Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Novel AFD method of islanding detection with a periodic zero current for improving on islanding detection for grid-connected Photovoltaic inverters

계통연계형 태양광발전 인버터를 위한 주기적인 영전류 구간을 가지는 새로운 AFD 단독운전 검출기법

  • Ko, Moon-Ju (Dept. of Information and Control Eng., Kwangwoon University) ;
  • Choy, Ick (Dept. of Information and Control Eng., Kwangwoon University) ;
  • Choi, Ju-Yeop (Dept. of Electrical Eng., Kwangwoon University) ;
  • Song, Seung-Ho (Dept. of Electrical Eng., Kwangwoon University) ;
  • Lee, Ki-Ok (Dept. of Electrical Eng., Kwangwoon University)
  • 고문주 (광운대학교 정보제어공학과) ;
  • 최익 (광운대학교 정보제어공학과) ;
  • 최주엽 (광운대학교 전기공학과) ;
  • 송승호 (광운대학교 전기공학과) ;
  • 이기옥 (광운대학교 전기공학과)
  • Published : 2006.12.30
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Abstract

This paper proposes a novel active frequency drift (AFD) method for the islanding prevention of grid-connected photovoltaic inverter. To detect the islanding phenomenon of grid-connected photovoltaic (PV) inverters concerning about the safety hazards and the damage to other electric equipments, many kinds of anti-islanding methods have been presented. Among them, AFD method using chopping fraction enables the islanding detection to drift up (or down) the frequency of the voltage during the islanding situation. In this paper, injecting the periodic zero current into the basic AFD method is proposed. This proposed method shows the analytical design value of cf to meet the test procedure of IEEE Std. 1547 with various load conditions. Detection of islanding is verified using simulation tool PSIM.

Keywords

References

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