배터리 가용성 극대화를 고려한 BESS의 AGC 주파수제어 추종운영방안

Operating Method of BESS for Providing AGC Frequency Control Service Considering Its Availability Maximization

저자명 최우영, 유가람, 국경수

문서유형 학술논문

학술지 전기학회논문지 제65권 제7호 (2016년 7월) pp.1161-1168 1975-8359

발행정보 대한전기학회 |2016년 |한국 |한국어

주제분야 공학 > 전기전자공학

서지링크 국회도서관 (청구기호 621.3 ㅈ138) , KISTI

<초록>
Battery energy storage system(BESS) attract the attention of the power system operators with its fast response to a disturbance in spite of its limited energy capacity. This paper proposes the operating method of BESS for following the Automatic Generation Control(AGC) frequency control which is centrally distributed by a system operator. As BESS needs to just meet the control requirement from the system operator, it should be able to properly manage the state of charge(SOC) of BESS to be available to control signal. For doing these, the proposed method distributes the control requirement to available batteries in proportion to its SOC. In addition, unavailable batteries are controlled to recover the SOC to an appropriate range, and the recovering power is supplied by available batteries meeting the control requirement. Moreover, the proposed method manages the efficiency of power conversion system (PCS) by limiting the number of PCS to be assigned for the low control requirement. Finally, the case studies are carried out to verify the effectiveness of proposed strategy.

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