Development and Evaluation of a Fast Voltage Calculation Method for Low-Voltage Distribution System

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  • Kawano Shunsuke
    Graduate School of Advanced Science and Engineering, Major in Electrical Engineering and Bioscience, Waseda University
  • Hayashi Yasuhiro
    Graduate School of Advanced Science and Engineering, Major in Electrical Engineering and Bioscience, Waseda University
  • Itaya Nobuhiko
    Transmission & Distribution System Center, Mitsubishi Electric Corp.
  • Takano Tomihiro
    Advanced Technology R&D Center, Mitsubishi Electric Corp.
  • Ono Tetsufumi
    Advanced Technology R&D Center, Mitsubishi Electric Corp.

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  • 低圧配電系統における高速電圧計算手法の開発と評価
  • テイアツ ハイデン ケイトウ ニ オケル コウソク デンアツ ケイサン シュホウ ノ カイハツ ト ヒョウカ

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Abstract

Since residential photovoltaic systems trend to increase in low-voltage distribution feeders, it is becoming more important to estimate voltage profile including not only high and middle but low-voltage distribution network to operate distribution systems. In case of using the conventional power flow calculation method based on iterative calculation, it will be taken much time to get voltage values all over low-voltage distribution feeders. This paper presents a new method to calculate voltage quickly keeping the accuracy sufficient for practical operation. In order to check the validity of the proposed method, numerical results are shown by comparing its computation accuracy and time with those of the conventional one.

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