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Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks

Author

Listed:
  • Amir Farughian

    (School of Technology and Innovations, University of Vaasa, 65200 Vaasa, Finland)

  • Lauri Kumpulainen

    (School of Technology and Innovations, University of Vaasa, 65200 Vaasa, Finland)

  • Kimmo Kauhaniemi

    (School of Technology and Innovations, University of Vaasa, 65200 Vaasa, Finland)

Abstract

In this paper, two new methods for locating single-phase to ground faults in isolated neutral distribution networks are proposed. The methods are based on the analysis of symmetrical sequence currents. They are solely based on currents, not requiring voltage measurement. The first method employs only the zero sequence current and the second one utilizes the negative sequence current in combination with the zero sequence current. It is revealed why using only zero sequence current with a simple threshold is insufficient and may lead to false results. Using the proposed methods, earth faults with high resistances can be located in isolated neutral distribution networks with overhead lines or cables.

Suggested Citation

  • Amir Farughian & Lauri Kumpulainen & Kimmo Kauhaniemi, 2020. "Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks," Energies, MDPI, vol. 13(18), pages 1-10, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:18:p:4732-:d:411946
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    References listed on IDEAS

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    1. Amir Farughian & Lauri Kumpulainen & Kimmo Kauhaniemi, 2019. "Earth Fault Location Using Negative Sequence Currents," Energies, MDPI, vol. 12(19), pages 1-14, September.
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    Cited by:

    1. Kimmo Kauhaniemi, 2023. "Protection and Communication Techniques in Modern Power Systems," Energies, MDPI, vol. 16(5), pages 1-2, February.

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