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Research on a New Type of Composite Islanding Detection Method

Received: 20 April 2017    Accepted:     Published: 20 April 2017
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Abstract

Distributed photovoltaic (PV) grid failure occurs, the short circuit fault current is small, and the power flow is bidirectional, the traditional power grid relay protection method is no longer applicable. In this article, through the study of traditional active frequency drift islanding detection method (AFD), analyses its advantages and disadvantages and applicable occasions, a new type of composite island detection method is proposed, the method based on adaptive islanding detection method accelerated frequency shift (AAFD), by introducing the common coupling point voltage frequency in a direction of continuous change number n, piecewise adaptively adjust frequency positive feedback coefficient, accelerate the limit of the frequency deviation, if the number of change if more than a dozen times, are not the limit of the frequency, the constant 2 cycle of negative pulse current amplitude power frequency interference, trigger under-voltage protection, so as to detect the island.this method can reduce the grid harmonic distortion rate, improve the response time of the island detection. At last, through Matlab simulation to verify.

Published in Science Discovery (Volume 5, Issue 2)
DOI 10.11648/j.sd.20170502.12
Page(s) 86-93
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Distributed Photovoltaic, An Island Detection, Frequency Deviation, The Adaptive

References
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Cite This Article
  • APA Style

    Wang Hao, An Yuan, Wang Songkai, Ding Hang. (2017). Research on a New Type of Composite Islanding Detection Method. Science Discovery, 5(2), 86-93. https://doi.org/10.11648/j.sd.20170502.12

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    ACS Style

    Wang Hao; An Yuan; Wang Songkai; Ding Hang. Research on a New Type of Composite Islanding Detection Method. Sci. Discov. 2017, 5(2), 86-93. doi: 10.11648/j.sd.20170502.12

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    AMA Style

    Wang Hao, An Yuan, Wang Songkai, Ding Hang. Research on a New Type of Composite Islanding Detection Method. Sci Discov. 2017;5(2):86-93. doi: 10.11648/j.sd.20170502.12

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  • @article{10.11648/j.sd.20170502.12,
      author = {Wang Hao and An Yuan and Wang Songkai and Ding Hang},
      title = {Research on a New Type of Composite Islanding Detection Method},
      journal = {Science Discovery},
      volume = {5},
      number = {2},
      pages = {86-93},
      doi = {10.11648/j.sd.20170502.12},
      url = {https://doi.org/10.11648/j.sd.20170502.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20170502.12},
      abstract = {Distributed photovoltaic (PV) grid failure occurs, the short circuit fault current is small, and the power flow is bidirectional, the traditional power grid relay protection method is no longer applicable. In this article, through the study of traditional active frequency drift islanding detection method (AFD), analyses its advantages and disadvantages and applicable occasions, a new type of composite island detection method is proposed, the method based on adaptive islanding detection method accelerated frequency shift (AAFD), by introducing the common coupling point voltage frequency in a direction of continuous change number n, piecewise adaptively adjust frequency positive feedback coefficient, accelerate the limit of the frequency deviation, if the number of change if more than a dozen times, are not the limit of the frequency, the constant 2 cycle of negative pulse current amplitude power frequency interference, trigger under-voltage protection, so as to detect the island.this method can reduce the grid harmonic distortion rate, improve the response time of the island detection. At last, through Matlab simulation to verify.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Research on a New Type of Composite Islanding Detection Method
    AU  - Wang Hao
    AU  - An Yuan
    AU  - Wang Songkai
    AU  - Ding Hang
    Y1  - 2017/04/20
    PY  - 2017
    N1  - https://doi.org/10.11648/j.sd.20170502.12
    DO  - 10.11648/j.sd.20170502.12
    T2  - Science Discovery
    JF  - Science Discovery
    JO  - Science Discovery
    SP  - 86
    EP  - 93
    PB  - Science Publishing Group
    SN  - 2331-0650
    UR  - https://doi.org/10.11648/j.sd.20170502.12
    AB  - Distributed photovoltaic (PV) grid failure occurs, the short circuit fault current is small, and the power flow is bidirectional, the traditional power grid relay protection method is no longer applicable. In this article, through the study of traditional active frequency drift islanding detection method (AFD), analyses its advantages and disadvantages and applicable occasions, a new type of composite island detection method is proposed, the method based on adaptive islanding detection method accelerated frequency shift (AAFD), by introducing the common coupling point voltage frequency in a direction of continuous change number n, piecewise adaptively adjust frequency positive feedback coefficient, accelerate the limit of the frequency deviation, if the number of change if more than a dozen times, are not the limit of the frequency, the constant 2 cycle of negative pulse current amplitude power frequency interference, trigger under-voltage protection, so as to detect the island.this method can reduce the grid harmonic distortion rate, improve the response time of the island detection. At last, through Matlab simulation to verify.
    VL  - 5
    IS  - 2
    ER  - 

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Author Information
  • Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, China

  • Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, China

  • Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, China

  • Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, China

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