인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 51 - 60 (10page)
- DOI
- 10.5370/KIEE.2021.70.1.051
이용수
초록· 키워드
Battery system might be severely effected by unexpected ferro-resonance phenomenon in Li-ion battery based ESS, which is energetically installed and operated in large scale way. Therefore, this paper defines mechanism of the ferro-resonance phenomenon with L-C series and series-parallel combination circuits, which is regarded as one of electrical hazards, and proposes characteristics of the ferro-resonance through graphical solutions and equivalent circuit. And also, this paper proposes an algorithm to prevent ferro-resonance phenomenon in the interconnected transformer that can avoid the ferro-resonance by calculating appropriate capacity of PCS filter based on the presented ferro-resonance characteristics. Furthermore, this paper performs modeling of ESS based on PSCAD/EMTDC, which is composed of 3-phase power supply system including circuit breaker and interconnected transformer, PCS(power control system) and battery system. From the simulation results based on the proposed modeling, it is confirmed that secondary voltage of interconnected transformer for ESS can be rapidly increased due to the ferro-resonance phenomenon in L-C series and series-parallel combination circuits and then the battery system may be severely affected by such rapid over-voltage. And also, it is confirmed that the proposed prevention algorithm of ferro-resonance can contribute to stable operation of ESS by installing optimal capacity of filter in PCS.
#Ferro-resonance
#ESS
#Grid-connected Transformer
#Core Saturation
#Surge Voltage
#Prevention Algorithm
#PSCAD/EMTDC
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목차
- Abstract
- 1. 서론
- 2. 변압기 철심포화 및 철공진 메커니즘
- 3. PSCAD/EMTDC를 이용한 ESS용 연계변압기의 철공진 모델링
- 4. ESS용 연계변압기의 철공진 방지 알고리즘
- 5. 시뮬레이션 결과 및 분석
- 6. 결론
- References
참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2021-560-001427242