Imboni ye-PV inesisho esithi: I-2018 unyaka wokuqala wesitshalo samandla we-photovoltaic esatshalaliswa.Lesi sigwebo siqinisekisiwe emkhakheni webhokisi le-photovoltaic photovoltaic 2018 i-Nanjing isabalalise inkambo yokuqeqeshwa kobuchwepheshe be-photovoltaic!Abafaki nabasabalalisi ezweni lonke bahlangane e-Nanjing ukuze bafunde ngokuhlelekile ulwazi lokwakhiwa kwesikhungo samandla e-photovoltaic esabalalisiwe.
Njengochwepheshe emkhakheni we-photovoltaic inverters, i-Renac ibilokhu inikezelwe kwisayensi ye-photovoltaic.Esizeni sokuqeqeshwa saseNanjing, uMphathi Wenkonzo Yezobuchwepheshe wakwaRenac wamenywa ukuba abelane ngokukhethwa kwama-inverter kanye nezinsizakalo ezihlakaniphile.Ngemva kwekilasi, abafundi basizwa ukuba bahlaziye izinkinga ezivamile zeziteshi zikagesi ze-photovoltaic futhi bathola ukutuswa ngazwi linye kubafundi.
Amathiphu:
1. Isikrini se-inverter asivezwa
Ukuhlaziywa kokwehluleka:
Ngaphandle kokufaka kwe-DC, i-inverter LCD inikwa amandla yi-DC.
Izimbangela ezingenzeka:
(1) I-voltage yengxenye ayanele, i-voltage yokufaka iphansi kune-voltage yokuqala, futhi i-inverter ayisebenzi.I-voltage yengxenye ihlobene nemisebe yelanga.
(2) Itheminali yokufaka ye-PV ihlehlisiwe.Itheminali ye-PV inezigxobo ezimbili, ezinhle nezingezinhle, futhi kufanele zihambisane.Azikwazi ukuxhunywa ngokuphambene namanye amaqembu.
(3) Iswishi ye-DC ayivaliwe.
(4) Uma intambo ixhunywe ngokuhambisana, esinye sezixhumi asixhunyiwe.
(5) Kunomjikelezo omfushane kumojula, okwenza kungabikho ezinye izintambo ezisebenzayo.
Isixazululo:
Linganisa i-voltage ye-DC ye-inverter ngobubanzi be-voltage ye-multimeter.Uma i-voltage ijwayelekile, isamba se-voltage iyisamba se-voltage yengxenye ngayinye.Uma ingekho i-voltage, bese uhlola i-DC switch, i-terminal block, isixhumi sekhebula, nezingxenye ngokulandelana kwazo;uma kunezingxenye eziningi, hlukanisa ukufinyelela kokuhlola.
Uma i-inverter isetshenziswa isikhathi esithile futhi kungekho sizathu sangaphandle esitholakalayo, isifunda se-inverter hardware sinephutha.Xhumana nonjiniyela wezobuchwepheshe wangemva kokuthengisa.
2. I-inverter ayixhunyiwe kunethiwekhi
Ukuhlaziywa kokwehluleka:
Akukho ukuxhumana phakathi kwe-inverter negridi.
Izimbangela ezingenzeka:
(1) Iswishi ye-AC ayivaliwe.
(2) Itheminali yokuphuma kwe-AC ye-inverter ayixhunyiwe.
(3) Uma ufaka izintambo, itheminali engaphezulu yetheminali ephumayo ye-inverter iyaxegiswa.
Isixazululo:
Linganisa i-voltage ephumayo ye-AC ye-inverter ngobubanzi be-voltage ye-multimeter.Ngaphansi kwezimo ezijwayelekile, i-terminal ephumayo kufanele ibe ne-voltage engu-220V noma engu-380V.Uma kungenjalo, hlola ukuthi i-terminal yokuxhuma ikhululekile yini, uma iswishi ye-AC ivaliwe, futhi uma iswishi yokuvikela ukuvuza inqanyuliwe.
3. Inverter PV Overvoltage
Ukuhlaziywa kokwehluleka:
I-alamu ye-DC voltage ephezulu kakhulu.
Izimbangela ezingenzeka:
Inani eleqile lezingxenye ochungechungeni libangela i-voltage ukuthi idlule umkhawulo wokufakwayo kagesi we-inverter.
Isixazululo:
Ngenxa yezici zokushisa zezingxenye, izinga lokushisa liphansi, i-voltage ephezulu.Ububanzi be-voltage yokufaka ye-inverter yeyunithi yesigaba esisodwa ngu-50-600V, futhi ububanzi beyunithi yezinhlamvu ezihlongozwayo buphakathi kuka-350-400.Ububanzi be-voltage yokufaka ye-inverter yeyunithi yezigaba ezintathu ngu-200-1000V.Ibanga le-post-voltage liphakathi kuka-550-700V.Kulolu hlu lwe-voltage, ukusebenza kahle kwe-inverter kuphakeme kakhulu.Lapho imisebe iphansi ekuseni nakusihlwa, ingakwazi ukukhiqiza ugesi, kodwa ayibangeli ukuthi i-voltage idlule umkhawulo ophezulu we-voltage ye-inverter, okubangela i-alamu nokumisa.
4. Iphutha le-inverter insulation
Ukuhlaziywa kokwehluleka:
Ukumelana nokufakwa kwesistimu ye-photovoltaic phansi kungaphansi kwama-megohms angu-2.
Izimbangela ezingenzeka:
Amamojula elanga, amabhokisi okuhlanganayo, izintambo ze-DC, ama-inverter, izintambo ze-AC, amatheminali okufaka izintambo, njll., anomjikelezo omfushane phansi noma umonakalo kungqimba lokufakelwa.Amatheminali e-PV kanye nezindlu zezintambo ze-AC azikhululekile, okuholela ekungeneni kwamanzi.
Isixazululo:
Nqamula igridi, inverter, hlola ukumelana kwengxenye ngayinye phansi, thola amaphuzu enkinga, bese ufaka esikhundleni.
5. Iphutha legridi
Ukuhlaziywa kokwehluleka:
I-voltage yegridi nefrikhwensi iphansi kakhulu noma iphezulu kakhulu.
Izimbangela ezingenzeka:
Kwezinye izindawo, inethiwekhi yasemakhaya ayikakhiwa kabusha futhi amandla kagesi egridi awekho ngaphansi kobubanzi bemithetho yezokuphepha.
Isixazululo:
Sebenzisa i-multimeter ukukala i-voltage yegridi nefrikhwensi, uma iphelelwe ukulinda ukuthi igridi ibuyele kokujwayelekile.Uma igridi yamandla ijwayelekile, yi-inverter ebona ukwehluleka kwebhodi lesifunda.Nqamula wonke amatheminali e-DC kanye ne-AC omshini futhi uvumele isiguquli siphume cishe imizuzu emi-5.Vala ugesi.Uma ingaqaliswa kabusha, uma ingabuyiselwa, xhumana.Ngemva kokuthengisa unjiniyela wezobuchwepheshe.