단독운전 방지를 위한 능동적 주파수 변환 기법의 검출 성능 및 THD 분석
Detection Performance and THD Analysis of Active Frequency Drift for Anti-Islanding
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
Islanding is a phenomenon that EPS(Electric Power System) is continuously energized by PV PCS(Photovoltaic Power Conditioning System) even when EPS is isolated from the grid. Unintentional islanding will result in safety hazard, power quality degradation and many other issues. So, islanding protection of grid-connected PV PCS is a key function for standards compliance. Nowadays, many anti-islanding schemes are researched. But existing anti-islanding schemes used in PV PCS have power quality degradation and non-detection zone issues. This paper analyses not only detection performance of existed anti-islanding schemes using active frequency drift but also THD of PCS output current according to each value disturbance for anti-islanding. In addition, the lowest value of disturbance in each scheme was tabulated under guarantee of anti-islanding condition.
Abstract
Islanding is a phenomenon that EPS(Electric Power System) is continuously energized by PV PCS(Photovoltaic Power Conditioning System) even when EPS is isolated from the grid. Unintentional islanding will result in safety hazard, power quality degradation and many other issues. So, islanding protection of grid-connected PV PCS is a key function for standards compliance. Nowadays, many anti-islanding schemes are researched. But existing anti-islanding schemes used in PV PCS have power quality degradation and non-detection zone issues. This paper analyses not only detection performance of existed anti-islanding schemes using active frequency drift but also THD of PCS output current according to each value disturbance for anti-islanding. In addition, the lowest value of disturbance in each scheme was tabulated under guarantee of anti-islanding condition.
참고문헌 (5)
- 이기옥, "단독운전방지를 위한 능동적 주파수 변환기법의 출력전력 분석", 한국태양에너지학회 논문집, 29(6), pp.75~80 (2009), 한국태양에너지학회
- 소정훈, "3kW급 계통연계형 태양광발전시스템의 성능특성 비교분석에 관한 연구", 한국태양에너지학회 논문집, 24(2), pp.9~15 (2004), 한국태양에너지학회
- 고문주, "계통연계형 태양광발전 인버터를 위한 주기적인 영전류 구간을 가지는 새로운 AFD 단독운전 검출기법", 한국태양에너지학회 논문집, 26(4), pp.17~24 (2006), 한국태양에너지학회
- Z. Ye, "Evaluation of Anti-Islanding Schemes Based on Non Detection Zone Concept", IEEE Trans. on Power Electronics, pp.1171~1176 (2004)
- Young-Seok Jung, "Analysis of Active Islanding Detection Methods for a Single-Phase Photovoltaic Power Conditioning Systems", Journal of the Korean Institute of Electrical Engineers, pp.1477~1479 (2004)