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대학 캠퍼스 내 에너지저장장치 연계에 따른 잉여 수소에너지 생산에 관한 연구
최봉기(Bong-Gi Choi),전종현(Jong-Hyun Jun),김성열(Sung-Yul Kim) 대한전기학회 2018 전기학회논문지 P Vol.67 No.2
Depending on how the energy storage system(ESS) is used in a system that can construct a microgrid by using an independent power source such as campus, surplus power can be generated that can not be charged to the ESS. For example, assuming that heat is supplied by a fuel cell in the case of a system in which thermal self-sustaining is prioritized, the fuel cell capacity required differs depending on the heat load. The amount of surplus power that can not be stored in the ESS will appear differently depending on the load operation of the fuel cell for each cycle. This power is hydrogenated through a water electrolytic device to present the amount of hydrogen energy that can be operated for each cycle. Therefore, this paper propose the possibility of utilizing University campus as a hydrogen station.
ToU 요금제를 이용한 V2G 운영에 따른 전력계통 영향 평가
최봉기(Bong-Gi Choi),김성열(Sung-Yul Kim) 대한전기학회 2020 전기학회논문지 Vol.69 No.6
This study evaluates the impact of the power system on the continuous increase of electric vehicles(EV) and presents a plan to reduce the peak load of the power system and increase the stability of the system through the introduction of the V2G system and the introduction of the Time-of-Use tariff using a simulated power system consisting of 17 buses. Based on the charging load of EVs through the current EV"s unidirectional charging system, we analyze the expected charging load from the introduction of the V2G system and the expected charging load from the introduction of the Time-of-Use tariff. In the model in which the ToU tariff was introduced, the change in charging demand due to changes in charging costs was estimated using price elasticity. In this study, through the introduction of the V2G system and the introduction of the ToU tariff, the step-by-step power system stability increase effect can be expected and the appropriate introduction time of each model can be estimated based on the voltage stability.