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Faulty Feeder Detection Method Based on VMD–FFT and Pearson Correlation Coefficient of Non-Power Frequency Component in Resonant Grounded Systems

Author

Listed:
  • Kewen Wei

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Jing Zhang

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Yu He

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

  • Gang Yao

    (Guizhou Power Grid Company, Guiyang 550001, China)

  • Yikun Zhang

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

Abstract

Through analyzing the transient components and transient characteristics in transient zero-sequence current (TZSC), a novel fault feeder detection method based on the transient correlation of non-power frequency components (NPFCs) for the resonant grounded system is proposed. Firstly, using variational mode decomposition combined with fast Fourier transformation (VMD–FFT) to decompose the TZSC, by removing the power frequency components and noise signals, the transient NPFCs can be obtained. Secondly, to reflect the overall changing trend between faulty and healthy currents, the moving average filter is introduced to smooth the NPFCs; in this way, the fault transient features can be accurately revealed. Finally, the faulty feeder can be detected by comparing the threshold with the maximum difference value of comprehensive correlation coefficient of NPFCs. The detection results show that the proposed fault detection method can accurately select the faulty feeder; it is unaffected by fault resistances, fault phase angles, etc. Moreover, the detection method can resist noise interference.

Suggested Citation

  • Kewen Wei & Jing Zhang & Yu He & Gang Yao & Yikun Zhang, 2020. "Faulty Feeder Detection Method Based on VMD–FFT and Pearson Correlation Coefficient of Non-Power Frequency Component in Resonant Grounded Systems," Energies, MDPI, vol. 13(18), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:18:p:4724-:d:411881
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    References listed on IDEAS

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    1. 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.
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    Cited by:

    1. Rui Yang & Yingwen Chen & Yiqun Liu & Yuchen Feng & Jianwan Ji & Christina W. Y. Wong & Xin Miao & Yanhong Tang, 2023. "Government–business relations, environmental information transparency, and Hu-line-related factors in China," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 25(7), pages 7215-7238, July.

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