병렬 연결된 다수 대 계통연계형 인버터를 위한 단독운전 방지 기법
The Anti-islanding Scheme for a Number of Grid-connected Inverters Under Parallel Operation
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Anti-islanding scheme of grid-connected inverter is a key function of standards compliance, since unintentional islanding results in safety hazards, reliability, and many other issues. Therefore, many anti-islanding schemes have been researched, however, most of them have problems, which deteriorate performance of islanding detection under parallel-operation. Therefore, this paper proves the reason of problems and proposes a new anti-islanding scheme that has precise islanding detection under parallel-operation in single-phase and three-phase system. Finally, both simulation and experimental result validate the proposed scheme.
Abstract
Anti-islanding scheme of grid-connected inverter is a key function of standards compliance, since unintentional islanding results in safety hazards, reliability, and many other issues. Therefore, many anti-islanding schemes have been researched, however, most of them have problems, which deteriorate performance of islanding detection under parallel-operation. Therefore, this paper proves the reason of problems and proposes a new anti-islanding scheme that has precise islanding detection under parallel-operation in single-phase and three-phase system. Finally, both simulation and experimental result validate the proposed scheme.
참고문헌 (5)
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- Jung, Y. S., "Islanding Detection Function of Grid-connected Power Conditioning System of Parallel Operation", The Korean Institute of Electrical Engineers, pp.1100~1101 (2013)
- 조영민, "분산전원 시스템의 주파수 변동을 통한 단독운전 방지기법 분석", 전력전자학회 논문지, 20(3), pp.247~254 (2015), 전력전자학회[DOI]
- 조영민, "단독운전 방지를 위한 능동적 주파수 변환 기법의 검출 성능 및 THD 분석", 한국태양에너지학회 논문집, 35(2), pp.11~20 (2015), 한국태양에너지학회