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Mechanism and Characteristics of the Surface Flashover on the Laminated Solid Dielectric in N2/O2 Mixture Gas

N2/O2 혼합가스 중 적층된 고체유전체에 대한 연면방전의 메커니즘과 특성

Lim, Dong-Young;Choi, Eun-Hyeok;Choi, Sang-Tae;Bae, Sungwoo;Lee, Kwang-Sik;Choi, Byoung-Ju
임동영;최은혁;최상태;배성우;이광식;최병주

  • Received : 2015.05.11
  • Accepted : 2015.06.15
  • Published : 2015.08.31

Abstract

This paper presents the surface flashover mechanism of a laminated solid dielectric and describes the surface flashover characteristics with the inherent capacitance of the laminated solid dielectric in a $N_2/O_2$ mixture gas (8:2) under an quasi uniform field. It was found that the electron emission at a cathode and the high-local electric field region around an anode were important factors to reasonably describe the surface flashover mechanism. The surface flashover voltage by the mechanism decreased with the inherent capacitance increase of the laminated solid dielectric. In addition to the surface flashover mechanism and its characteristics, the surface flashover voltage equations as a function of the inherent capacitance were derived by considering a gas pressure used in future eco-friendly GIS and the factors influencing the surface flashover.

Keywords

Insulation;Inherent Capacitance;Insulation Technique;Solid Dielectric;Surface Flashover

References

  1. J. E. Foster, B. Sommers and S. Gucker, "Towards understanding Plasma Formation in Liquid Water via Single Bubble Studies", Jpn. J. Appl. Phys., Vol. 54, No.01AF05, pp. 1-8, 2015.
  2. H. J. Song, B. J. Chun and K. S. Lee, "Improvement of Ozone Yield by a Multi-Discharge Type Ozonizer Using Superposition of Silent Discharge Plasma", J. Korean Phys. Soc., Vol. 44, No. 5, pp. 1182-1188, 2004.
  3. T. Rokunohe, Y. Yagihashi, K. Aoyagi, T. Oomori and F. Endo, "Development of $SF_6$-Free 72.5 kV GIS", IEEE Trans. Power Deliv., Vol. 22, No. 3, pp. 1869-1876, 2007. https://doi.org/10.1109/TPWRD.2007.899273
  4. K. W. Wargner, "The Physical Nature of the Electrical Breakdown of Solid Dielectrics", AIEE Trans. Vol. 41, pp. 288-299, 1922.
  5. K. H. Stark and C. G. Garton, "Electric Strength of Irradiated Polythene", Nature, Vol. 176, pp. 1225-1226, 1955. https://doi.org/10.1038/1761225a0
  6. H. Frohlich, "On the Theory of Dielectric Breakdown in Solids", Proc. Roy. Soc., Vol. A-188, pp. 521-532, 1947.
  7. D. W. Watson, "Dielectric Breakdown of Perspex Electrets in Nonuniform Fields" IEEE Trans. Elec. Insul., Vol. EI-8, No. 1, pp. 6-9, 1973. https://doi.org/10.1109/TEI.1973.299236
  8. P. H. H. Fischer and K. W. Nissen, "The Short-Time Electric Breakdown Behavior of Polyethylene", IEEE Trans. Elec. Insul., Vol. EI-11, No. 2, pp. 37-40, 1976. https://doi.org/10.1109/TEI.1976.297947
  9. C. R. Li and T. S. Sudarshan, "Dielectric Surface Preflashover Processes in Vacuum", J. Appl. Phys., Vol. 76, No. 6, pp. 3313-3320, 1994. https://doi.org/10.1063/1.357453
  10. H. C. Miller, "Surface Flashover of Insulators", IEEE Trans. Electr. Insul., Vol. 24, No. 5, pp. 765-786, 1989. https://doi.org/10.1109/14.42158
  11. N. C. Jaitly and T. S. Sudarshan," DC Surface Flashover Mechanism along Solids in Vacuum based on a Collision-Ionization Model", J. Appl. Phys., Vol. 64, No. 7, pp. 3411-3418, 1988. https://doi.org/10.1063/1.341496
  12. J. R. Harris et al., "Multilayer High-Gradient Insulators", IEEE Trans. Dielectr. Electr. Insul., Vol. 14, No. 4, pp. 796-802, 2010.
  13. K. Kato, M. Kurimoto, H. Shumiya, H. Adachi, S. Sakuma and H. Okubo, "Application of Functionally Graded Material for Solid Insulator in Gaseous Insulation System", IEEE Trans. Dielectr. Electr. Insul., Vol. 13, No. 1, pp. 362-372, 2006. https://doi.org/10.1109/TDEI.2006.1624281
  14. M. Kurimoto, K. Kato, M. Hanai, Y. Hoshina, M. Takei and H. Okubo, "Application of Functionally Graded Material for Reducing Electric Field on Electrode and Spacer Interface", IEEE Trans. Dielectr. Electr. Insul. Vol. 17, No. 1, pp. 256-263, 2010. https://doi.org/10.1109/TDEI.2010.5412025
  15. G. J. Min, S. Bae, B. C. Kang and W. Z. Park, "Surface Discharge Characteristics Study on the Laminated Solid Insulator in Quasi-Uniform Electric Field with Dry Air", J. Electr. Eng. Technol., Vol. 10, No. 2, pp. 742-748, 2015.
  16. D. Y. Lim, H. R. Park, E. H. Choi and K. S. Lee, "Surface Discharge Characteristics of laminated Solid Insulator in $N_2$/ $O_2$ Mixture gas", J. KIIEE Annual Spring Conf., pp. 288-289, 2012.
  17. D. Y. Lim, H. R. Park, S. G. Park, S. T. Choi, W. Z. Park and K. S. Lee, "The Study to Improve Surface dielectric Strength of laminated Solid Dielectric in $N_2$/ $O_2$ Mixture gas", J. KIIEE Autumn Annual Conf., pp. 207-208, 2012.
  18. IEEJ (Ohm-sha), "Discharge Handbook", IEEJ Discharge Handbook Publication committee, Vol. 1, pp. 316-319, 1998.
  19. E. H. Choi, B. H. Koo, L. K. Kim and K. S. Lee, "Assess of Breakdown Characteristics about Environmentally Friendly Gases", Journal of KIIEE, Vol. 23, No. 5, pp. 96-100, 2009.
  20. H. Naruse, H. Saito, M. Sakaki, O. Yamamoto, "Flashover Mechanisms of Bridged Vacuum Gaps Based on Cathode Electric Field Measurement", IEEE Trans. Dielectr. Electr. Insul., Vol. 22, No. 1, pp. 597-603, 2015. https://doi.org/10.1109/TDEI.2014.004566
  21. K. Kato, H. Kato, T. Ishida and H. Okubo, "Influence of Surface Charges on Impulse Flashover Characteristics of Alumina Dielectrics in Vacuum", IEEE Trans. Dielectr. Electr. Insul., Vol. 16, No. 6, pp. 1710-1716, 2009. https://doi.org/10.1109/TDEI.2009.5361594
  22. H. C. Miller and R. J. Ney, "Gases Released by Surface Flashover of Insulators", J. Appl. Phys. Vol. 63, No. 3, pp. 668-673, 1988. https://doi.org/10.1063/1.340055