太陽光発電用インピーダンス検出形単独運転検出装置の開発と共振負荷を用いた性能検証

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2013/10/01

タイトル(英語): Development of Islanding Detection Device for PV Inverters by Harmonic Impedance Detection and Performance Verification using Resonant Circuit

著者名: 吉田　義昭（同志社大学 理工学部），鈴木　宏和（東京大学大学院 工学系研究科 電気系工学専攻），藤原　耕二（同志社大学 理工学部），石原　好之（同志社大学 理工学部）

著者名(英語): Yoshiaki Yoshida (Faculty of Science and Engineering, Doshisha University), Hirokazu Suzuki (Department of Electrical Engineering & Information Systems, School of Engineering, The University of Tokyo), Koji Fujiwara (Faculty of Science and Engineering, Doshisha University), Yoshiyuki Ishihara (Faculty of Science and Engineering, Doshisha University)

キーワード: 柱上変圧器，単独運転防止，高調波インピーダンス検出，高調波電圧検出，太陽光発電システム　　pole transformer，islanding-prevention，harmonic impedance detection，harmonic voltage detection，photovoltaic system

要約(英語): When distributed generators (DGs) such as photovoltaic (PV) systems are widely employed in distribution systems, it is important to quickly prevent the islanding operation caused by a power system fault to ensure electrical safety. So, we propose a novel islanding detection method by harmonic injection synchronized with the exciting current harmonics of the pole transformer. We have developed the prototype inverters that apply the proposed method and carried out an experimental study with a resonant circuit having a quality factor ranging from 0.5 to 3.0. We were able to show the feasibility of detecting the islanding operation quickly and reliably, even if the islanding state is in the nondetection zone. According to the experimental results, it was demonstrated that mutual interference does not occur owing to the synchronous state between the active signals, and it was also shown that the proposed method is applicable to the islanding detection system under clustered installation of PV systems.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.133 No.10 （2013）

本誌掲載ページ: 961-969 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/ieejias/133/10/133_961/_article/-char/ja/