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Impact of DC Voltage Enhancement on Partial Discharges in Medium Voltage Cables—An Empirical Study with Defects at Semicon-Dielectric Interface

Author

Listed:
  • Aditya Shekhar

    (Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
    Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands
    These authors contributed equally to this work.)

  • Xianyong Feng

    (Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
    These authors contributed equally to this work.)

  • Angelo Gattozzi

    (Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA)

  • Robert Hebner

    (Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA)

  • Douglas Wardell

    (Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA)

  • Shannon Strank

    (Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA)

  • Armando Rodrigo-Mor

    (Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands)

  • Laura Ramírez-Elizondo

    (Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands)

  • Pavol Bauer

    (Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands)

Abstract

A scientific consensus is emerging on the benefits of direct current (DC) distribution in medium voltage (MV) power systems of ships and cities. At least 50% space savings and increased power transfer capacity are estimated with enhanced voltage DC operation of electric cables. The goal of this research is to contribute to developing the empirical knowledge on the insulation performance in order to validate the feasibility of such anticipated gains of DC versus alternating current (AC), and to determine the comparative impact of different operational conditions from a component engineering point of view. The partial discharge (PD) activity in cables is measured under AC and DC conditions as an indicator of insulation performance. Specifically, PDs in defects at the semicon-insulation interface are studied in terms of inception voltage, repetition rate and discharge magnitude. Empirical understanding is drawn for operating voltage and frequency dependence of the discharge behavior in such voids in the range of 10 to 20 kV and 0 to 0.1 Hz, respectively. The change in PD activity with void evolution post temperature-induced ageing process is explored.

Suggested Citation

  • Aditya Shekhar & Xianyong Feng & Angelo Gattozzi & Robert Hebner & Douglas Wardell & Shannon Strank & Armando Rodrigo-Mor & Laura Ramírez-Elizondo & Pavol Bauer, 2017. "Impact of DC Voltage Enhancement on Partial Discharges in Medium Voltage Cables—An Empirical Study with Defects at Semicon-Dielectric Interface," Energies, MDPI, vol. 10(12), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:1968-:d:120424
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    Citations

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    Cited by:

    1. Huangjing Gu & Yongkang Zhang & Bin Shen & Ziqi Liu & Yunjie Zhou & Xiaodi Wang & Xinyang Zhu & Yalin Wang, 2023. "Improved Isothermal Relaxation Current Measurement Based on Isolated Circuit for Nondestructive Evaluation of High-Voltage Cable Insulation," Energies, MDPI, vol. 16(23), pages 1-18, December.
    2. Marek Florkowski, 2020. "Influence of Insulating Material Properties on Partial Discharges at DC Voltage," Energies, MDPI, vol. 13(17), pages 1-17, August.

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