전력계통 운영적용을 위한 전기저장장치 고장률 산정방안
Outage Rate Calculating Method of Energy Storage System for the Application on Power System Operation
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초록
전기저장장치가 주파수조정예비력 자원으로써 전력계통 운영에 대한 기여도가 증가됨에 따라 전기저장장치 설비용량의신뢰성 확보가 요구되고 있으며, 이를 위해서는 전기저장장치의 가용용량에 고장률을 고려할 필요가 있다. 그러나 기존의 전기저장장치 고장률 산정방안은 전기저장장치 설비의 구조적 특징을 정확히 고려하지 못해 전기저장장치의 가용용량을 정확히 반영하지 못하고 있다. 본 논문에서는 전기저장장치 설비의 특징을 분석하고 이를 반영한 전기저장장치의 고장률 산정방안을 제안하였고 사례연구를 통하여 제안된 방안의 유효성을 검토하였다.
Abstract
As the contribution of the Energy Storage System (ESS) on the power system operations has increased, it is requiredto secure the reliability on the capacity of ESS and this needs to consider the outage rate in calculating the availablecapacity of ESS. However, the existing method of calculating the outage rate does not consider the configuration of ESSand this does not accurately calculate the available capacity of ESS. For this, this paper analyzes the structuralcharacteristics of ESS in Korean power system and proposes a method to calculate the outage rate of ESS. Through thestudy cases adopting the Korea Electric Power Corporation (KEPCO) ESS for providing the frequency response service,the effectiveness of the proposed method verified.
참고문헌 (7)
- KPX, "Power System Operations Guide", ~ (2018)
- "KEPCO Major Business"[URL]
- The 8th Basic Plan for Long-term Electricity Supply and Demand, "MOTIE", ~ (2017)
- W. Y. Choi, "Impact Analysis of BESS for Providing Frequency Response in Korean Power System", 7th international conference on Advanced Power System Automation &Protection (APAP 2017) (2017)
- 임현옥, "전력계통 주파수응답 기여도 기반의 전기저장장치 주파수추종서비스 유효용량 산정", 전기학회논문지, 66(11), pp.1561~1567 (2017), 대한전기학회
- W. Y. Choi, "Frequency Response Performances Analysis using Cases before and after the Commercial Operation of FR ESS in Korean Power System", KIEE Power Engineering Society, pp.5~7 (2018)
- Tae-Hwan Jin, "Real-Time Dynamic Simulation of Korean Power Grid for Frequency Regulation Control by MW Battery Energy Storage System", Journal of Sustainable Development of Energy, Water and Environment Systems, 4(4), pp.392~407 (2016), SDEWES Centre[DOI]