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A Study of Fast Front Transients of an HVDC Mixed Transmission Line Exposed to Bipolar Lightning Strokes

Author

Listed:
  • Ayesha Shakeel

    (HVDC Electric Power Lab, Department of Electronic Engineering, Hanyang University, Ansan 15588, Korea)

  • Kyu-Hoon Park

    (HVDC Electric Power Lab, Department of Electronic Engineering, Hanyang University, Ansan 15588, Korea)

  • Koo-Yong Shin

    (Korea Electric Power Research Institute (KEPRI), Daejeon 305380, Korea)

  • Bang-wook Lee

    (Department of Electronic Engineering, Hanyang University, Ansan 15588, Korea)

Abstract

Bipolar lightning strokes are associated with multiple polarity electrical discharge with no current intervals in between, making their behavior quite peculiar. This work presents a fast front analysis of a mixed high voltage direct current (HVDC) transmission link, evaluating the factors that influence the line transients due to shielding failures and backflashovers (BFOs), considering both overvoltage and repeated polarity reversal at the cable sending terminal. The research process includes a detailed modeling of a bipolar lightning stroke, frequency-dependent HVDC overhead, and underground transmission line sections. Noticeable findings include the occurrence of only a positive polarity insulator BFO for the adjacent and subsequent tower, despite the dual polarity of the lightning stroke with relatively small values for the lightning parameters. The influence of traveling waves on the insulator flashover performance of the line with varying parameters (such as the riser section length, the tower grounding impedance, and the location of the lightning stroke) is recorded and explained.

Suggested Citation

  • Ayesha Shakeel & Kyu-Hoon Park & Koo-Yong Shin & Bang-wook Lee, 2021. "A Study of Fast Front Transients of an HVDC Mixed Transmission Line Exposed to Bipolar Lightning Strokes," Energies, MDPI, vol. 14(10), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:10:p:2896-:d:556432
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    References listed on IDEAS

    as
    1. Mansoor Asif & Ho-Yun Lee & Kyu-Hoon Park & Ayesha Shakeel & Bang-Wook Lee, 2019. "Assessment of Overvoltage and Insulation Coordination in Mixed HVDC Transmission Lines Exposed to Lightning Strikes," Energies, MDPI, vol. 12(21), pages 1-24, November.
    2. Jakub Furgał, 2020. "Influence of Lightning Current Model on Simulations of Overvoltages in High Voltage Overhead Transmission Systems," Energies, MDPI, vol. 13(2), pages 1-10, January.
    Full references (including those not matched with items on IDEAS)

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