定電力特性に起因する電圧不安定性とテブナン等価インピーダンス行列が表す楕円との関係に関する考察

カテゴリ：部門大会

論文No：029

グループ名：【B】令和7年電気学会電力・エネルギー部門大会

発行日：2025/9/5

タイトル(英語)：Study on Relationship Between Voltage Instability Due to Constant Power Characteristics and Ellipse Represented by Thevenin Equivalent Impedance Matrix

著者名：天野博之（電力中央研究所）

著者名(英語)： Hiroyuki Amano (CRIEPI)

キーワード：電圧安定性,テブナン等価インピーダンス,楕円,System Strength,定電力特性,Voltage Stability,Thevenin Equivalent Impedance,Ellipse,System Strength,Constant Power Characteristic

要約(日本語)：In this paper, it is revealed that the voltage instability due to the increase in the constant power characteristics corresponds to the collapse of the ellipse represented by the Thevenin equivalent impedance matrix (the relationship between injected current and voltage change) of each node. Advanced SCRs and a voltage stability index that are related to the degree of collapse of the ellipse are proposed, and their validity is demonstrated using model systems.

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