励磁突入電流の瞬時値解析を目的とした単相変圧器の電流-磁束特性推定手法

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: 2018/02/01

タイトル(英語): A Method for Estimating the Current-flux Curve of a Single-phase Transformer for Electromagnetic Transient Simulations of Inrush Currents

著者名: 小柳　遼平（（一財）電力中央研究所 エネルギーイノベーション創発センター 配電システムユニット 電力品質グループ），野田　琢（（一財）電力中央研究所 エネルギーイノベーション創発センター 配電システムユニット 電力品質グループ），市川　路晴（（一財）電力中央研究所 電力技術研究所）

著者名(英語): Ryohei Oyanagi (Power Quality Group, Distribution System Unit, ENIC, CRIEPI), Taku Noda (Power Quality Group, Distribution System Unit, ENIC, CRIEPI), Michiharu Ichikawa (Electric Power Engineering Research Laboratory, CRIEPI)

キーワード: 励磁突入電流，変圧器，電流-磁束特性，瞬時値解析，配電系統　　inrush currents，transformers，current-flux curves，electromagnetic transient analysis，distribution systems

要約(英語): When a transformer is energized, inrush currents whose magnitudes may reach tens of its nominal current occur. Since the inrush currents lead to a voltage drop, this may cause stops and malfunctions of electrical appliances. In addition, the over-currents may cause an unnecessary operation of an over-current relay and affect the power quality of the distribution system. Currently, distribution system operators use current-versus-time curves of transformer inrush currents for the studies of such phenomena. However, the studies based on the current-versus-time curve give approximate results, and studies based on the current-versus-flux curve is required so as to obtain accurate results. Considering this point, this report proposes a method to convert a given current-versus-time curve to a current-versus-flux one for the case of single-phase transformers. Using the current-versus-flux curve obtained, detailed simulations can be performed using an electromagnetic transient analysis program such as XTAP. In this report, the proposed method is validated by experimental results using a single-phase transformer.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.138 No.2 （2018） 特集：平成29 年電力・エネルギー部門大会

本誌掲載ページ: 183-192 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/138/2/138_183/_article/-char/ja/