Indasitiri yePV ine chirevo: 2018 ndiro gore rokutanga rekuparadzirwa kwe photovoltaic power plant. Uyu mutongo wakasimbiswa mumunda we photovoltaic photovoltaic box 2018 Nanjing yakagovera photovoltaic teknolojia yekudzidzira kosi! Vagadziri uye vagovani munyika yese vakaungana muNanjing kuti vadzidze zvine hungwaru ruzivo rweakaparadzirwa photovoltaic power plant kuvaka.
Sezvo inyanzvi mumunda we photovoltaic inverters, Renac yakagara yakatsaurirwa kune photovoltaic science. Panzvimbo yekudzidzira yeNanjing, Renac Technical Service Maneja akakokwa kuti agoverane kusarudzwa kwemainverters uye masevhisi akangwara. Mushure mekirasi, vadzidzi vakabatsirwa kuongorora zvinetso zvakajairika zvezviteshi zvemagetsi zvephotovoltaic uye vakagamuchira rumbidzo inobvumirana kubva kuvadzidzi.
Mazano:
1. Iyo inverter skrini haina kuratidzwa
Kutadza kuongorora:
Pasina kupinza kweDC, inverter LCD inofambiswa neDC.
Zvikonzero Zvingangoitika:
(1) Iyo voltage yechikamu haina kukwana, iyo yekuisa voltage yakaderera pane yekutanga voltage, uye inverter haishande. Component voltage ine chekuita nemwaranzi yezuva.
(2) Iyo PV yekuisa terminal inodzoserwa kumashure. Iyo PV terminal ine mapango maviri, akanaka uye asina kunaka, uye anofanirwa kuenderana. Izvo hazvigone kubatanidzwa mune reverse nemamwe mapoka.
(3) Iyo DC switch haina kuvharwa.
(4) Kana tambo yabatanidzwa mukufanana, imwe yezvibatanidza haina kubatana.
(5) Pane dunhu pfupi mumodule, zvichiita kuti pasave nedzimwe tambo kushanda.
Solution:
Pima iyo DC yekupinda voltage yeiyo inverter neiyo voltage renji ye multimeter. Kana iyo voltage iri yakajairika, iyo yakazara voltage ndiyo huwandu hwevoltage yechikamu chimwe nechimwe. Kana pasina voltage, wobva waongorora iyo DC switch, terminal block, cable connector, uye zvikamu zvakarongeka; kana paine zvikamu zvakawanda, patsanura bvunzo yekupinda.
Kana iyo inverter yakashandiswa kwenguva yakati uye pasina chikonzero chekunze chinowanikwa, inverter hardware circuit yakashata. Bata mushure mekutengesa tekinoroji injiniya.
2. Iyo inverter haina kubatana kune network
Kutadza kuongorora:
Iko hakuna kubatana pakati pe inverter uye grid.
Zvikonzero Zvingangoitika:
(1) Iyo AC switch haina kuvharwa.
(2) Iyo AC inobuda terminal ye inverter haina kubatana.
(3) Kana wiring, iyo yepamusoro terminal ye inverter inobuda terminal inosunungurwa.
Solution:
Pima iyo AC inobuda voltage yeiyo inverter ine voltage renji ye multimeter. Mumamiriro ezvinhu akajairwa, chinobuda chinobuda chinofanira kunge chine 220V kana 380V voltage. Kana zvisiri, tarisa kana iyo yekubatanidza terminal yakasununguka, kana iyo AC switch yakavharwa, uye kana iyo leakage yekudzivirira switch yakabviswa.
3. Inverter PV Overvoltage
Kutadza kuongorora:
DC voltage yakawandisa alarm.
Zvikonzero Zvingangoitika:
Yakawandisa nhamba yezvikamu munhevedzano inoita kuti voltage ipfuure iyo yekuisa voltage muganho weiyo inverter.
Solution:
Nekuda kwehunhu hwetembiricha yezvikamu, kuderera kwekushisa, kunowedzera voltage. Iyo yekupinza voltage renji yeimwe-chikamu tambo inverter ndeye 50-600V, uye yakarongwa tambo voltage renji iri pakati pe350-400. Iyo yekupinza voltage renji yetatu-phase tambo inverter ndeye 200-1000V. Iyo post-voltage range iri pakati pe550-700V. Mune iyi voltage renji, kushanda kweiyo inverter kwakakwira. Kana mwaranzi yakadzikira mangwanani uye manheru, inogona kugadzira magetsi, asi haikonzeri kuti voltage ipfuure muganho wepamusoro weiyo inverter voltage, zvichikonzera alarm uye kumira.
4. Inverter insulation kukanganisa
Kutadza kuongorora:
Kudzivirira kwekudzivirira kwe photovoltaic system kusvika pasi pasi pasi pe2 megohms.
Zvikonzero Zvingangoitika:
Solar modules, junction mabhokisi, DC tambo, inverters, AC tambo, wiring terminals, nezvimwewo, ine pfupi pfupi kutenderera pasi kana kukuvadzwa kune insulation layer. Iyo PV terminals uye AC wiring imba yakasununguka, zvichiita kuti mvura ingress.
Solution:
Bvisa grid, inverter, tarisa kupokana kwechimwe nechimwe chikamu pasi zvakare, tsvaga matambudziko mapoinzi, uye wotsiva.
5. Grid kukanganisa
Kutadza kuongorora:
Iyo grid voltage uye frequency zvakaderera kana zvakanyanyisa.
Zvikonzero Zvingangoitika:
Mune dzimwe nzvimbo, network yekumaruwa haina kuvakwa patsva uye grid voltage haisi mukati mechikamu chemitemo yekuchengetedza.
Solution:
Shandisa multimeter kuyera iyo grid voltage uye frequency, kana iri kunze kwekumirira kuti grid idzokere kune yakajairika. Kana iyo grid yemagetsi yakajairika, ndiyo inverter inoona kukundikana kwebhodhi redunhu. Bvisa zvese DC uye AC zviteshi zvemuchina uye rega inverter ibude kweanenge maminetsi mashanu. Vhara magetsi. Kana iyo inogona kutangwazve, kana isingakwanisi kudzorerwa, taura. Mushure mekutengesa tekinoroji injiniya.