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

概要

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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.