불확실한 전력수요에 강인한 에너지 저장장치 운영 방법
A Robust Operation Strategy of Energy Storage Systems with an Uncertain Load Profile
- 주제(키워드) smart Grid , energy storage system , peak reduction , time of use pricing
- 발행기관 서강대학교 일반대학원
- 지도교수 김홍석
- 발행년도 2017
- 학위수여년월 2017. 2
- 학위명 석사
- 학과 및 전공 일반대학원 전자공학과
- 실제URI http://www.dcollection.net/handler/sogang/000000061430
- 본문언어 영어
- 저작권 서강대학교 논문은 저작권보호를 받습니다.
초록/요약
In this thesis, we propose a way to reduce total cost and peak load of factories from a customer point of view. We control energy storage system (ESS) to minimize the total electric cost under the Korea commercial and industrial tariff (KCIT) policy that both considers time of use and peak load. Under KCIT, the average peak load measured in 15 minutes determines the monthly base cost, thus peak load control is crucial. We aim to leverage ESS for both energy arbitrage exploiting ToU as well as peak load reduction based on load prediction. However, load prediction inevitably has some uncertainty, which makes ESS operation challenging with KCIT policy. To tackle it, we propose to apply robust linear optimization to minimize risk in a real time environment. Our approach significantly reduces the total cost compared to the case that does not use robust optimization. In doing this we also consider battery degradation cost, which validates the practical usage of the proposed algorithm.
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