1. Chifukwa
N'chifukwa chiyani inverter imachitika overvoltage tripping kapena kuchepetsa mphamvu kumachitika?
Ikhoza kukhala chimodzi mwazifukwa izi:
1)Gridi yanu yakwanuko ikugwira ntchito kale kunja kwa malire a Standard voltage yapafupi (kapena makonda olakwika).Mwachitsanzo, ku Australia, AS 60038 imatchula 230 volts ngati mphamvu yamagetsi yamagetsi yokhala ndi a.+ 10%, -6% osiyanasiyana, kotero malire apamwamba a 253V.Ngati ndi choncho ndiye kuti kampani yanu ya Grid ili ndi udindo wokonza magetsi.Nthawi zambiri posintha transformer yakomweko.
2)Gridi yanu yakumaloko yatsala pang'ono kutha ndipo makina anu oyendera dzuwa, ngakhale adayikidwa bwino komanso malinga ndi miyezo yonse, amakankhira gululi wakumaloko mopitilira malire.Malo opangira ma solar inverter anu amalumikizidwa ndi 'Connection Point' yokhala ndi gridi ndi chingwe.Chingwechi chimakhala ndi mphamvu yamagetsi yomwe imapanga magetsi kudutsa chingwe nthawi iliyonse inverter ikatumiza mphamvu potumiza magetsi mu gridi.Izi timazitcha 'kukwera kwamagetsi'.Mukatumiza ma sola anu kumayiko ena, mphamvu yamagetsi imakwera chifukwa cha Ohm's Law (V=IR), komanso kukana kwa ma cabling kumakwera kwambiri.
Mwachitsanzo, ku Australia, Australian Standard 4777.1 ikunena kuti kukwera kwamphamvu kwambiri pakuyika kwa solar kuyenera kukhala 2% (4.6V).
Chifukwa chake mutha kukhala ndi kukhazikitsa komwe kumakwaniritsa mulingo uwu, ndipo kumakhala ndi kukwera kwamagetsi kwa 4V pakutumiza kunja kwathunthu.Gridi yanu yakumaloko ikhozanso kukumana ndi muyezo ndikukhala pa 252V.
Patsiku labwino la dzuwa pomwe palibe amene ali kunyumba, makinawa amatumiza pafupifupi chilichonse ku gridi.Magetsi amakankhidwa mpaka 252V + 4V = 256V kwa mphindi zopitilira 10 ndipo inverter imayenda.
3)Kukwera kwambiri kwamagetsi pakati pa inverter ya solar ndi gridi kuli pamwamba pa t 2% pamlingo wa Standard,chifukwa kukana kwa chingwe (kuphatikiza kugwirizana kulikonse) ndikokwera kwambiri.Ngati ndi choncho ndiye kuti woyikirayo akuyenera kukulangizani kuti AC cabling yanu ku gridi ikufunika kukwezedwa musanayikedwe ndi dzuwa.
4) Inverter hardware nkhani.
Ngati kuyeza Grid voteji nthawi zonse mkati osiyanasiyana, koma inverter nthawi zonse ali overvoltage Tripping cholakwika kaya lonse voteji osiyanasiyana ndi, ayenera hardware nkhani ya inverter, mwina IGBTs kuonongeka.
2. Matenda
Yesani Magetsi a Gridi Yanu Kuti muyese mphamvu yamagetsi ya gridi yanu, iyenera kuyezedwa pomwe solar yanu yazimitsidwa.Kupanda kutero mphamvu yamagetsi yomwe mumayesa idzakhudzidwa ndi dongosolo lanu ladzuwa, ndipo simungayimbe mlandu pa gridi!Muyenera kutsimikizira kuti magetsi a gridi ndi okwera popanda makina anu oyendera dzuwa.Muyeneranso kuzimitsa katundu wamkulu m'nyumba mwanu.
Iyeneranso kuyesedwa pa tsiku ladzuwa masana - chifukwa izi zidzaganizira kukwera kwa magetsi komwe kumachitika chifukwa cha magetsi ena omwe akuzungulirani.
Choyamba - lembani kuwerenga nthawi yomweyo ndi multimeter.Sparky yanu iyenera kuwerengera mphamvu nthawi yomweyo pa switchboard yayikulu.Ngati voteji ndi yayikulu kuposa voteji yocheperako, ndiye tengani chithunzi cha multimeter (makamaka ndi cholumikizira chachikulu cha sola pamalo ozimitsa pachithunzi chomwechi) ndikuchitumiza ku dipatimenti yamagetsi yakampani yanu ya Grid.
Kachiwiri - lembani avareji ya mphindi 10 ndi chojambulira magetsi.Sparky yanu imafunika chojambulira magetsi (ie Fluke VR1710) ndipo ikuyenera kuyeza nsonga zapakati pa mphindi 10 ndikuzimitsa katundu wanu wadzuwa ndi zazikulu.Ngati avareji ili pamwamba pa voteji yocheperako ndiye tumizani deta yojambulidwa ndi chithunzi cha khwekhwe la muyeso - kachiwiri makamaka kuwonetsa chosinthira chachikulu cha solar chozimitsa.
Ngati mayeso awiri omwe ali pamwambawa ali 'abwino' ndiye kakamizani kampani yanu ya Grid kuti ikonze ma voltages akudera lanu.
Tsimikizirani kutsika kwamagetsi pakuyika kwanu
Ngati mawerengedwe akuwonetsa kukwera kwamagetsi kuposa 2% ndiye kuti muyenera kukweza ma AC cabling kuchokera ku inverter yanu kupita ku grid Connection Point kuti mawaya azinenepa (mawaya onenepa = kutsika kochepa).
Gawo Lomaliza - yesani kukwera kwamagetsi
1. Ngati mphamvu ya gridi yanu ili bwino ndipo mawerengedwe a kukwera kwa magetsi ndi ochepera 2% ndiye kuti sparky wanu ayenera kuyeza vutolo kuti atsimikizire kuwerengera kukwera kwa voteji:
2. Ndi PV yozimitsa, ndi ma circuits ena onse azimitsidwa, yesani voteji yopanda katundu pa switch yayikulu.
3. Ikani chinthu chimodzi chodziwikiratu, mwachitsanzo chotenthetsera kapena uvuni/mahotplates ndi kuyeza kukoka komwe kulipo pamagetsi, osalowerera ndale ndi nthaka komanso mphamvu yamagetsi yamagetsi pa switch yayikulu.
4. Kuchokera apa mutha kuwerengera kutsika kwamagetsi / kukwera kwa ogula omwe akubwera ndi main service.
5. Werengetsani mzere wa AC kukana kudzera pa Lamulo la Ohm kuti mutenge zinthu monga zolumikizira zoyipa kapena zosalowerera ndale.
3. Mapeto
Masitepe Otsatira
Tsopano muyenera kudziwa vuto lanu.
Ngati ndivuto #1- magetsi a gridi okwera kwambiri- ndiye kuti ndiye vuto la kampani yanu ya Grid.Mukawatumizira umboni wonse womwe ndanena kuti akuyenera kukonza.
Ngati ndivuto #2- Gridi ili bwino, kukwera kwamagetsi ndikochepera 2%, koma imayendabe ndiye zomwe mungasankhe ndi:
1. Kutengera kampani yanu ya Gridi mutha kuloledwa kusintha inverter 10 miniti avareji malire aulendo wamagetsi kukhala mtengo wololedwa (kapena ngati muli ndi mwayi wokwera kwambiri).Pezani sparky yanu kuti muwone ku Grid Company ngati mukuloledwa kuchita izi.
2. Ngati inverter yanu ili ndi "Volt / Var" mode (ambiri amakono amatero) - ndiye funsani oyika anu kuti alowetse njirayi ndi mfundo zomwe zikulimbikitsidwa ndi kampani yanu ya Grid - izi zikhoza kuchepetsa kuchuluka ndi kuopsa kwa kukwera kwamagetsi.
3. Ngati sizingatheke ndiye, ngati muli ndi gawo la 3, kupititsa patsogolo ku 3 gawo inverter nthawi zambiri kumathetsa vutoli - monga kuwonjezeka kwamagetsi kumafalikira pazigawo za 3.
4. Kupanda kutero mukuyang'ana kukweza zingwe zanu za AC ku gridi kapena kuchepetsa mphamvu yotumiza kunja kwa solar system yanu.
Ngati ndivuto #3- max voltage kukwera kupitilira 2% - ndiye ngati ndikuyika kwaposachedwa kumawoneka ngati oyika anu sanayike dongosololi ku Standard.Muyenera kukambirana nawo ndikupeza njira yothetsera vutoli.Zingaphatikizepo kukweza ma AC cabling ku gridi (gwiritsani ntchito mawaya amafuta kapena kufupikitsa chingwe pakati pa inverter ndi malo olumikizirana ndi Gridi).
Ngati ndivuto #4- Vuto la inverter hardware.Imbani thandizo laukadaulo kuti muthe kusintha.