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BESS의 경제성과 충방전 전압 특성을 고려한 적정 SOC 운영 영역 설정 기법에 관한 연구
윤대식(Dae-Sik Yoon),추대혁(Dae-Hyeok Choo),기병국(Byung-Kook Ki),김준석(Joohn-sheok Kim),이병하(Byung Ha Lee),채우규(Woo-Ku Chae) 대한전기학회 2015 전기학회논문지 Vol.64 No.4
With the growing interest of microgrid all over the world, many studies on microgrid operation are being carried out. The battery energy storage system(BESS) is a key equipment for effective operation of the microgrid. In this paper, we analyze the characteristics of the charge and discharge output voltage of the battery and the characteristics of the life-span variation and the investment cost when the state-of-charge (SOC) changes. The formulas to represent the quality of the charge and discharge output voltage of the battery and the economics due to the life-span variation and the investment cost according to DOD(Depth of Discharge) are derived. The methodology of determining the proper operation ranges of the battery SOC with varying the weighting of the quality of its charge and discharge output voltage of the battery and the economics due to its life-span variation and the investment cost is presented using these formulas.