無効電力出力分担を考慮した配電系統の電圧制御法

DOI Web Site Web Site BIBCODE 被引用文献21件 参考文献12件

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  • Voltage Control in Distribution Systems Considered Reactive Power Output Sharing
  • ムコウ デンリョク シュツリョク ブンタン オ コウリョ シタ ハイデン ケイトウ ノ デンアツ セイギョホウ

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In recent years, distributed generation (DG) and renewable energy source (RES) are attracting special attention to distribution systems. Renewable energy such as photovoltaic (PV) system and wind turbine generator are used as a source of clean energy. However, the large amount of distributed generation causes voltage deviation beyond a statutory range in distribution systems. This paper proposes a methodology for voltage control by using inverters interfaced with DG and tap changing transformers. In the proposed method a one-day schedule of voltage references for the control devices are determined by an optimization technique based on predicted values of load demand and PV power generation. Furthermore, decided reactive power output according to the locally measurable voltage based on droop characteristic. Slope and base value on droop characteristic are selected by fuzzy control. The proposed method accomplishes improvement against voltage distribution considered the reactive power output sharing and reduction of distribution loss. The effectiveness of the proposed method is verified by using MATLAB®.

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