Lub PV kev lag luam muaj cov lus hais tias: 2018 yog thawj xyoo ntawm kev faib cov khoom siv hluav taws xob fais fab. Kab lus no tau lees paub nyob rau hauv lub teb photovoltaic photovoltaic 2018 nanjing faib cov photovoltaic Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Technology Cov ntawv sau thiab cov neeg xa khoom thoob plaws lub teb chaws sib sau ua ke hauv Nanjing kom cov txheej txheem paub txog kev faib cov khoom siv hluav taws xob faib.
Raws li tus kws tshaj lij hauv daim teb ntawm photovoltaic inverters, Renac yeej ib txwm tau mob siab rau photovoltaic science. Ntawm Nanjing Spressite Site, Renac cov kws pabcuam pabcuam raug caw tuaj qhia cov kev xaiv ntawm inverters thiab cov kev pab ntse. Tom qab chav kawm, cov tub ntxhais kawm tau pab soj ntsuam cov teeb meem photovoltaic lub zog thiab tau txais kev qhuas los ntawm cov tub ntxhais kawm.
Cov lus qhia:
1. Lub vijtsam inverter tsis tshwm
Kev soj ntsuam tsis ua tiav:
Yog tsis muaj DC cov tswv yim, cov inverter LCD yog siv los ntawm DC.
Ua tau rau:
(1) Cov hluav taws xob ntawm cov khoom siv tsis txaus, qhov kev tawm tswv yim yog qis dua qhov pib voltage, thiab inverter tsis ua haujlwm. Txheej txheem hluav taws xob muaj feem xyuam rau lub hnub ci hluav taws xob.
(2) PV cov tswv yim terminal yog thim rov qab. Lub PVs davhlau ya nyob twg muaj ob tug ncej, zoo thiab tsis zoo, thiab lawv yuav tsum sib haum. Lawv tsis tuaj yeem txuas nrog hauv qab nrog lwm pab pawg.
(3) DC hloov tsis kaw.
(4) Thaum ib txoj hlua txuas nrog rau kev ua ntu zus, ib qho ntawm cov txuas txuas tsis txuas nrog.
(5) Muaj ib lub luv luv ntawm lub ntsej muag hauv cov qauv, ua rau tsis muaj lwm txoj hlua ua haujlwm.
Kev daws:
Ntsuas cov DC cov tswv yim voltage ntawm cov inverter nrog lub voltage ntau ntawm multimeter. Thaum lub voltage yog li qub, tag nrho cov hluav taws xob yog qhov suav ntawm qhov hluav taws xob ntawm txhua qhov sib xyaw. Yog tias tsis muaj voltage, tom qab ntawd tshawb xyuas DC hloov, davhlau ya nyob twg, cable txuas, thiab cov khoom siv hauv kev txiav txim; Yog tias muaj ntau cov tib yam, cais cov kev xeem nkag.
Yog tias cov inverter yog siv rau lub sijhawm thiab tsis muaj sab nraud ua rau pom, cov khoom siv inverter hauv Cirverts yog faulty. Hu rau tus neeg tsim khoom siv tom qab-muag.
2. Lub inverter tsis txuas nrog lub network
Kev soj ntsuam tsis ua tiav:
Tsis muaj kev sib txuas ntawm inverter thiab kab sib chaws.
Ua tau rau:
(1) AC hloov tsis tau kaw.
(2) Cov qauv zis tawm davhlau ya nyob twg ntawm cov inverter tsis txuas nrog.
(3) Thaum cov xaim, lub davhlau ya nyob sab saud ntawm cov inverter tso zis davhlau ya nyob davhlau npe yog loosened.
Kev daws:
Ntsuas cov ac tawm hluav taws xob voltage ntawm lub inverter nrog lub voltage ntau ntawm multimeter. Nyob rau hauv ib txwm mob, cov zis tawm tsam yuav tsum muaj 220V lossis 380v voltage. Yog tias tsis yog, kuaj yog tias qhov chaw sib txuas yog xoob, yog tias AC hloov raug kaw, thiab yog tias nqus tau kev tiv thaiv.
3. Inverter PV Overvoltage
Kev soj ntsuam tsis ua tiav:
DC voltage dhau lub tswb siab.
Ua tau rau:
Ntau dhau ntawm cov khoom siv hauv koob ua rau cov voltage kom ntau tshaj qhov kev txwv voltage ntawm cov inverter.
Kev daws:
Vim hais tias ntawm cov yam kub thiab txias ntawm cov cheebtsam, qhov ntsuas kub qis dua, qhov ntau dua qhov hluav taws xob. Lub tswv yim voltage ntau ntawm ib leeg-theem hlua inverter yog 50-600V, thiab cov hlua dav dav voltage yog nyob nruab nrab ntawm 350-400. Lub tswv yim voltage ntau ntawm peb-theem hlua inverter yog 200-1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,000 Post-voltage ntau yog nruab nrab ntawm 550-700V. Hauv qhov kev nthuav dav no, kev ua tau zoo ntawm Inverter yog qhov tseem ceeb. Thaum lub hluav taws xob muaj tsawg thaum sawv ntxov thiab yav tsaus ntuj, nws tuaj yeem tsim hluav taws xob, tab sis nws tsis ua rau lub voltage ntau tshaj li cov inverter voltage, ua rau lub tswb thiab nres.
4. Inverter rwb thaiv tsev ua txhaum
Kev soj ntsuam tsis ua tiav:
Lub rwb thaiv tsev tsis kam ntawm photovoltaic mus rau av yog tsawg dua 2 MEOGOHMS.
Ua tau rau:
Hnub ci teeb tsa, cov thawv sib tshuam, DC cable, inverters, ac cab tau, wireing lub termuit rau hauv av lossis kev puas tsuaj rau cov txheej txheem rwb thaiv tsev. Lub PV kev txiav tawm thiab AC wiring tsev yog xoob, ua rau hauv dej ingress.
Kev daws:
Disconnect daim phiaj, inverter, xyuas cov tsis kam ntawm txhua qhov sib txuas ua rau hauv av hauv tig, nrhiav cov ntsiab lus teeb meem, thiab hloov.
5. Daim phiaj ua yuam kev
Kev soj ntsuam tsis ua tiav:
Daim phiaj volt voltage thiab ntau zaus dhau tsawg dhau los yog siab heev.
Ua tau rau:
Hauv qee thaj chaw, cov network nyob deb nroog tsis tau tsim dua tshiab thiab cov kev sib tw voltage tsis nyob hauv qhov kev tswj hwm kev nyab xeeb.
Kev daws:
Siv ib tug loj sib piv kev ntsuas cov grid voltage thiab ntau zaus, yog tias nws tawm ntawm kev tos tus kab sib chaws rov qab los li qub. Yog tias lub hwj chim sib tshooj yog qhov qub, nws yog qhov inverter uas kuaj pom qhov tsis ua haujlwm ntawm Circuit Board. Disconnect tag nrho DC thiab AC Terminals ntawm lub tshuab thiab cia cov inverter tawm rau li 5 feeb. Kaw lub hwj huam mov. Yog tias nws tuaj yeem rov pib dua, yog tias nws tsis tuaj yeem rov qab los, tiv tauj. Tom qab-muag cov kws txawj ntse.