複数の電力変換装置を用いた新幹線き電システムの交流電圧制御の安定性解析

摘要

The recent introduction of very fast and frequent train services at Tokaido-Shinkansen makes it difficult to stabilize the feeding voltage only by compensating reactive power. Therefore, active power compensation has been introduced for further stabilization of the voltage, and a converter control strategy called "fixed power factor method" was applied in the commercial operation that started in February 2009. The feeding voltage stabilizing control by active power compensation is substantially more complicated than the conventional reactive power compensation. This paper describes a novel stability judging method for Shinkansen feeding system with multiple power converters; this method can be used to determine appropriate active/reactive compensation strategies that can be used by the operator of the new Shinkansen power supply system.%交流電圧制御を行う複数の電力変換装置を用いたき電シrnステムについて，非線形性も考慮した精細な数値解析を行rnうことのできるEMTPによる解析と比較して簡易で体系的rnなき電システムの制御系の設計に資する新しい安定性解析rn方法を以下のとおり確立した。