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유효전력변동방식을 이용한 새로운 단독운전 검출기법 연구
유병규(Byung-Gyu Yu),정영석(Young-Seok Jung),미키히코 마츠이(Mikihiko Matsui),유권종(Gwon-Jong Yu) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
Islanding phenomenon is undesirable because it lead to a safety hazard to utility service personnel and may cause damage to power generation and power supply facilities as a result of unsynchronized reclosure. In order to prevent the phenomenon, various anti-islanding methods have been studied. This paper proposes the variation method of inverter output current magnitude to prevent the islanding phenomenon as a novel method, which causes the large frequency variation of inverter output voltage after islanding. Unlike most active anti-islanding method deteriorating power quality, this novel method will have high performance of islanding detection and good power quality. For the verification of the proposed method, the simulated result and analyses are presented.