전기철도 회생에너지 활용 극대화를 위한 에너지 저장장치 최적 동작 전압 결정 알고리즘에 관한 연구

초록

In this paper, the optimized charging-discharging scheme for energy storage systems (ESSs) on the railway systems are resented to enhance the energy efficiency around the Korean suburban railway systems. To coordinate the control of ESSs, continuous dc railway loadflow analysis considering ESSs has been performed with the real railway operation data. First, the total amount of charged energy with the specific charging voltage is calculated. Then the discharging voltages are calculated with the optimization algorithm to discharge all amounts of charged energy. To verify the effects of the boundary variation, case studies for Seoul Metro Line had been performed. Consequently, the energy efficiency is enhanced and the storage capacity is optimized with the operation boundary optimization algorithm.