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A Feasibility Study of a Virtual Power Line Device to Improve Hosting Capacity in Renewable Energy Sources

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  • Seong-Eun Rho

    (Department of Electrical Engineering, Korea University of Technology & Education (KUT), Cheonan-si 31253, Chungcheongnam-do, Republic of Korea)

  • Sung-Moon Choi

    (Department of Electrical Engineering, Korea University of Technology & Education (KUT), Cheonan-si 31253, Chungcheongnam-do, Republic of Korea)

  • Joong-Seon Lee

    (Department of Electrical Engineering, Korea University of Technology & Education (KUT), Cheonan-si 31253, Chungcheongnam-do, Republic of Korea)

  • Hyun-Sang You

    (Department of Electrical Engineering, Korea University of Technology & Education (KUT), Cheonan-si 31253, Chungcheongnam-do, Republic of Korea)

  • Seung-Ho Lee

    (Department of Electrical Engineering, Korea University of Technology & Education (KUT), Cheonan-si 31253, Chungcheongnam-do, Republic of Korea)

  • Dae-Seok Rho

    (Department of Electrical Engineering, Korea University of Technology & Education (KUT), Cheonan-si 31253, Chungcheongnam-do, Republic of Korea)

Abstract
As many renewable energy sources have been waiting to be interconnected with distribution systems due to the lack of power system infrastructure in Korea, studies to solve the delayed problem for renewable energy sources required. In order to overcome these problems, this paper presents an introduction model and optimal capacity algorithm of a VPL (virtual power line) device, which is a virtual power line operation technology to manage the power system by operating an ESS installed at the coupling point of renewable energy source without additionally expanding the power system infrastructure in a conventional way; this paper also proposes an economic evaluation method to assess the feasibility of the VPL device. The optimal capacity of the VPL device is determined by solving the over-voltage problem for the customer, and the economic evaluation method for the VPL device is considered by cost and benefit elements to evaluate the feasibility of introduction model for VPL device. From the simulation result of the proposed optimal capacity algorithm and economic evaluation method based on the introduction model in the VPL device, and it was confirmed that the optimal kW capacity of VPL device was selected as the maximum value in power control values, and the optimal kWh capacity was also determined by accumulating the power control values over the time intervals; also, the proper capacity of the VPL can be more economical than the investment cost of power system infrastructure expansion in the conventional method.

Suggested Citation

  • Seong-Eun Rho & Sung-Moon Choi & Joong-Seon Lee & Hyun-Sang You & Seung-Ho Lee & Dae-Seok Rho, 2025. "A Feasibility Study of a Virtual Power Line Device to Improve Hosting Capacity in Renewable Energy Sources," Energies, MDPI, vol. 18(14), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:14:p:3714-:d:1701442
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