The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Modeling of Battery Energy Storage System at Substation for Load Leveling and Its Economic Evaluation

부하 평준화를 위한 변전소 설치 배터리 에너지 저장장치의 모델 및 경제성 평가에 관한 연구

  • 조성민 (숭실대 공대 전기공학과) ;
  • 신희상 (숭실대 공대 전기공학과) ;
  • 김재철 (숭실대 공대 전기공학과)
  • Received : 2012.01.10
  • Accepted : 2012.06.15
  • Published : 2012.07.01
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Abstract

As development of battery technologies, the installation of Battery Energy Storage System (BESS) increased. The BESS can be used for various purposes such like frequency response, load leveling, and fluctuation mitigation of renewable energy generators. In this paper, three state BESS model is proposed. the BESS model considering charge, discharge and keeping efficiency, and life cycle according to depth of discharge (DOD). Then, the benefit and cost of BESS installed at substation for load leveling are summarized. The economic evaluation of BESS is analyzed using net present values (NPV) analysis. In case study, the NPV analysis of NaS battery system is carried out using the proposed BESS model. Because the result of economic evaluation of BESS using nowadays cost data is not positive, the sensitivity analysis of BESS is conducted by changing the capital cost and energy cost.

Keywords

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