Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Novel Hybrid Anti-islanding Method to Improve Reliability of Utility Interactive Inverter for a PMSG-based Wind Power Generation System

PMSG 기반 풍력발전용 계통연계 인버터의 신뢰성 향상을 위한 새로운 하이브리드 단독운전 방지기법

  • Kang, Sung-Wook (Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology) ;
  • Kim, Kyeong-Hwa (Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology)
  • 강성욱 (서울과학기술대학교 전기정보공학과) ;
  • 김경화 (서울과학기술대학교 전기정보공학과)
  • Received : 2013.07.31
  • Accepted : 2013.09.24
  • Published : 2013.11.30
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Abstract

Islanding in a gird connected inverter of wind power generation system may influence a bad effect on equipments or yield safety hazards on grid so it should be detected rapidly and exactly. A passive method to detect islanding is comparatively simpler than an active method but suffers from non detection zone (NDZ). On the other hand, the active method can significantly reduce NDZ by injecting a disturbance into inverter output. To improve the reliability of islanding detection, this paper proposes a hybrid anti-islanding detection method combining the conventional passive method as well as the active method based on novel harmonic injection method using fourier transform. The proposed scheme is fast to detect islanding when NDZ does not exist because it has the nature of passive method. Under NDZ, the active method can detect occurrence of islanding reliably. The effectiveness and validity of the proposed scheme is proved through comparative simulations.

Keywords

References

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