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Surface Discharge Simulation Insf6andn2mixtures With A Plasmachemical Model

Author

Listed:
  • WENXIA SIMA

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

  • JIAN SHI

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

  • QING YANG

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

Abstract

SF6–N2mixtures are becoming the best alternative forSF6in electrical systems. Plasmachemical modeling and the results of a positive surface streamer are reported in this paper. The model exhibits excellent streamer transition from the gas gap to the insulator surface. The surface charge accumulations on the dielectric insulators are compared and discussed. Results showed that the density of negative ions is much larger than that of electrons in the surface streamer channel. The dominant${\rm SF}_{6}^-{$}and less pronounced${\rm SF}_{5}^-{$}constitute the main negative ions in the electronegative surface streamer because of the strong electron attachments toSF6molecules.

Suggested Citation

  • Wenxia Sima & Jian Shi & Qing Yang, 2014. "Surface Discharge Simulation Insf6andn2mixtures With A Plasmachemical Model," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 21(01), pages 1-9.
    • Handle: RePEc:wsi:srlxxx:v:21:y:2014:i:01:n:s0218625x14500103
    DOI: 10.1142/S0218625X14500103
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    Cited by:

    1. Binhai Fan & Yong Qian & Yiming Zang & Ze Li & Xiaoli Zhou, 2021. "Numerical Modelling of Positive Surface Discharges in C-C 4 F 8 /CF 3 I/N 2 Gas Mixture under Non-Uniform Field," Energies, MDPI, vol. 14(24), pages 1-17, December.

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