Kumvetsetsa Ma Grid-Tied PV Systems: Udindo wa Ma Inverters ndi Ma Cable Popewa Kuyikira Islanding

1. Kodi Islanding Phenomenon in Grid-Tied PV Systems ndi chiyani?

Tanthauzo

Chochitika cha pachilumbachi chimachitika pamakina a grid-tied photovoltaic (PV) pomwe gridi yazimitsidwa, koma makina a PV akupitilizabe kupereka mphamvu kuzinthu zolumikizidwa. Izi zimapanga "chilumba" chokhala ndi malo opangira magetsi.

Zowopsa za Islanding

• Zowopsa Zachitetezo: Kuopsa kwa ogwira ntchito zothandizira kukonza grid.
• Kuwonongeka kwa Zida: Zida zamagetsi zitha kulephera chifukwa chamagetsi osakhazikika komanso pafupipafupi.
• Kusakhazikika kwa Gridi: Zilumba zosalamulirika zimatha kusokoneza ntchito yolumikizidwa ya gridi yayikulu.

2. Zinthu Zofunika Kwambiri ndi Ma Parameters a Oyenerera Ma Inverters

Zofunikira za Inverters

1. Chitetezo cha Anti-Islanding: Imagwiritsa ntchito njira zodziwira zomwe zimagwira ntchito komanso zodziwikiratu kuti zitseke nthawi yomweyo pakulephera kwa gridi.
2. MPPT yogwira bwino (Kutsata Kutsata kwa Power Point): Imakulitsa kutembenuka kwamphamvu kuchokera ku mapanelo a PV.
3. Kutembenuka Kwambiri Mwachangu: Nthawi zambiri> 95% kuti muchepetse kutaya mphamvu.
4. Smart Communication: Imathandizira ma protocol ngati RS485, Wi-Fi, kapena Ethernet kuti awonedwe.
5. Kuwongolera Kwakutali: Amalola kuwunika ndi kuwongolera dongosolo patali.

Zofunika Zaumisiri

Kuyerekeza Table

3. Kulumikizana Pakati pa PV Cable Selection ndi Islanding Prevention

Kufunika kwa PV Cables

Zingwe zamtundu wa PV zapamwamba zimagwira ntchito yofunika kwambiri posunga dongosolo lokhazikika ndikuwonetsetsa kuti zidziwitso za gridi zizindikirika bwino, zomwe ndizofunikira kwambiri pamakina odana ndi zisumbu.

1. Kutumiza Kwamphamvu Kwambiri: Imachepetsa kutsika kwamagetsi ndi kutayika kwa mphamvu, kuonetsetsa kuti magetsi akuyenda mosasinthasintha kupita ku inverter.
2. Chizindikiro Cholondola: Imachepetsa phokoso lamagetsi ndi kusintha kwamphamvu, kumapangitsa kuti inverter izindikire kulephera kwa gridi.
3. Kukhalitsa: Imatsimikizira kudalirika kwa nthawi yayitali muzochitika zosiyanasiyana zachilengedwe, kusunga ntchito zokhazikika.

4. AnalimbikitsaPV Cables for Grid-Tied Systems

Zosankha Zapamwamba za PV Cable

1. EN H1Z2Z2-K
   • Mawonekedwe: Utsi wochepa, wopanda halogen, kukana kutentha kwa nyengo.
   • Kutsatira: Imakwaniritsa miyezo ya IEC 62930.
   • Mapulogalamu: Makina a PV okwera pansi komanso padenga.
2. TUV PV1-F
   • Mawonekedwe: Kukana kwabwino kwa kutentha (-40 ° C mpaka +90 ° C).
   • Kutsatira: Chitsimikizo cha TÜV cha miyezo yapamwamba yachitetezo.
   • Mapulogalamu: Makina a PV ogawidwa ndi agrivoltaics.
3. Zida Zankhondo za PV
   • Mawonekedwe: Kupititsa patsogolo chitetezo cha makina ndi kulimba.
   • Kutsatira: Imakwaniritsa miyezo ya IEC 62930 ndi EN 60228.
   • Mapulogalamu: Makina a PV a mafakitale ndi malo ovuta.

Parameter Kuyerekeza Table

Danyang Winpower Wire and Cable Mfg Co., Ltd.

Wopanga zida zamagetsi ndi zinthu, zinthu zazikuluzikulu zimaphatikizapo zingwe zamagetsi, zolumikizira ma waya ndi zolumikizira zamagetsi. Amagwiritsidwa ntchito pamakina anzeru apanyumba, makina a photovoltaic, makina osungira mphamvu, ndi makina amagalimoto amagetsi

Pomaliza ndi Malangizo

• Kumvetsetsa Islanding: Kuyika pachilumba kumabweretsa chiwopsezo chachikulu pachitetezo, zida, ndi kukhazikika kwa gridi, zomwe zimafunikira njira zopewera.
• Kusankha Inverter Yoyenera: Sankhani ma inverters okhala ndi chitetezo chotsutsana ndi zilumba, kuchita bwino kwambiri, komanso kulumikizana mwamphamvu.
• Kuyang'anira Zingwe Zapamwamba: Sankhani zingwe za PV zolimba kwambiri, zocheperako, komanso magwiridwe antchito odalirika kuti mutsimikizire kukhazikika kwadongosolo.
• Kusamalira Nthawi Zonse: Kuwunika pafupipafupi kwa dongosolo la PV, kuphatikiza ma inverters ndi zingwe, ndikofunikira kuti pakhale kudalirika kwanthawi yayitali.

Posankha mosamala zigawo zoyenera ndikusunga dongosolo, makhazikitsidwe a PV omangidwa ndi gridi amatha kukwaniritsa magwiridwe antchito komanso chitetezo pomwe akutsatira miyezo yamakampani.