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Study on the Gas-Insulated Line Equivalent Model and Simplified Model

Author

Listed:
  • Botong Li

    (The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Tianfeng Gu

    (The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Bin Li

    (The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Yunke Zhang

    (The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

Abstract

The gas-insulated line (GIL) is one technical solution to allow the transmission of electricity underground at a high voltage level, yet its equivalent model is quite complicated. Based on an examination of the geometrical structure of the GIL and the way the metallic enclosure is grounded, this paper analyzed the electromagnetic and electrostatic coupling among the inner conductors and the metallic enclosures of the three phases. Then, the paper proposes a modeling method for the widely-used short-distance GIL based on the PI-model (the model consisting of two lumped admittance at each terminal and a lumped impedance in between). The GIL parameters were later simplified with the coupling effect of the metallic enclosure considered, and a simplified PI-model was produced. Finally, the proposed PI-model and its simplified version were built on the Power Systems Computer Aided Design (PSCAD) platform, and their effectiveness verified by simulation results.

Suggested Citation

  • Botong Li & Tianfeng Gu & Bin Li & Yunke Zhang, 2017. "Study on the Gas-Insulated Line Equivalent Model and Simplified Model," Energies, MDPI, vol. 10(7), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:901-:d:103305
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    References listed on IDEAS

    as
    1. Roberto Benato & Sebastian Dambone Sessa & Fabio Guglielmi & Ertugrul Partal & Nasser Tleis, 2014. "Ground Return Current Behaviour in High Voltage Alternating Current Insulated Cables," Energies, MDPI, vol. 7(12), pages 1-16, December.
    2. Petar Sarajcev, 2011. "Numerical Analysis of the Magnetic Field of High-Current Busducts and GIL Systems," Energies, MDPI, vol. 4(12), pages 1-16, December.
    Full references (including those not matched with items on IDEAS)

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