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A Cycle Voltage Measurement Method and Application in Grounding Grids Fault Location

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Listed:
  • Fan Yang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Yongan Wang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Manling Dong

    (State Grid Henan Electric Power Corporation Research Institute, Zhengzhou 450052, China)

  • Xiaokuo Kou

    (State Grid Henan Electric Power Corporation Research Institute, Zhengzhou 450052, China)

  • Degui Yao

    (State Grid Henan Electric Power Corporation Research Institute, Zhengzhou 450052, China)

  • Xing Li

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Bing Gao

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Irfan Ullah

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

Abstract

The corrosion of grounding grids can result in a grounding accident of a power system, and much attentions has been concentrated on the method used to detect a corrosion fault in a grounding grid, in which the methods of voltage measurement and magnetic field measurement are usually used. In this paper, a cycle voltage measurement method and L-curve regularization method are proposed to locate the faults in grounding grids. The L-curve method was used to select the appropriate regularization parameter, which can effectively balance the error and stability of the solution to the inverse problem. The uncertainty of the solution due to the ill-posed problem in the inverse problem has been well-solved. Experiments were conducted in a laboratory with two network types. In addition, a field experiment was carried out in a 110-kV substation. Both of the results showed that the method can effectively locate a branch fault with a single branch and multiple branches in the grounding grids.

Suggested Citation

  • Fan Yang & Yongan Wang & Manling Dong & Xiaokuo Kou & Degui Yao & Xing Li & Bing Gao & Irfan Ullah, 2017. "A Cycle Voltage Measurement Method and Application in Grounding Grids Fault Location," Energies, MDPI, vol. 10(11), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:11:p:1929-:d:119815
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    References listed on IDEAS

    as
    1. Gang Li & Bao-Jian Li & Xu-Guang Yu & Chun-Tian Cheng, 2015. "Echo State Network with Bayesian Regularization for Forecasting Short-Term Power Production of Small Hydropower Plants," Energies, MDPI, vol. 8(10), pages 1-14, October.
    2. Eduardo Faleiro & Gabriel Asensio & Jorge Moreno, 2017. "An Estimate of the Uncertainty in the Grounding Resistance of Electrodes Buried in Two-Layered Soils with Non-Flat Surface," Energies, MDPI, vol. 10(2), pages 1-10, February.
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    Cited by:

    1. Krzysztof Lowczowski & Jozef Lorenc & Andrzej Tomczewski & Zbigniew Nadolny & Jozef Zawodniak, 2020. "Monitoring of MV Cable Screens, Cable Joints and Earthing Systems Using Cable Screen Current Measurements," Energies, MDPI, vol. 13(13), pages 1-28, July.
    2. Aamir Qamar & Muhammad Umair & Fan Yang & Muhammad Uzair & Zeeshan Kaleem, 2018. "Derivative Method Based Orientation Detection of Substation Grounding Grid," Energies, MDPI, vol. 11(7), pages 1-15, July.
    3. Xing Li & Fan Yang & Julan Ming & Ammad Jadoon & Sheng Han, 2018. "Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography," Energies, MDPI, vol. 11(7), pages 1-13, July.

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