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논문 기본 정보

자료유형
학술저널
저자정보
김수열 (KEPCO Research Institute) 임지훈 (KEPCO Research Institute) 이일용 (KEPCO Research Institute) 김진태 (KEPCO Research Institute) 최인규 (KEPCO Research Institute) 김형근 (KEPCO)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제69권 제10호
발행연도
2020.10
수록면
1,445 - 1,455 (11page)
DOI
10.5370/KIEE.2020.69.10.1445

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초록· 키워드

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Battery ESS had been variously applied to power grid before recent ESS fires in Korea. An investigation committee was constituted to find fire causes and countermeasures to ESS fires. The investigation committee has identified top 4 causes for recent ESS fires as insufficient battery protection system against electric faults, incomplete system integration, inadequate management of operating environment, and careless installation. And recent 2nd investigation committee has presumed that battery abnormal condition was another reason for ESS fires. Battery protection system and system integration could be related with systematic issues such as insulation and protection coordination between PCS and battery system, information sharing and protection sequence. Manufactures made their best efforts to upgrade PCS and battery system by each, but had no much interest in the other subsystems of integrated system except their owns. Systematic analysis is very important to improve the reliability of ESS, which is combined by AC source and DC source via PCS. This paper reports system analysis results and suggests countermeasures against electrical faults, including simulation of ground fault and short fault, demonstration test result and systematic issues more than anything to solve for ESS business going forward.

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Abstract
1. Introduction
2. AC·DC 복합전원 ESS
3. ESS 모델링 및 모의
4. 실증시험 분석 및 시스템 보호
5. Conclusion
References

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