低圧巻線側からの加圧にも対応した励磁突入電流解析用変圧器モデルの開発

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: 2022/01/01

タイトル(英語): Development of a Reversible Transformer Model for the Calculation of Inrush Currents Energizing from a Higher and Lower Voltage Windings

著者名: 米澤　力道（（一財）電力中央研究所 グリッドイノベーション研究本部ネットワーク技術研究部門）

著者名(英語): Rikido Yonezawa (Energy Innovation Center, Central Research Institute of Electric Power Industry (CRIEPI))

キーワード: 変圧器リバーシブルモデル，瞬時値解析，逆充電，全停復旧，空芯インダクタンス　　reversible transformer model，electromagnetic transient analysis，energization from a lower voltage winding，black start，air-core inductance

要約(英語): Transformers are normally energized from the higher voltage winding. In power system restoration, however, they may be energized from the lower voltage winding. Therefore, a reversible transformer model that is able to accurately calculate inrush currents and some other low-frequency transients is required regardless of which winding is energized. Although a reversible transformer model based on a topology-based model that considers magnetic couplings between phases has been proposed, it is difficult to determine the parameters of the model because iron-core and winding design information are not available in most cases. In addition, the approximation of the design information required when such information is not available does not always hold accurately. In this paper, a reversible transformer model that can be composed only from available information such as nameplates and test reports, without using the design information (or the approximation), by using mutually coupled magnetic resistances has been developed. As a result of verification using a 500VA single-phase three-winding transformer, it is indicated that the inrush currents calculated by the developed model are in good agreement with those obtained by the laboratory measurements using the test transformer regardless of which winding is energized.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.142 No.1 （2022）

本誌掲載ページ: 23-33 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/142/1/142_23/_article/-char/ja/