도시철도 변전소에 설치한 첨두부하 절감용 ESS의 경제성 분석

초록

This paper evaluates economic benefits of ESS (Energy Storage System) for peak load shaving in thesubstation of urban railway. For this purpose, the method to determine capacities of ESS and PCS (Power ConditioningSystem) for peak load shaving is proposed. Then the economic benefits of those devices are evaluated using net presentvalue method. The proposed methods are applied to actual measurements of loads in the substation of urban railway. The results show that electric power costs can be reduced and the economic benefits of ESS for peak load shavingmainly depends on the price of battery.

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