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Improving the Efficiency of Earth Fault Detection by Fault Current Passage Indicators in Medium-Voltage Compensated Overhead Networks

Author

Listed:
  • Bartosz Olejnik

    (Faculty of Environmental Engineering and Energy, Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo Street 5, 60-965 Poznan, Poland)

  • Beata Zięba

    (Faculty of Computer, Electrical and Control Engineering, Institute of Automation, Electronics and Electrical Engineering, University of Zielona Gora, Z. Szafrana Street 2, 65-516 Zielona Gora, Poland)

Abstract

The article presents a method for detecting earth faults in a compensated medium-voltage network, which can be used especially in fault current passage indicators, but also in standard protection devices. The method is based on the adaptation process of the zero-sequence current protection setting, with the adaptation factor depending on the current value of the zero-sequence voltage. In this article, a comparative analysis of the classical and adaptive zero-sequence current criterion is conducted, taking into account the errors of the measuring system. The results of simulations performed in the PSCad environment are also presented. For a representative set of example short circuits, it was shown that the effectiveness of the presented criterion can be more than 50% higher than that of the standard criteria, taking into account the range of detected transition resistances. A comparison of the proposed method with admittance criteria was also drawn, and it was shown that it is suitable for the detection of high-resistance earth faults.

Suggested Citation

  • Bartosz Olejnik & Beata Zięba, 2022. "Improving the Efficiency of Earth Fault Detection by Fault Current Passage Indicators in Medium-Voltage Compensated Overhead Networks," Energies, MDPI, vol. 15(23), pages 1-19, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:9007-:d:986818
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    References listed on IDEAS

    as
    1. Yaojing Tang & Yongle Chang & Jinrui Tang & Bin Xu & Mingkang Ye & Hongbo Yang, 2021. "A Novel Faulty Phase Selection Method for Single-Phase-to-Ground Fault in Distribution System Based on Transient Current Similarity Measurement," Energies, MDPI, vol. 14(15), pages 1-19, August.
    2. Wenquan Shao & Jie Bai & Yuan Cheng & Zhihua Zhang & Ning Li, 2019. "Research on a Faulty Line Selection Method Based on the Zero-Sequence Disturbance Power of Resonant Grounded Distribution Networks," Energies, MDPI, vol. 12(5), pages 1-18, March.
    3. Hamid Mirshekali & Rahman Dashti & Karsten Handrup & Hamid Reza Shaker, 2021. "Real Fault Location in a Distribution Network Using Smart Feeder Meter Data," Energies, MDPI, vol. 14(11), pages 1-16, June.
    Full references (including those not matched with items on IDEAS)

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