Masana'antar PV tana da wata magana: 2018 ita ce shekarar farko ta rarraba wutar lantarki ta photovoltaic. An tabbatar da wannan jumla a cikin filin hoto na hoto na hoto na 2018 Nanjing ya rarraba horon fasaha na fasaha! Masu sakawa da masu rarrabawa a duk faɗin ƙasar sun taru a Nanjing don su koyi ilimin da aka rarraba ta hanyar samar da wutar lantarki.
A matsayin ƙwararre a fagen inverters na photovoltaic, Renac koyaushe an sadaukar da shi ga kimiyyar hoto. A wurin horarwa na Nanjing, an gayyaci Manajan Sabis na Fasaha na Renac don raba zaɓi na inverters da sabis na hankali. Bayan darasi, an taimaka wa ɗalibai don nazarin matsalolin gama gari na tashoshin wutar lantarki na photovoltaic kuma sun sami yabo gaba ɗaya daga ɗaliban.
Nasihu:
1. Ba a nuna allon inverter ba
Binciken gazawa:
Ba tare da shigar da DC ba, LCD na inverter yana aiki da DC.
Dalilai masu yiwuwa:
(1) Wutar lantarki na bangaren bai isa ba, ƙarfin shigarwar yana ƙasa da ƙarfin farawa, kuma inverter baya aiki. Wutar lantarki yana da alaƙa da hasken rana.
(2) An juya tashar shigarwar PV. Tashar PV tana da sanduna biyu, tabbatacce da korau, kuma dole ne su dace da juna. Ba za a iya haɗa su da sauran ƙungiyoyi ba.
(3) Ba a rufe maɓallin DC.
(4) Lokacin da aka haɗa kirtani a layi daya, ɗaya daga cikin masu haɗawa ba ya haɗa.
(5) Akwai gajeriyar da'ira a cikin tsarin, wanda ke haifar da babu sauran kirtani don aiki.
Magani:
Auna ƙarfin shigarwar DC na inverter tare da kewayon ƙarfin lantarki na multimeter. Lokacin da ƙarfin lantarki ya kasance na al'ada, jimlar ƙarfin lantarki shine jimlar ƙarfin kowane bangare. Idan babu irin ƙarfin lantarki, to duba DC canji, m block, na USB connector, da kuma aka gyara a cikin tsari; idan akwai abubuwa da yawa, samun damar gwaji daban.
Idan an yi amfani da inverter na ɗan lokaci kuma ba a sami wani dalili na waje ba, da'irar kayan aikin inverter ba ta da kyau. Tuntuɓi injiniyan fasaha bayan-tallace-tallace.
2. Ba a haɗa mai inverter zuwa cibiyar sadarwa ba
Binciken gazawa:
Babu haɗi tsakanin inverter da grid.
Dalilai masu yiwuwa:
(1) Ba a rufe wutar AC.
(2) Ba a haɗa tashar fitarwa ta AC na inverter.
(3) Lokacin da ake yin wayoyi, ana sassauta babban ƙarshen tashar fitarwa ta inverter.
Magani:
Auna ƙarfin fitarwa na AC na inverter tare da kewayon ƙarfin lantarki na multimeter. A karkashin yanayi na al'ada, tashar fitarwa yakamata ta sami ƙarfin lantarki na 220V ko 380V. Idan ba haka ba, duba idan tashar haɗin yanar gizon ta sako-sako, idan an rufe maɓallin AC, da kuma idan an katse maɓallin kariya daga ɗigogi.
3. Inverter PV Overvoltage
Binciken gazawa:
Ƙararrawar wutar lantarki ta DC yayi girma sosai.
Dalilai masu yiwuwa:
Yawan adadin abubuwan da ke cikin jeri yana sa wutar lantarki ta wuce iyakar shigar da wutar lantarki na inverter.
Magani:
Saboda halayen zafin jiki na abubuwan da aka gyara, ƙananan zafin jiki, mafi girman ƙarfin lantarki. Matsakaicin ƙarfin shigar da igiyoyin inverter-lokaci ɗaya shine 50-600V, kuma kewayon wutar lantarki da ake samarwa shine tsakanin 350-400. Wurin shigar da wutar lantarki na igiyar inverter mai hawa uku shine 200-1000V. Matsakaicin ƙarfin wutar lantarki tsakanin 550-700V. A cikin wannan kewayon ƙarfin lantarki, ingancin inverter yana da girma. Lokacin da radiation ya yi ƙasa da safe da maraice, yana iya samar da wutar lantarki, amma ba ya sa wutar lantarki ta wuce iyakar girman wutar lantarki, yana haifar da ƙararrawa da tsayawa.
4. Laifin inverter insulation
Binciken gazawa:
Juriya na kariya na tsarin photovoltaic zuwa ƙasa bai wuce 2 megohms ba.
Dalilai masu yiwuwa:
Samfuran hasken rana, akwatunan junction, igiyoyin DC, inverters, igiyoyin AC, igiyoyin waya, da dai sauransu, suna da ɗan gajeren da'ira zuwa ƙasa ko lalata rufin rufin. Tashoshin PV da gidajen wayoyi na AC sun kwance, yana haifar da shigar ruwa.
Magani:
Cire haɗin grid, inverter, duba juriya na kowane sashi zuwa ƙasa bi da bi, gano wuraren matsalar, kuma maye gurbin.
5. Kuskuren Grid
Binciken gazawa:
Wutar lantarki da mitar grid sun yi ƙasa sosai ko kuma sun yi girma sosai.
Dalilai masu yiwuwa:
A wasu wurare, ba a sake gina hanyar sadarwar karkara ba kuma wutar lantarki ba ta cikin iyakokin ƙa'idodin aminci.
Magani:
Yi amfani da multimeter don auna wutar lantarki da mitar grid, idan ba a jira grid ɗin ya dawo daidai ba. Idan grid ɗin wutar lantarki ta al'ada ce, injin inverter ne ke gano gazawar allon kewayawa. Cire haɗin duk tashoshin DC da AC na na'ura kuma bari inverter ya saki kusan mintuna 5. Rufe wutar lantarki. Idan za a iya ci gaba, idan ba za a iya dawo da shi ba, tuntuɓi. Injiniyan fasaha bayan-tallace-tallace.