Comparison between energy storage system and regenerative inverter in D.C. traction power supply system for regenerative energy utilization

摘要

We, East Japan Railway Company, have already installed three energy storage systems in d.c. railway power supply system around Tokyo area for regenerative energy utilization and are now constructing new regenerative inverter system at Tokyo Station. In this paper, advantages and disadvantages of those systems will be compared. Furthermore, the examples of load waveforms of traction power supply system and distribution line system at Kajibashi Substation will be shown to discuss feasibility of regenerative energy utilization.