Sezvo varidzi vepurazi rezuva vanoyedza kusimudzira mashandiro uye kugona kwemabasa avo, DC wiring sarudzo haigone kufuratirwa.Kutevera kududzirwa kwemaitiro eIEC uye tichifunga nezvezvinhu zvakadai sekuchengetedza, kaviri-mativi kuwana, tambo yekutakura tambo, kurasikirwa kwetambo uye kudonha kwemagetsi, varidzi vezvirimwa vanogona kuona tambo yakakodzera kuti ive yakachengeteka uye yakagadzikana kushanda mukati mehupenyu hwese hwephotovoltaic. system.
Kuita kwema solar modules mumunda kunokanganiswa zvakanyanya nemamiriro ekunze.Iyo pfupi yedunhu ikozvino paPV module data sheet yakavakirwa payakajairwa bvunzo mamiriro anosanganisira irradiance ye1kw / m2, spectral air quality ye1.5, uye sero tembiricha ye25 c.Data sheet ikozvino zvakare haina kurangarira kumashure kwepamusoro ikozvino kwemaviri-sided modules, saka gore rekusimudzira uye zvimwe zvinhu;Tembiricha;Peak irradiance;Iyo yekumashure yepamusoro overirradiance inofambiswa nealbedo inobata zvakanyanya iyo chaiyo pfupi yedunhu ikozvino ye photovoltaic modules.
Kusarudza tambo sarudzo dzePV mapurojekiti, kunyanya maviri-mativi mapurojekiti, anosanganisira kufunga akawanda akasiyana.
Sarudza tambo yakakodzera
Dc tambo ndiwo hupenyu hwePV masisitimu nekuti anobatanidza mamodule kubhokisi regungano uye inverter.
Muridzi wechirimwa anofanirwa kuve nechokwadi chekuti saizi yetambo yakanyatso kusarudzwa zvichienderana neyazvino uye voltage yeiyo photovoltaic system.Matambo anoshandiswa kubatanidza chikamu cheDC chegridi-yakabatana PV masisitimu anodawo kushingirira kunyanyisa kwezvakatipoteredza, voltage uye mamiriro azvino.Izvi zvinosanganisira kupisa mhedzisiro yeazvino uye solar kuwana, kunyanya kana yakaiswa padhuze nemodule.
Heano mamwe makuru ekufunga.
Settlement wiring design
MuPV system dhizaini, kutariswa kwemutengo wenguva pfupi kunogona kutungamira mukusarudzika kwemidziyo uye kutungamirira kukuchengetedza kwenguva refu uye nyaya dzekuita, kusanganisira mhedzisiro yakaipa semoto.Zvinhu zvinotevera zvinoda kunyatsoongororwa kuti zvienderane nekuchengetedzwa kwenyika nemhando dzemhando:
Voltage inodonhedza miganho: Iko kurasikirwa kwesolar PV tambo kunofanirwa kuve kushoma, kusanganisira iyo DC kurasikirwa mune solar panel tambo uye iyo AC kurasikirwa mune inverter inobuda.Imwe nzira yekumisa kurasikirwa uku kudzikisa kudonha kwevoltage mutambo.Iyo DC voltage inodonha inofanirwa kunge iri pasi pe1% uye isingapfuure 2%.High DC voltage inodonha inowedzerawo kuparadzirwa kwevoltage yePV tambo dzakabatana kune imwecheteyo yakanyanya simba point tracking (MPPT) system, zvichikonzera kurasikirwa kwakanyanya.
Kurasikirwa netambo: Kuti uve nechokwadi chekubuda kwesimba, zvinokurudzirwa kuti kurasikirwa kwetambo kweyese yakaderera-voltage tambo (kubva module kuenda kune transformer) kusapfuure 2%, zvakanaka 1.5%.
Ikozvino-yekutakura simba: Derating zvinhu zvetambo, senge tambo yekuisa nzira, tembiricha yekukwira, kureba, uye huwandu hwetambo dzakafanana, zvinoderedza iko-yekutakura kugona kwetambo.
Kaviri-mativi IEC chiyero
Miyero yakakosha kuve nechokwadi chekuvimbika, kuchengetedzwa uye kunaka kwe photovoltaic system, kusanganisira wiring.Pasi rose, kune akati wandei anogamuchirwa mwero wekushandiswa kwetambo dzeDC.Iyo yakanyanya kuwanda seti ndeye IEC chiyero.
IEC 62548 inoisa dhizaini yezvinodiwa zvephotovoltaic arrays, kusanganisira DC array wiring, magetsi ekudzivirira emagetsi, switch uye pasi zvinodiwa.Iyo yazvino dhizaini yeIEC 62548 inotsanangura yazvino nzira yekuverenga yemamodule-mativi maviri.IEC 61215: 2021 Inodonongodza tsananguro uye kuyedza zvinodiwa kune maviri-sided photovoltaic modules.Iyo solar irradiance test mamiriro ezvikamu zviviri-mativi anounzwa.BNPI (mbiri-sided nameplate irradiance): Pamberi pePV module inogamuchira 1 kW / m2 solar irradiance, uye kumashure inogamuchira 135 W / m2;BSI (Double-sided stress irradiance), apo PV module inogamuchira 1 kW/m2 solar irradiance kumberi uye 300 W/m2 kumashure.
Overcurrent protection
Overcurrent dziviriro mudziyo unoshandiswa kudzivirira njodzi dzinogona kuitika dzinokonzerwa nekuremerwa, pfupi pfupi, kana kukanganisa kwepasi.Iwo anonyanya kuzivikanwa overcurrent ekudzivirira maturusi macircuit breaker uye fuse.
Iyo overcurrent kudzivirira mudziyo uchacheka dunhu kana reverse ikozvino inodarika kukosha kwazvino yekudzivirira, saka iyo yekumberi uye yekudzosera ikozvino inoyerera kuburikidza neDC tambo haizombove yakakwirira kupfuura yakayerwa ikozvino yechigadzirwa.Iyo inotakura simba yeDC tambo inofanirwa kuenzana neyakayerwa ikozvino yeiyo overcurrent kudzivirira mudziyo.
Nguva yekutumira: Zvita-22-2022