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Simulation Study on the Effects of DC Electric Field on Insulator Surface Pollution Deposit

Author

Listed:
  • Dongdong Zhang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Zhijin Zhang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Xingliang Jiang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Lichun Shu

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Bin Wu

    (State Grid Chongqing Power Supply Company, Chongqing 400040, China)

Abstract

Energized insulator’s surface contamination is greatly affected by its electric field properties. However, few reports about the electric field influencing mechanism on the pollution deposition have been presented. In this paper, the coupling-physics model of a three-unit XP-160 insulator string was established, and the particles’ deposition process was simulated by using the finite element method. The effects of the electric field on the pollution particles’ motion were analyzed. Research results indicate that the closer to the insulator string, the larger the intersection angle θ between the electric force and its horizontal component. The main function of the electric field on insulator contamination is that it changes the pollution particles’ vertical moving speed, thus accelerating the particles’ deposition process. The particle capture coefficient ratio c k can be used to reflect the pollution degree discrepancy between DC-energized and non-energized insulators. In this paper the ratio c k of the DC-energized to non-energized condition is in the range of 1.04 to 1.98, very close to the field measurement results of the DC pollution ratio k .

Suggested Citation

  • Dongdong Zhang & Zhijin Zhang & Xingliang Jiang & Lichun Shu & Bin Wu, 2018. "Simulation Study on the Effects of DC Electric Field on Insulator Surface Pollution Deposit," Energies, MDPI, vol. 11(3), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:3:p:626-:d:135820
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    Citations

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    Cited by:

    1. Siyi Chen & Zhijin Zhang, 2020. "Dynamic Pollution Prediction Model of Insulators Based on Atmospheric Environmental Parameters," Energies, MDPI, vol. 13(12), pages 1-12, June.
    2. Xinhan Qiao & Zhijin Zhang & Xingliang Jiang & Tian Liang, 2019. "Influence of DC Electric Fields on Pollution of HVDC Composite Insulator Short Samples with Different Environmental Parameters," Energies, MDPI, vol. 12(12), pages 1-12, June.
    3. Jordi-Roger Riba & Francesca Capelli, 2018. "Analysis of Capacitance to Ground Formulas for Different High-Voltage Electrodes," Energies, MDPI, vol. 11(5), pages 1-19, April.

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