Analysis of Flashover Characteristics under Nanosecond Pulsed Coaxial Electric Field
W. L. Huang, J. F. Cui, G. S. Sun
DOI: 10.4236/jemaa.2009.12015   PDF    HTML     5,789 Downloads   10,087 Views  


Under nanosecond pulsed coaxial electric field, surface flashover voltage over the interfaces between nylon 1010 and transformer oil increases almost linearly with gap length, and the steeper rising edge of applied pulse, the higher flash-over voltage. Surface flashover properties are closely related to the electric field at the triple junctions of solid-liquid-electrode and the field gradient along the interfaces. Although the increased difference between inner and outer electrode radii will enhance electric field strength at the triple junctions and nonuniformity degree of potential distribution along interfaces, it reduces simultaneously terribly the surface field strength of coaxial inner electrode, so that flashover voltage doesn’t descend, but ascends almost linearly with gap length. The average flashover strength in coaxial electric field can be estimated by that in uniform electric field for large enough difference between inner and outer electrode radii, which is useful to practical engineering design for coaxial pulsed power apparatuses.

Share and Cite:

W. Huang, J. Cui and G. Sun, "Analysis of Flashover Characteristics under Nanosecond Pulsed Coaxial Electric Field," Journal of Electromagnetic Analysis and Applications, Vol. 1 No. 2, 2009, pp. 97-101. doi: 10.4236/jemaa.2009.12015.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] X. S. Liu, “High power pulsed technology,” Beijing: National Defence Industry Press, 2005.
[2] Z. Z. Zeng, “An introduction to practical pulsed power technology,” Xi’an: Shanxi Science and Technology Publishing House, 2003.
[3] J. C. Martin, “Nanosecond pulse techniques,” Proceedings of the IEEE, Vol. 80, No. 6, pp. 934–945, 1992.
[4] T. H. Martin, A. H. Guenther, and M. Kristiansen, “J. C. Martin on pulsed power,” New York: Plenum Press, 1996.
[5] M. Buttram, “Some future directions for repetitive pulsed power,” IEEE Transactions on Plasma Science, Vol. 30, No. 1, pp. 262–266, 2002.
[6] A. H. Sharbaugh, J. C. Devins, and S. J. Rzad, “Progress in the field of electric breakdown in dielectric liquids,” IEEE Transactions on Electronic Insulation, Vol. 13, No. 4, pp. 249–276, 1978.
[7] W. L. Huang, G. S. Sun, and P. Yan, “Overview of flashover properties over solid-liquid interfaces under nanosecond pulses,” High Voltage Engineering, Vol. 31, No. 9, pp. 50–52, 2005.
[8] N. G. Trinh, F. A. M. Rizk, and C. Vincent, “Electrostatic-field optimization of the profile of epoxy spaces for compressed SF6-insulated cables,” IEEE Transactions on Power Apparatus and Systems, Vol. 99, No. 6, pp. 2164– 2174, 1980.
[9] S. Menju, Y. Tsuchikawa, and N. Kobayashi, “Electric potential and field of conical insulators for SF6 metal-clad switchgear,” IEEE Summer Meeting and International Symposium on High Power Testing, Portland, USA, pp. 390–398, 1971.
[10] Q. C. Liu, “Electrical insulation structural design principle (the lower volume),” Beijing: China Machine Press, 1987.
[11] J. C. Su, G. Z. Liu, Z. J. Ding, Y. Z. Ding, J. G. Yu, X. X. Song, et al., “Experiment and applications of SOS-based pulsed power,” High Power Laser & Particle Beams, Vol. 17, No. 8, pp. 1195–1200, 2005.
[12] J. C. Su, G. Z. Liu, Y. Z. Ding, Z. J. Ding, S. Qiu, Z. M. Song, et al., “Nanosecond SOS-based pulse generator SPG200,” 3rd International Symposium on Pulsed Power & Plasma Application, Mianyang, China, pp. 258–261, 2002.
[13] W. L. Huang, G. S. Sun, P. Yan, J. Wang, and G. J. Li, “Flashover properties of polymethyl methacrylate and nylon in coaxial electric field under nanosecond pulse voltage,” High Power Laser & Particle Beams, Vol. 18, No. 7, pp. 1229–1232, 2006.
[14] W. L. Huang, G. S. Sun, P. Yan, and J. Q. Ren, “Simulation of brim-effects of coaxial electrode varying with the diameter of internal electrode,” Transactions of China Electrotechnical Society, Vol. 21, No. 4, pp. 117–121, 2006.
[15] S. J. Rzad, J. C. Devins, and R. J. Schwabe, “The influence of a DC bias on streamers produced by step voltages in transformer oil and over solid/liquid interfaces,” IEEE Transactions on Electrical Insulation, Vol. 18, No. 1, pp. 1–10, 1983.
[16] L. Kebbabi and A. Beroual, “Influence of the properties of materials and the hydrostatic pressure on creepage discharge characteristics over solid/liquid interfaces,” 2003 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Albuquerque, USA, pp. 293–296, 2003.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.