単独運転領域における柱上変圧器の磁気特性の推定

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: 2012/08/01

タイトル(英語): Estimation of Magnetizing Characteristics of Pole Transformer in Islanding Area

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，磁気特性，ひずみ波電圧，単独運転検出，分散形電源　　pole mounted transformer，magnetizing characteristics，distorted wave voltage，islanding operation detection，distributed generator

要約(英語): For the detection of islanding, it is very important to choose the threshold value of harmonic voltage change. In this paper, we propose an analytical model of the pole transformer using a Fourier series, and will clarify the nonlinear magnetizing characteristics of the pole transformer in islanding area. After determining the proposed model coefficients from the tests of the pole transformer excited by sinusoidal voltage, the distorted wave voltage tests were performed under the condition that the third harmonic voltage or the fifth harmonic voltage was superimposed. The results of the testing showed that the magnetic properties vary greatly upon increasing the harmonic component of the voltage. The analysis and measurement results were in good agreement. By using the proposed method, the distributed generators (DGs) can estimate the magnetizing characteristics of the pole transformer by monitoring the connected terminal voltage. So, as the active signal for islanding detection, DGs can inject the harmonic current synchronized to exciting current harmonics of the pole transformer into the distribution network. In the case of the DGs equipped with the above functions, there is no need to change the settings about the islanding detection threshold of harmonic voltage change, even when there is an excitation voltage change or an increase in the number of DGs.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.132 No.8 （2012）

本誌掲載ページ: 826-835 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/132/8/132_826/_article/-char/ja/