The Flashover Phenomena due to Water Drops on Insulating Surface under DC Electric Field

Abstract:

This paper presents the flashover between the electrodes conducted the current by the water drop on insulating surfaces. It causes ageing to the insulator and leads to deterioration when the insulator is used for over years. In the experiments, epoxy resin with the water drop is tested by using direct current until flashover of 70 kV. Besides that, the effect of the water volume, the number of the water drop and the water types - tap and aqua water on flashover are investigated. The flashover of tap water grows faster when increases the volume of water drop. The flashover of aqua water does not depend on the volume of water drop. The deformation and elongate of water drop is in the direction of electric field line. The results lead to protect the damage of insulator caused by the humidity and the loss of their efficiency insulators.

• Periodical: Advanced Materials Research (Volumes 931-932)
• Pages: 962-967
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.931-932.962
• Online since: May 2014
• Authors: Sackthavy Chandavong, Kittipong Tonmitra*, Arkom Kaewrawang
• Keywords: Electric Field Stress, Epoxy Resin (ER), Flashover Phenomena, Water Drop

References

[1] K.L. Chrzan, Performance of hydrophobic epoxy insulators under industrial pollution, University of Ljubljana, 27-31 Aug, 2007, pp.1-4.

[2] Kuffel, E. Zaengl, W.S. Kuffel, High voltage Engineering: Fundamentals, 2nd edition, Newnes, Oxford, England, (2000).

DOI: 10.1016/b978-075063634-6/50002-2

[3] T. Braunsberger, A. Dzivbek, M. Kurrat, Water drop corona on hydrophobic epoxy, International conference on solid dielectrics, 5-9 July, 2004, pp.1-4.

DOI: 10.1109/icsd.2004.1350385

[4] W. Yan, B.T. Phung, Z.J. Han, Surface insulation performance of epoxy resin/silica Nanocomposite Material, Electrical insulation conference, 5-8 June, 2011, pp.235-239.

DOI: 10.1109/eic.2011.5996153

[5] A. Syakur, H. Berahim, Tumiran, Rochmadi, Hydrophobic contact angle and surface degradation of epoxy resin compound with silicon rubber and silica, Electrical and Electronic Engineering, 2 May, 2012, pp.284-291.

DOI: 10.1109/iceei.2011.6021661

[6] Y. Cheng , X. Zhao, M.G. Danikas, D.D. Christantoni, P. zairis, A study of the behavior of water droplets under the influence of uniform electric field in epoxy resin samples, Journal of Electrical engineering, vol. 63, 2012, pp.196-200.

DOI: 10.2478/v10187-012-0029-3

[7] V. Fachbereich, Z. Erlangung, The behavior of water drops on insulating surfaces stressed by electric field, Ph.D. thesis, 23 Nov, (2009).

[8] S.S. Dessouky and K.A. Helal, Influence of water contents on the electrical behavior of polymeric insulator, OJPEE, vol. 2, pp.161-167.

[9] J. Ndoumbe, A. Beroual and A. Moukengue Imano, Behavior of water droplets on insulator surfaces submitted to DC voltage - Coalescence, IEEE, 2012, pp.725-728.

DOI: 10.1109/ceidp.2012.6378883