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Suppression of Metal Particles by Coating for a ±550 kV DC GIS

Author

Listed:
  • Hanhua Luo

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Duohu Gong

    (Xinjiang Electric Power Research Institute, State Grid, Urumqi 830011, China)

  • Shan Li

    (Xinjiang Electric Power Research Institute, State Grid, Urumqi 830011, China)

  • Zhongqiang Zhan

    (Xinjiang Electric Power Research Institute, State Grid, Urumqi 830011, China)

  • Niyaer Di

    (Xinjiang Electric Power Research Institute, State Grid, Urumqi 830011, China)

  • Dilyar Dolkun

    (Xinjiang Electric Power Research Institute, State Grid, Urumqi 830011, China)

  • Xianhao Fan

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Xiangdong Liu

    (Department of Electrical Engineering, Hebei University of Technology, Tianjin 300401, China)

Abstract

Coating the inner surface of grounded enclosures has been used to inhibit metal particle motion inside AC GIS for many years. However, for DC GIS, only fundamental research has been performed, while very few attempts have been made on real DC GIS. This paper reviews the basic research into the inhibition of metal particles by coating at DC. On this basis, based on a ±550 kV DC GIS busbar, an inhibition test of metal particle motion using coating was performed. Four types of metal particles were used as samples to verify the inhibitory effect of the grounded enclosure coating. The results showed that the coating has a very good inhibitory effect on block and powder metal particles on real GIS, and there are rarely any metal particles moving again under the rated DC voltage. However, for wire and flake metal particles, the effectiveness of the coating depends on the way the particle contacts the ground electrode when they are still, and ~30% of wire and flake metal particles can be inhibited. The conclusion of this paper is of guiding significance for the research and development of stable and reliable DC gas-insulated equipment.

Suggested Citation

  • Hanhua Luo & Duohu Gong & Shan Li & Zhongqiang Zhan & Niyaer Di & Dilyar Dolkun & Xianhao Fan & Xiangdong Liu, 2024. "Suppression of Metal Particles by Coating for a ±550 kV DC GIS," Energies, MDPI, vol. 17(22), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:22:p:5627-:d:1518071
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