Momwe Mungayikitsire Magetsi a Anti-Reverse (Zero-Export) mu PV Systems - Kalozera Wathunthu

Mawu Oyamba

Pamene kukhazikitsidwa kwa photovoltaic (PV) kukufulumizitsa, mapulojekiti ambiri akukumana nawoZofunikira za zero. Zothandizira nthawi zambiri zimaletsa mphamvu yadzuwa yochulukirapo kuti isabwererenso mu gridi, makamaka m'malo omwe ali ndi zosinthira zodzaza, umwini wosadziwika waufulu wolumikizira ma gridi, kapena malamulo okhwima amagetsi. Bukuli likufotokoza momwe mungayikitsireanti-reverse (zero-export) mphamvu mamita, mayankho apakatikati omwe alipo, ndi masinthidwe oyenera amitundu yosiyanasiyana ya PV system ndi magwiritsidwe ake.

1. Mfundo zazikuluzikulu Musanayike

Zochitika Zovomerezeka za Zero-Export

  • Transformer machulukitsidwe: Ma thiransifoma am'deralo akayamba kugwira ntchito mwamphamvu kwambiri, mphamvu zobwerera kumbuyo zimatha kubweretsa kuchulukira, kudumpha, kapena kulephera kwa zida.

  • Kudzidyerera nokha (palibe chololeza kutumiza kunja kwa gridi): Ntchito zopanda kuvomerezedwa ndi gridi ziyenera kugwiritsa ntchito mphamvu zonse zopangidwa kwanuko.

  • Chitetezo chamtundu wa mphamvu: Mphamvu zobwerera kumbuyo zimatha kuyambitsa zida za DC, ma harmonics, kapena katundu wosakwanira, kutsitsa mtundu wa gridi.

Mndandanda Woyang'anira Kuyika

  • Kugwirizana kwa chipangizo: Onetsetsani kuti mphamvu ya mita yovotera ikufanana ndi kukula kwa dongosolo la PV (gawo limodzi ≤8kW, magawo atatu> 8kW). Yang'anani kulumikizana kwa inverter (RS485 kapena yofanana).

  • Chilengedwe: Pokhazikitsa panja, konzani malo otetezedwa ndi nyengo. Kwa makina osinthira ma inverter ambiri, konzekerani ma waya a RS485 kapena ma Ethernet data concentrators.

  • Kutsata ndi chitetezo: Tsimikizirani malo olumikizirana ndi gululi ndi zofunikira, ndipo onani kuti kuchuluka kwa katundu kumafanana ndi m'badwo wa PV womwe ukuyembekezeredwa.

2. Core Zero-Export Solutions

Yankho 1: Kuchepetsa Mphamvu kudzera pa Inverter Control

  • Mfundo yofunika: Meta yanzeru imayesa komwe kuli nthawi yeniyeni. Kutuluka kwa reverse kuzindikirika, mita imalumikizana kudzera pa RS485 (kapena ma protocol ena) ndi inverter, yomwe imachepetsa mphamvu yake yotulutsa mpaka kutumiza = 0.

  • Gwiritsani ntchito milandu: Madera odzaza ndi ma Transformer, mapulojekiti odzipangira okha okhala ndi katundu wokhazikika.

  • Ubwino wake: Zosavuta, zotsika mtengo, kuyankha mwachangu, palibe chifukwa chosungira.

Yankho 2: Katundu Mayamwidwe kapena Energy Storage Integration

  • Mfundo yofunika: Oyang'anira mita ali pano polumikizira gululi. M'malo mochepetsa kutulutsa kwa inverter, mphamvu zochulukirapo zimapatutsidwa kumakina osungira kapena kutaya katundu (mwachitsanzo, ma heaters, zida zamafakitale).

  • Gwiritsani ntchito milandu: Ma projekiti okhala ndi katundu wosiyanasiyana kwambiri, kapena komwe kukulitsa kupanga PV ndikofunikira.

  • Ubwino wake: Ma inverters amakhala mu MPPT mode, mphamvu siziwonongeka, ROI yapamwamba kwambiri.

OWON Smart Wi-Fi Din Rail Power Meter yokhala ndi Relay ya PV ndi Energy Monitoring

3. Kuyika Zochitika ndi Kukula Kwadongosolo

Single-Inverter Systems (≤100 kW)

  • Kusintha: 1 inverter + 1 bidirectional smart mita.

  • Malo a mita: Pakati pa inverter AC linanena bungwe ndi wosweka waukulu. Palibe katundu wina ayenera kulumikizidwa pakati.

  • Wiring Order: Inverter ya PV → Zosintha Zamakono (ngati zikugwiritsidwa ntchito) → Miyendo yanzeru yamagetsi → Chophwanyira chachikulu → Katundu wamba / Gridi.

  • Zomveka: Mamita amayesa mayendedwe ndi mphamvu, ndiye inverter imasintha zotuluka kuti zigwirizane ndi katundu.

  • Pindulani: Mawaya osavuta, otsika mtengo, kuyankha mwachangu.

Multi-Inverter Systems (> 100 kW)

  • Kusintha: Ma inverter angapo + 1 mita yamagetsi yanzeru + 1 cholumikizira data.

  • Malo a mita: Pamalo olumikizirana gululi (zotulutsa zonse za inverter zitaphatikizidwa).

  • Wiring: Zotulutsa zosinthira → Busbar → mita yolowera mbali ziwiri → cholumikizira data → Chophwanyira chachikulu → Gridi/Katundu.

  • Zomveka: The concentrator data imasonkhanitsa deta ya mita ndikugawa malamulo ku inverter iliyonse molingana.

  • Pindulani: Scalable, centralized control, flexible parameter settings.

4. Kuyika mu Mitundu Yosiyana ya Project

Ntchito Zodzipangira Zokha

  • Chofunikira: Palibe kutumizira kwa gridi komwe kumaloledwa.

  • Malo a mita: Pakati pa inverter AC linanena bungwe ndi m'deralo katundu wosweka. Palibe switch yolumikizira gridi yomwe imagwiritsidwa ntchito.

  • Onani: Yesani pansi pa m'badwo wonse wopanda katundu - inverter iyenera kuchepetsa mphamvu mpaka ziro.

Transformer Saturation Projects

  • Chofunikira: Kulumikiza kwa gridi ndikololedwa, koma mphamvu yosinthira ndiyoletsedwa.

  • Malo a mita: Pakati pa zotulutsa za inverter ndi grid connection breaker.

  • Zomveka: Ngati mphamvu yobwereranso ikapezeka, inverter imalepheretsa kutulutsa; monga zosunga zobwezeretsera, ophwanya amatha kulumikizidwa kuti apewe kupsinjika kwa transformer.

Ntchito Zodzipangira Zachikhalidwe + Zogulitsa Zogulitsa Gridi

  • Chofunikira: Kutumiza kunja ndikololedwa, koma kochepa.

  • Kupanga mita: Anti-reverse mita yoyikika pamndandanda wokhala ndi mita yolipirira yoyang'ana pawiri.

  • Zomveka: The anti-reverse mita imalepheretsa kutumiza kunja; pokhapokha ngati zalephereka m'pamene ma utility mita amajambulitsa kudyedwa.

5. Mafunso Ofunsidwa Kawirikawiri

Q1: Kodi mita yokhayo imasiya kuyenda mobwerera?
Ayi. Miyero imayesa komwe mphamvu ikuchokera ndikuzinena. Inverter kapena controller imagwira ntchitoyo.

Q2: Kodi dongosololi lingachite bwanji?
Nthawi zambiri mkati mwa masekondi a 1-2, kutengera liwiro la kulumikizana ndi firmware ya inverter.

Q3: Kodi chimachitika ndi chiyani pakalephera intaneti?
Kulankhulana kwanuko (RS485 kapena kuwongolera mwachindunji) kumatsimikizira chitetezo chopitilira popanda intaneti.

Q4: Kodi mamitawa angagwire ntchito mu magawo ogawanika (120/240V)?
Inde, mitundu ina idapangidwa kuti igwirizane ndi magawo omwe amagwiritsidwa ntchito ku North America.

Mapeto

Kutengera kugulitsa kunja kukufunika kuma projekiti ambiri a PV. Pokhazikitsa anti-reverse smart power metre pamalo oyenera ndikuwaphatikiza ndi ma inverter, kutaya katundu, kapena kusungirako,EPCs, makontrakitala, ndi omangaimatha kupereka makina oyendera dzuwa odalirika komanso ogwirizana ndi malamulo. Zothetsera izi osati zokhachitetezo gridkomansoonjezerani kudzidyera nokha ndi ROIkwa ogwiritsa ntchito omaliza.

Nthawi yotumiza: Sep-07-2025
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