za photovoltaic.
Monga katswiri pazithunzi za photovoltaic inverters, Renac wakhala akudzipereka kwa sayansi ya photovoltaic.Pamalo ophunzitsira a Nanjing, Renac Technical Service Manager adaitanidwa kuti agawane zosankhidwa za ma inverters ndi ntchito zanzeru.Pambuyo pa kalasi, ophunzirawo adathandizidwa kusanthula mavuto omwe amapezeka pamagetsi a photovoltaic ndipo adalandira chitamando chimodzi kuchokera kwa ophunzira.
Malangizo:
1. Chojambula cha inverter sichiwonetsedwa
Kusanthula kolephera:
Popanda kulowetsa kwa DC, inverter LCD imayendetsedwa ndi DC.
Zomwe Zingachitike:
(1) Mpweya wa chigawocho sikokwanira, magetsi olowera ndi otsika kuposa magetsi oyambira, ndipo inverter siigwira ntchito.Mphamvu yamagetsi imagwirizana ndi ma radiation a solar.
(2) Malo olowera a PV asinthidwa.PV terminal ili ndi mizati iwiri, zabwino ndi zoyipa, ndipo ziyenera kugwirizana.Sangalumikizidwe mosiyana ndi magulu ena.
(3) Kusintha kwa DC sikutsekedwa.
(4) Chingwe chikalumikizidwa mofanana, chimodzi mwazolumikizira sichilumikizidwa.
(5) Pali gawo lalifupi mu module, zomwe sizipangitsa kuti zingwe zina zigwire ntchito.
Yankho:
Yezerani voteji ya DC ya inverter ndi ma voltage osiyanasiyana a multimeter.Mphamvu yamagetsi ikakhala yabwinobwino, voteji yonse ndi kuchuluka kwa voteji ya gawo lililonse.Ngati palibe magetsi, fufuzani chosinthira cha DC, chipika cha terminal, cholumikizira chingwe, ndi zigawo zake;ngati pali magawo angapo, patulani mwayi woyesa.
Ngati inverter imagwiritsidwa ntchito kwakanthawi ndipo palibe chifukwa chakunja chomwe chimapezeka, gawo la inverter hardware ndi lolakwika.Lumikizanani ndi injiniya waukadaulo atagulitsa.
2. Inverter sichilumikizidwa ndi netiweki
Kusanthula kolephera:
Palibe kulumikizana pakati pa inverter ndi gridi.
Zomwe Zingachitike:
(1) Kusintha kwa AC sikutsekedwa.
(2) The AC linanena bungwe terminal wa inverter si kugwirizana.
(3) Pamene mawaya, chomaliza chapamwamba cha inverter output terminal chimamasulidwa.
Yankho:
Yezerani voteji ya AC ya inverter ndi ma voltage osiyanasiyana a multimeter.Munthawi yabwinobwino, chotulukapo chiyenera kukhala ndi 220V kapena 380V voteji.Ngati sichoncho, fufuzani ngati cholumikizira chatsekedwa, ngati cholumikizira cha AC chatsekedwa, ndipo ngati chotchingira choteteza kutayikira chatsekedwa.
3. Inverter PV Overvoltage
Kusanthula kolephera:
Alamu ya DC yakwera kwambiri.
Zomwe Zingachitike:
Kuchulukirachulukira kwa zigawo zotsatizana kumapangitsa kuti voteji ipitirire malire a voliyumu ya inverter.
Yankho:
Chifukwa cha mawonekedwe a kutentha kwa zigawozo, kutentha kutsika, kumapangitsa kuti magetsi azitha.Ma voliyumu amtundu wa inverter ya chingwe cha gawo limodzi ndi 50-600V, ndipo mtundu wamagetsi womwe ukufunidwa uli pakati pa 350-400.Magawo olowera magetsi a inverter yamagawo atatu ndi 200-1000V.Mtundu wa post-voltage uli pakati pa 550-700V.Mumtundu uwu wamagetsi, mphamvu ya inverter ndiyokwera kwambiri.Pamene ma radiation ali otsika m'mawa ndi madzulo, amatha kupanga magetsi, koma sizimapangitsa kuti magetsi apitirire malire apamwamba a inverter voteji, kuchititsa alamu ndikuyimitsa.
4. Kulakwitsa kwa inverter inverter
Kusanthula kolephera:
Kukaniza kwamphamvu kwa photovoltaic system pansi ndi zosakwana 2 megohms.
Zomwe Zingachitike:
Ma module a dzuwa, mabokosi ophatikizika, zingwe za DC, ma inverters, zingwe za AC, ma wiring terminals, ndi zina zotere, zimakhala ndi kagawo kakang'ono pansi kapena kuwonongeka kwa wosanjikiza.Ma terminals a PV ndi ma wiring a AC ndi omasuka, zomwe zimapangitsa kuti madzi alowe.
Yankho:
Lumikizani gululi, inverter, yang'anani kukana kwa gawo lililonse mpaka pansi, pezani zovuta, ndikusintha.
5. Kulakwitsa kwa gridi
Kusanthula kolephera:
Magetsi a gridi ndi ma frequency ndi otsika kwambiri kapena okwera kwambiri.
Zomwe Zingachitike:
M'madera ena, maukonde akumidzi sanamangidwenso ndipo magetsi a gridi sali mkati mwa malamulo achitetezo.
Yankho:
Gwiritsani ntchito ma multimeter kuti muyese mphamvu ya gridi ndi ma frequency, ngati sakudikira kuti gululi ibwerere mwakale.Ngati gridi yamagetsi ndi yabwinobwino, ndiye inverter yomwe imazindikira kulephera kwa bolodi ladera.Lumikizani ma terminal onse a DC ndi AC pamakina ndikulola kuti inverter ituluke kwa mphindi 5.Tsekani magetsi.Ngati ikhoza kuyambiranso, ngati sichingabwezeretsedwe, funsani.Pambuyo-kugulitsa luso injiniya.