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Fuzzy Logic을 이용한 마이크로그리드의 독립운전 제어
이홍석(Heung-Seok Lee),박준호(June ho Park),구본길(Bon-Gil Koo),김종율(Jong-Yul Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.6
This paper presents the design of Fuzzy PI controller that is used at BESS(Battery Energy Storage System) charging and discharging process for islanded operation in microgrid. Most of the PI controllers have fixed PI gains, but real-time updated gains are applied to PI controller using Fuzzy logic in this paper. The performances of suggested Fuzzy PI controller are simulated by PSCAD/EMTDC. As a result, output characteristics of ESS applied real-time updated gains to PI controller are faster than those of using fixed gains.
이진 PSO를 이용한 Multiple Bad Data 검출에 관한 연구
정희명(Hee-Myung Jeong),박준호(June Ho Park),이화석(Hwa-Seok Lee) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
The identification of multiple bad data, especially when mutually interacting, may be difficult to handle, since the well known procedures based on the normalized or weighted residuals may become faulty. In such a case, successive elimination of the measurement with the largest normalized residual may result in the suppression of correct measurements instead of the bad data. Then the problem of identifying bad data is considered as a combinatorial decision procedure. In this paper, binary PSO is used for the identification of multiple bad data in the power system state estimation. The proposed binary PSO based procedures behave satisfactorily in the identifying multiple bad data. The test is carried out with reference to the IEEE-14 bus system.