電圧特性指数を用いた電圧分布近似算定手法

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  • 飯岡 大輔
    名古屋大学大学院工学研究科電子情報システム専攻
  • 多々内 雅仁
    名古屋大学大学院工学研究科電子情報システム専攻
  • 横水 康伸
    名古屋大学大学院工学研究科電子情報システム専攻
  • 松村 年郎
    名古屋大学大学院工学研究科電子情報システム専攻
  • 出原 範久
    中部電力（株）電力技術研究所

書誌事項

タイトル別名
  • Approximate Calculation of Voltage in Distribution System Using Voltage Sensitivity
  • デンアツ トクセイ シスウ オ モチイタ デンアツ ブンプ キンジ サンテイ シュホウ

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抄録

This paper proposed an approximate calculation method to analyze the voltage in distribution system with distributed generation systems. The dependency of loads, distributed generation system, static var compensator (SVC) and energy storage system (ESS) on the voltage is represented by the exponential model. Applying the Taylor series approximation to the exponential model, we have found the linear relationship between the voltage and the current injection which is summation of currents flowing into the load, distributed generation system, SVC and ESS. In the electric transmission system, the imaginary part of the voltage drop between sending end and receiving end was ignored. It was found that these approximations enable us to make a linear equation of node voltage and obtain the approximate value of the receiving end voltage. It was shown that the error ratio of approximate value increases with the magnitude of line impedance. However, it was found that the application of the proposed method to the general distribution system enable us to analyze the voltage which is in error by up to 1%.

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