FDTD法に基づく瞬時値解析用周波数依存線路モデルの検討

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: 2016/12/01

タイトル(英語): A Study of an FDTD-Based Frequency-Dependent Line Model for Electromagnetic Transient Simulations

著者名: 野田　琢（（一財）電力中央研究所 電力技術研究所）

著者名(英語): Taku Noda (Electric Power Engineering Research Lab., CRIEPI)

キーワード: 瞬時値解析，送配電線，周波数依存線路モデル，モード分解，FDTD法，XTAP　　electromagnetic transient (EMT) simulations，transmission and distribution lines，frequency-dependent line model，modal decomposition，FDTD method，XTAP

要約(英語): Electromagnetic transient (EMT) simulations of power systems require accurate representation of models in a wide range of frequencies. This of course applies to the representation of transmission lines, and the phase-domain frequency-dependent line model is often used to this end. The phase-domain line model does not require modal transformation in EMT simulations but requires modal decomposition at its model identification stage, and there are cases where it fails to fix switchovers of propagation modes with respect to frequency. Thus, a frequency-dependent line model which essentially avoids modal decomposition is desired. This paper studies the possibility of a frequency-dependent line model based on the FDTD (Finite Difference Time Domain) method as a candidate which satisfies the above-mentioned requirements. First, improvements regarding computational efficiency and numerical stability are made to Kordi's FDTD-based frequency-dependent line model. Then, the following points are clarified using the developed model: (i) Waveform deformations due to propagation modes with different velocities can be reproduced completely without modal decomposition; (ii) As the time step size becomes larger, waveforms obtained by the developed model become less accurate due to the embedded filter for numerical stability. These points assure, if the error due to the embedded filter is reduced, that the developed model can become a useful frequency-dependent line model without model identification problems.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.136 No.12 （2016）

本誌掲載ページ: 883-890 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/136/12/136_883/_article/-char/ja/