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병렬 연결된 다수 대 계통연계형 인버터를 위한 단독운전 방지 기법

The Anti-islanding Scheme for a Number of Grid-connected Inverters Under Parallel Operation

  • Kim, Dong-Kyune (Department of Electric Engineering, Kwangwoon University) ;
  • Cho, Sang-Rae (Department of Electric Engineering, Kwangwoon University) ;
  • Choy, Ick (Department of Robotics, Kwangwoon University) ;
  • Lee, Young-Kwoon (Department of Robotics, Kwangwoon University) ;
  • Choi, Ju-Yeop (Department of Electric Engineering, Kwangwoon University)
  • 투고 : 2017.03.22
  • 심사 : 2017.06.21
  • 발행 : 2017.06.30

초록

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.

키워드

참고문헌

  1. Ye, Z., Kolwalkar, A., Zhang, Y., Du, P., and Walling, R., Evaluation of Anti-islanding Schemes Based on Non-dectection Zone Concept, Sustainable Energy Technologies, 2008. ICSET 2008. IEEE International Conference on Digital Object Identifier, pp. 1171-1176, 2004.
  2. Lee, K. O., Output power analysis for active frequency drift method, Journal of the Korea Solar Energy Society, Vol. 29, No. 6, pp. 75-80, 2009.
  3. 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.
  4. Jo, Y. M., Analysis of Anti-Islanding Schemes using Frequency Drift in Distributed Generation System, Journal of the Korean Institute of Electrical Engineers, Vol. 20, No. 3, pp. 247-254, 2015.
  5. Jo, Y. M., Detection Performance and THD Analysis of Active Frequency Drift for Anti-islanding, Journal of the Korea Solar Energy Society, Vol. 35, No. 2, pp. 11-19, 2015. https://doi.org/10.7836/kses.2015.35.2.011

피인용 문헌

  1. 전력계통 고장시 계통연계형 태양광발전시스템의 영향분석 vol.39, pp.4, 2019, https://doi.org/10.7836/kses.2019.39.4.069