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An Irregular Current Injection Islanding Detection Method Based on an Improved Impedance Measurement Scheme

Author

Listed:
  • Menghua Liu

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Wei Zhao

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Qing Wang

    (Department of Engineering, Durham University, Durham DH1 3LE, UK)

  • Songling Huang

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Kunpeng Shi

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

Abstract

One class of islanding detection methods, known as impedance measurement-based methods and voltage change monitoring-based methods, are implemented through injecting irregular currents into the network, for which reason they are defined in this paper as irregular current injection methods. This paper indicates that such methods may be affected by distributed generation (DG) unit cut-in events. Although the network impedance change can still be used as a judgment basis for islanding detection, the general impedance measurement scheme cannot separate island events from DG unit cut-in events in multi-DG operation. In view of this, this paper proposes a new islanding detection method based on an improved impedance measurement scheme, i.e., dynamic impedance measurement, which will not be affected by DG unit cut-in events and can further assist some other equipment in islanding detection. The simulations and experiments verify the stated advantages of the new islanding detection method.

Suggested Citation

  • Menghua Liu & Wei Zhao & Qing Wang & Songling Huang & Kunpeng Shi, 2018. "An Irregular Current Injection Islanding Detection Method Based on an Improved Impedance Measurement Scheme," Energies, MDPI, vol. 11(9), pages 1-18, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2474-:d:170410
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    References listed on IDEAS

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    1. Anna Rita Di Fazio & Mario Russo & Sara Valeri, 2015. "A New Protection System for Islanding Detection in LV Distribution Systems," Energies, MDPI, vol. 8(5), pages 1-19, April.
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    Cited by:

    1. Faisal Mumtaz & Kashif Imran & Abdullah Abusorrah & Syed Basit Ali Bukhari, 2023. "An Extensive Overview of Islanding Detection Strategies of Active Distributed Generations in Sustainable Microgrids," Sustainability, MDPI, vol. 15(5), pages 1-19, March.
    2. Menghua Liu & Wei Zhao & Qing Wang & Songling Huang & Kunpeng Shi, 2019. "Compatibility Issues with Irregular Current Injection Islanding Detection Methods and a Solution," Energies, MDPI, vol. 12(8), pages 1-20, April.

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