Nekukurumidza kukura kweiyo photovoltaic industry, kuiswa kwesimba kuri kuwedzera.Mune dzimwe nzvimbo, huwandu hwakaiswa hwakazadzwa, uye ichangobva kuiswa solar masisitimu haakwanise kutengesa magetsi pamhepo.Makambani egridi arikuda kuti grid-yakabatanaPV masisitimukuvakwa mune ramangwana kuve backflow-proof magetsi ekugadzira masisitimu.
Chii chinonzi Counterflow?
Chii chinonzi reverse current?Mune PV system, simba remagetsi rinowanzo kuendeswa kubva kune grid kusvika kumutoro, iyo inonzi mberi ikozvino.Kana chirongwa chePV chichiiswa, kana simba rePV system rakakura kudarika simba remutoro wemunharaunda, simba risina kushandiswa rinotumirwa kune gridhi.Sezvo kutungamira kwezvino kupesana neiyo yemazuva ese, iyi inonzi 'reverse current'.Mune grid-yakabatana-mamita maviri-mamita, simba remberi ndiro simba rinounzwa kubva kune grid kusvika kune mutoro, uye reverse simba ndiro simba rinobudiswa kubva kuPV system kusvika kune grid.A backfeed PV system inoreva kuti simba rinogadzirwa nePV rinogona kushandiswa chete nemitoro yemunharaunda uye haigone kutumirwa kune grid.
Kana iyo PV inverter ichishandura maDC mapoinzi anogadzirwa nePV modules kuita AC simba, pane DC zvikamu uye harmonics, matatu-chikamu ikozvino kusaenzana uye kusava nechokwadi mune inobuda simba.Kana simba rakagadzirwa richiiswa mugedhi yeruzhinji, rinokonzeresa kusvibiswa kweharmonic kune grid, izvo zvinogona kuita kuti grid voltage iite kushanduka uye kufenda.Kana paine akawanda akadai emagetsi ekugadzira magetsi achidyisa simba mukati megridi, kunaka kwesimba regridhi kuchaderedzwa zvakanyanya.Naizvozvo, iyi mhando ye photovoltaic simba rekugadzira system inofanirwa kuve yakashongedzerwa neazvino ekudzivirira ekudzivirira kudzivirira kuitika kweiyo reverse ikozvino.
Kudzokera shure kungadziviswa sei?
Anti-reverseikozvino kushanda musimboti: Isa ananti-reversemita yazvino kana sensor yazvino pane grid yekubatanidza nzvimbo.Kana ichinge yaona kuyerera kwazvino kune grid, inotumira chiratidzo kune inverter kuburikidza ne485 kutaurirana, uye inverter inoderedza simba rekubuda kusvika reverse yakabuda ikozvino zero.Izvi zvinozivaanti-reverseikozvino basa.Zvinoenderana neakasiyana voltage mazinga eiyo system, iyo PV system inogona kukamurwa kuita imwechete-chikamuanti-reverseyazvino system uye matatu-phaseanti-reverseikozvino system.
Nzira yekusarudza ananti-reverseikozvino smart mita?
Kana iyo PV kugadzirwa kwemagetsi yakakura kupfuura kudiwa kwemutoro, reverse simba rinogadzirwa.Isu tinoda mita yekuona uye kuona iyo inoshanda simba kubuda kweiyo inverter, uye ipapo mita inotumira chiratidzo kuburikidza neRS485 kutaurirana kuti ibatane neinverter data kuti igadzirise simba rekubuda reiyo inverter kuenzanisa simba rekubuda uye simba remagetsi.
Kurongeka: Sarudza mita yakangwara inoyera nemashandisirwo akanaka uye asina kunaka magetsi.Inofanirwa kuve yakanyatso kurongeka kuti ive nechokwadi chechokwadi chekubhadhara uye chekutarisa.
Kugarisana: Tarisa kuti smart mita inoenderana neyako magetsi system uye zvekushandisa zvinodiwa.Inofanirwa kushanda zvisina mutsetse neyako iripo zvivakwa uye kukwanisa kubatana kune yekushandisa's metering system.
Nhaurirano maprotocol: Ita shuwa kuti smart mita inotsigira maprotocol ekutaurirana anoenderana netiweki yekushandisa.Mitemo yakajairika ndeye Modbus, DLMS/COSEM uye Zigbee.
Kutonga kwedata: Funga nezve kugona kwe data remamita akangwara.Inofanirwa kunge iine nzvimbo yekuchengetera yakakwana uye kugona kuendesa data kune yepakati sisitimu yekubhadharisa uye kuongororwa.Tsvaga mamita anopa data encryption uye yakachengeteka kutapurirana.
Nguva yekutumira: Sep-08-2023