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A Numerical Study on the Decomposition and Diffusion Characteristics of SF 6 in Gas-Insulated Switchgear with Consideration of the Temperature Rising Effect

Author

Listed:
  • Chenglong Jia

    (College of Electrical Engineering, Shanghai University of Electric Power, Shanghai, No. 2588, Changyang Road, Shanghai 200090, China)

  • Wenbin Zhao

    (College of Electrical Engineering, Shanghai University of Electric Power, Shanghai, No. 2588, Changyang Road, Shanghai 200090, China)

  • Yong Zhu

    (Hefei Power Supply Company, No. 133, Susong Road, Hefei 230000, China)

  • Wu Lu

    (College of Electrical Engineering, Shanghai University of Electric Power, Shanghai, No. 2588, Changyang Road, Shanghai 200090, China)

  • Zhong Tang

    (College of Electrical Engineering, Shanghai University of Electric Power, Shanghai, No. 2588, Changyang Road, Shanghai 200090, China)

Abstract

The optimized concentration of SF 6 gas is the key to maintaining a good insulation performance by GIS equipment. The precise measurements of the SF 6 concentration and decomposition byproducts could be used to indicate the remaining GIS insulation level during long-term operations. In this paper, a finite-element simulation model was created to investigate the SF 6 gas decomposition and diffusion dynamics. A theoretical analysis and simulation of the overheating fault, i.e., the contact between the GIS disconnect switches, were carried out, followed by an estimation of the SF 6 decomposition and diffusion characteristics caused by the local heating faults, based on the calculated flow velocity field and temperature field.

Suggested Citation

  • Chenglong Jia & Wenbin Zhao & Yong Zhu & Wu Lu & Zhong Tang, 2022. "A Numerical Study on the Decomposition and Diffusion Characteristics of SF 6 in Gas-Insulated Switchgear with Consideration of the Temperature Rising Effect," Energies, MDPI, vol. 15(21), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:7834-:d:950502
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    References listed on IDEAS

    as
    1. Hamed H. Saber & David W. Yarbrough, 2021. "Advanced Modeling of Enclosed Airspaces to Determine Thermal Resistance for Building Applications," Energies, MDPI, vol. 14(22), pages 1-36, November.
    2. Ju Tang & Xu Yang & Dong Yang & Qiang Yao & Yulong Miao & Chaohai Zhang & Fuping Zeng, 2017. "Using SF 6 Decomposed Component Analysis for the Diagnosis of Partial Discharge Severity Initiated by Free Metal Particle Defect," Energies, MDPI, vol. 10(8), pages 1-17, August.
    3. Sabine Moench & Robert Dittrich, 2022. "Influence of Natural Convection and Volume Change on Numerical Simulation of Phase Change Materials for Latent Heat Storage," Energies, MDPI, vol. 15(8), pages 1-11, April.
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    Cited by:

    1. Yuan Deng & Xianhao Fan & Hanhua Luo & Yao Wang & Keyan Wu & Fangwei Liang & Chuanyang Li, 2023. "Impact of Air Gap Defects on the Electrical and Mechanical Properties of a 320 kV Direct Current Gas Insulated Transmission Line Spacer," Energies, MDPI, vol. 16(10), pages 1-14, May.

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