전력 보조서비스 제공을 위한 전기자동차 충/방전 최적화 (Battery Charge and Discharge Optimization for Vehicle-to-grid Regulation Service)

서지정보

· 발행기관 : 대한전기학회
· 수록지 정보 : 전기학회논문지 / 63권 / 8호 / 1033 ~ 1038페이지
· 저자명 : 김욱원, 신홍열, 김진오, 김규호

초록

Electric vehicles should be connected to power system for charge and discharge of battery. Besides vehicle'sbattery is charged for a power source, it is also reversibly possible to provide power source from battery to powersystem. Researches on battery usage for regulation resources have been progressed and could cause cost increaseexcessively because they distribute regulation capacity equally without considering the battery wear cost of SOC,temperature, voltage and so on. This causes increase of grid maintenance cost and aggravate economical efficiency. Inthis paper it is studied that the cost could be minimized according to the battery condition and characteristic. Theequation is developed in this paper to calculate the possible number of charge and discharge cycle, according to SOClevel and weighting factors representing the relation between battery life and temperature as well as voltage. Thereafter,the correlation is inferred between the battery condition and wear cost reflecting the battery price, and the expense ofcompensation is decided according to the condition on battery wear-out of vehicle. In addition, using realtime errorbetween load and load expectation, it is calculated how much regulation capacity should be provided.

영어초록

Electric vehicles should be connected to power system for charge and discharge of battery. Besides vehicle'sbattery is charged for a power source, it is also reversibly possible to provide power source from battery to powersystem. Researches on battery usage for regulation resources have been progressed and could cause cost increaseexcessively because they distribute regulation capacity equally without considering the battery wear cost of SOC,temperature, voltage and so on. This causes increase of grid maintenance cost and aggravate economical efficiency. Inthis paper it is studied that the cost could be minimized according to the battery condition and characteristic. Theequation is developed in this paper to calculate the possible number of charge and discharge cycle, according to SOClevel and weighting factors representing the relation between battery life and temperature as well as voltage. Thereafter,the correlation is inferred between the battery condition and wear cost reflecting the battery price, and the expense ofcompensation is decided according to the condition on battery wear-out of vehicle. In addition, using realtime errorbetween load and load expectation, it is calculated how much regulation capacity should be provided.

참고자료

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