低圧線に接続された太陽光発電から見た電力系統の背後インピーダンスの推定

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2017/09/01

タイトル(英語): Estimate of Looking Back Impedance of Photovoltaic Power Generation Connected to Low-voltage Line

著者名: 七原　俊也（東京工業大学工学院電気電子系），猪瀬　大（東北大学大学院工学研究科電気エネルギーシステム専攻），岡本　達希（東北大学大学院工学研究科電気エネルギーシステム専攻）

著者名(英語): Toshiya Nanahara (School of Engineering, Tokyo Institute of Technology), Dai Inose (Graduate School of Engineeringy, Tohoku Universit), Tatsuki Okamoto (Graduate School of Engineeringy, Tohoku Universit)

キーワード: 太陽光発電，背後インピーダンス，低圧，系統連系，回帰分析，スペクトル解析　　photovoltaic power generation，looking back impedance，low voltage，system interconnection，regression analysis，spectral analysis

要約(英語): The paper examines the looking back impedance of photovoltaic power generation (PV) connected to a low voltage line. Although the impedance is one of the vital factors in managing voltage profiles of a power system, few studies have been reported on the impedance. This paper proposes two estimation methods of the impedance using regression and spectral analyses techniques. Since a power factor for the PVs under study is assumed to be unity, the resistance component of the impedance is estimated with the methods. The methods are applied to the actual data obtained for 28 PVs. The estimated resistance with the two methods closely agrees with each other; this implicates the validity of the estimate. The estimates show that the looking back resistance exhibits more than one order difference among the PVs and tends to be smaller for a PV connected to a three phase three wire system than for that connected to a single phase three wire system. The seasonal variations of the resistance are also discussed in this paper.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.137 No.9 （2017）

本誌掲載ページ: 623-631 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/137/9/137_623/_article/-char/ja/