Zvishandiso zveDC neAC zvekudzivirira simba rezuva nePV
Ndakaona mapurojekiti akawanda ezuva achikundikana mushure medutu rimwe chete remheni, saka ndinovimba ne Chishandiso Chinodzivirira Kukwira kumisa kukuvara kusati kwasvika pamapaneru nema inverters.
A Chishandiso Chinodzivirira Kukwira yemagetsi ezuva nePV inodzivirira macircuit eDC neAC kubva kumagetsi emagetsi uye maswitching surges nekutsausa voltage yakawandisa pasi zvakachengeteka, zvichidzivirira kutadza kwemidziyo uye nguva yekudzima magetsi.
Kana uchida kugadzirwa kwakagadzikana, mari yekuchengetedza inofungidzirwa, uye hupenyu hurefu hwehurongwa, kunzwisisa mashandiro anoita DC neAC SPDs ndiyo danho rinotevera rine musoro.
Chii chinonzi Chishandiso cheDC Surge Chekudzivirira Masisitimu Ezuva
Ndinowanzo sangana nevatengi vasingatarisi DC surges, kusvika chimwe chiitiko chaparadza inverter. Ndosaka ndichitanga neDC protection.
Mudziyo wekudzivirira kubuda kwemagetsi weDC muma solar systems unoderedza kubuda kwemagetsi kwenguva pfupi pama DC circuits nekusunga ma surges nekuaburitsa pasi, zvichidzivirira ma PV panels, tambo, uye inverters.
Ndinogadzira dziviriro yeDC nepfungwa imwe chete iri nyore: maPV arrays marefu, anobuda pachena. Anoita semaantenna panguva yezviitiko zvemheni. Kunyangwe mheni isina kunanga inogona kukonzera zviuru zvemavolts kuita tambo dzeDC. Chishandiso Chinodzivirira Kukwira Iyo yakaiswa pedyo nearray combiner kana inverter DC input inoshanda sevharuvhu yekuchengetedza inokurumidza kupindura. Haimisi mheni, asi inodzosera simba remhepo kubva kumagetsi anonzwa.
Mumapurojekiti chaiwo, ndinogara ndichitarisa zvinhu zvitatu zvinokosha. Chekutanga, voltage yepamusoro yeDC yearray mumamiriro ekutonhora. Chechipiri, mhando yegrounding. Chechitatu, kureba kwenzira yekufambisa tambo. DC SPDs dzinoshanda zvakanaka chete kana kudzivirira kwegrounding kwakaderera uye nzira dzetambo dziri pfupi. Izvi zvakakosha pakudzivirira surge kumafekitori nemasystem makuru edenga uko tambo dzinofamba kwenguva refu.
Kubva pane zvakaitika kwandiri, kutadza kwakawanda kunonzi kunokonzerwa ne "kusashanda zvakanaka kwe inverter" hakusipo kana kuti hakuna kukura zvakanaka kwe DC SPDs. SPD chaiyo yeindasitiri kudivi reDC inoderedza zvakanyanya mari yekutsiva uye yekusashanda.
Zvishandiso Zvinodzivirira zveDC Surge yePV neSolar Power
Ndinowanzo taurira vatariri vekutenga kuti DC SPDs hazvisi zvekungosarudza. Ndidzo zvinhu zvikuru zvekudzivirira.
Zvishandiso zveDC zvekudzivirira maPV nemasisitimu esimba rezuva chengetedza tambo dzeDC nemidziyo kubva kumafungu anokonzerwa nemheni uye kuchinjana kwezvinhu muzvigadziro zvekunze.
Pandinoronga dziviriro yeDC surge, ndinotanga ndatarisa marongerwo esystem. PV yedenga, ma arrays akaiswa pasi, uye ma utility-scale plants zvese zvinoita zvakasiyana panguva yezviitiko zve surge. Chishandiso Chinodzivirira Kukwira kuiswa mubhokisi reDC combiner kunoderedza kushushikana pamagetsi ari pasi. Mumasystem makuru, ndinowanzo shandisa dziviriro yakabatana neSPDs paarray ne inverter.
Pazasi pane kuenzanisa kunoshanda kwandinoshandisa pakusarudza DC SPDs:
| Saizi Yekushandisa | Chakajairika DC Voltage | Rudzi rweSPD runokurudzirwa | Nzvimbo yekuisa |
|---|---|---|---|
| Denga diki | ≤600V | Rudzi rwechipiri DC SPD | Inverter DC yekupinda |
| PV yekutengeserana | 800–1000V | Rudzi rwechipiri DC SPD | Bhokisi remusanganiswa weDC |
| Chiyero chekushandisa | 1000–1500V | Rudzi 1+2 DC SPD | Musanganiswa wemunda |
Maitiro aya anoshanda zvakanaka kumapurojekiti eSPD emaindasitiri uko nguva yekushanda inokosha. Anoderedzawo gakava rewarandi nekuti kukuvara kwekuwedzera kwemagetsi kunoderedzwa zviri pachena.
Kutsanangurwa kweMagetsi eDhivhari eDhivhari eDC Surge Anodzivirira
Ndinogara ndichiyeuchidza vatengi kuti zvikanganiso zve voltage rating ndeimwe yezvikanganiso zvinodhura zvikuru mukudzivirira DC surge.
Kuyerwa kwemagetsi ekudzivirira emudziyo weDC kunofanira kudarika voltage yepamusoro yePV system open-circuit kudzivirira kutadza kushanda zvakanaka uye kurasikirwa nedziviriro.
Muchokwadi, handimbosarudzi DC SPD yakaenzana ne nominal voltage. Kupisa kunokanganisa voltage yePV zvakanyanya. Kutonhora kunogona kusundira tambo voltage pamusoro pe nameplate values. Ndosaka ndichida safety margin yeinenge 20%.
Heino maitiro andinowanzo enzanisa voltage ratings:
| DC Voltage Level | Nyaya Inoshandiswa Kazhinji | Kushandiswa kweSPD |
|---|---|---|
| 12V / 24V | Zvinodzora, masensa | Dziviriro yeDC yemuno |
| 48V | Kuchengetedza simba | Chimiro chebhatiri |
| 600V | MaPV madiki arrays | Masisitimu edenga |
| 1000V | PV yekutengeserana | Matenga makuru |
| 1500V | PV yemagetsi | Zvirimwa zvezuva |
Kushandisa chiyero chakakodzera kunowedzera hupenyu hweSPD uye kunoita kuti mashandiro akajairika agone kufungidzirwa. Izvi zvinokosha kune vatengi vakaita saJeff, vanoda mhando yakagadzikana uye mutengo wakaderera wekuva muridzi.
Kudzivirirwa kweDC Surge kwePV Panels neInverters
Ndinonyanya kutarisa pa inverter nekuti ndiyo inonyanya kudhura uye inonyanya kunzwa.
Dziviriro yeDC pakati pemapaneru ePV nema inverters inoderedza simba remagetsi risati rasvika pamagetsi e inverter, zvichidzivirira kukuvara kukuru uye kudzimwa kwesystem.
Kubva padata remumunda, kazhinji kutadza kweinverter kunoitika padanho reDC input. Tambo refu dzeDC dzinounganidza simba rekukwira kwemagetsi, uye pasina Chishandiso Chinodzivirira Kukwira, inverter inonwisa kurova. Ndinogara ndichiisa maDC SPDs pedyo nepamaterminal einverter.
Muma PV system emazuva ano anoshandisa 1000V kana kupfuura, dziviriro yakarongeka inokosha. SPD imwe chete pa array haikwani. Dziviriro yakarongwa inoderedza voltage yakasara uye inovandudza kuvimbika kwesystem. Iyi nzira inoshandiswa zvakanyanya mukudzivirira ma surge kumafekitori uko nguva yekushanda isingagamuchirwi.
Kugadziriswa kwePole kweDC Surge Protective Devices
Ndinowanzoona kuvhiringidzika pamusoro pematanda, kunyanya mumasystem ePV ari pasi pemvura kana ari pamusoro.
Kugadzika kwedanda rekudzivirira reDC surge kunoenderana nekugadzika kwesystem uye kurongeka kweconductor, zvichiita kuti nzira dzakanaka, dzisina kunaka, uye dzepasi dzidzivirirwe zvizere.
Kune akawanda masisitimu ePV, 2P DC SPDs dzakajairika. Dzinodzivirira mitsetse yakanaka neisina kunaka pasi. Mumasisitimu akaomarara, magadzirirwo e3P anogona kudiwa. Ndinogara ndichiongorora topology yekudzika pasi ndisati ndasarudza yekupedzisira. Kugadziriswa kwepole kusina kunaka kunoderedza kushanda kwekudzivirira uye kunowedzera njodzi yekukundikana.
Zvishandiso Zvinodzivirira zveAC Surge Inoshandiswa muSolar Systems
Ndinoona dziviriro yeAC senzira yechipiri yekudzivirira mushure medziviriro yeDC.
Midziyo yekudzivirira kukwira kwemagetsi eAC inodzivirira ma inverter, mabhodhi ekuparadzira, uye mitoro kubva kuma surges anopinda nepakati pemagetsi kana zviitiko zvekuchinja kwemukati.
MaAC SPD anosarudzwa zvichienderana nemagetsi uye magadzirirwo echikamu. Masisitimu ekugara anowanzo shandisa ma110V kana 275V SPDs, nepo masisitimu eindasitiri achishandisa 385V zvishandiso. Kune masisitimu ane zvikamu zvitatu, magadzirirwo e3P+NPE anopa dziviriro yakaringana.
| Rudzi rweSisitimu yeAC | Voltage | Kugadziriswa kweSPD |
|---|---|---|
| Pekugara | 110V | 1P kana 1P+N |
| Zvekutengeserana | 275V | 2P |
| Maindasitiri | 385V | 3P+NPE |
SPD yemuindasitiri kudivi reAC inodzivirira kwete chete michina yezuva asiwo mitoro yakabatana.
Maitiro Ekusarudza Chishandiso Chekudzivirira Kurudyi yezuva
Ndinochengeta sarudzo iri nyore nekuti kuwanda kwezvinhu kunokonzera zvikanganiso.
Kusarudza mudziyo unodzivirira kukwira kwesimba kwakakodzera zvinoreva kuenderana nemagetsi, rudzi rwesisitimu, nzvimbo yekuisa, uye huwandu hwenjodzi yekudzivirira kwenguva refu.
Ndinogara ndichikurudzira kushandisa zvigadzirwa zvakabvumidzwa zvine mwero wakajeka we surge ratings uye dziviriro yekupisa. Dzivisa kusanganisa AC neDC SPDs zvisizvo. Kukundikana kwakawanda kunobva mukuisa AC SPDs pamasekete eDC. Kushanda nemutengesi anonzwisisa maitiro e surge arrester kunoita mutsauko chaiwo.
Mhedziso
Sarudza chakarurama Chishandiso Chinodzivirira Kukwira nhasi kuchengetedza mari yako yezuva uye kuchengetedza sisitimu yako ichishanda mangwana.
Mibvunzo Inowanzo bvunzwa
Mubvunzo 1: Ko masolar systems anoda here dziviriro yeDC surge?
Ehe. MaPV arrays anowanikwa zvakanyanya uye DC surges ndiyo inonyanya kukonzera kutadza kushanda kweinverter.
Mubvunzo wechipiri: SPD imwe chete inogona kudzivirira maseketi ese eAC neDC here?
Kwete. Maseketi eAC neDC anoda magadzirirwo akasiyana eSPD uye ma ratings.
Mubvunzo wechitatu: Mudziyo wekudzivirira we surge unofanira kutsiviwa kangani?
Zvinoenderana nekuwanda kwemvura, asi kuongororwa nguva nenguva kunokurudzirwa gore rega rega.
Mubvunzo wechina: Ko chiyero chepamusoro che kA chinogara chiri nani here?
Hazviwanzoitika. Inofanira kuenderana nenjodzi yesystem nenzvimbo yekuisa.
Mubvunzo wechishanu: Kusashanda zvakanaka kwepasi kunogona kuderedza kushanda kweSPD here?
Ehe. Hunhu hwekudzika pasi hunokanganisa zvakananga mashandiro ekudzora kusvetuka kwemvura.