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A Strategy for Grid-Connected PV-Battery System of Mongolian Ger

Author

Listed:
  • Baigali Erdenebat

    (Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru Nishihara-cho, Okinawa 903-0213, Japan)

  • Naomitsu Urasaki

    (Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru Nishihara-cho, Okinawa 903-0213, Japan)

  • Sergelen Byambaa

    (Department of Electrical Engineering, Power Engineering School, Mongolian University of Science and Technology, Sukhbaatar Disctrict, Ulaanbaatar 14191, Mongolia)

Abstract

One of the main sources of energy utilized in the Mongolian Gers is coal and wood mainly for the purpose of heating and other domestic use. This heavily increases the air pollution levels. A viable solution for handling the air pollution is switching to renewable energy sources (RES). Grid-connected photovoltaic (PV) systems with battery back-up provide a reliable solution to the problem addressing the energy demand and pollution control. This paper proposes a grid-connected PV–second-life battery system and its operation strategy. A single Ger, which consists of a PV array, battery energy storage system (BESS), and an electric heater (EH), is modeled and tested. The trading coefficient and selling unit price are calculated based on variables such as loan, selling price, and purchasing price. The advantages of the proposed strategy are its simple design and easy implementation. The economic result shows that there is a significant reduction in the electricity bill during winters, while the bill can be reduced to zero during summers. Furthermore, the annual profit from the proposed system is USD 15. The CO 2 emissions are reduced from 32 to 7 tCO 2 .

Suggested Citation

  • Baigali Erdenebat & Naomitsu Urasaki & Sergelen Byambaa, 2022. "A Strategy for Grid-Connected PV-Battery System of Mongolian Ger," Energies, MDPI, vol. 15(5), pages 1-13, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1892-:d:764279
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    References listed on IDEAS

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