Study on Discharge Current Phenomena of Epoxy Resin Insulator Specimen

Authors: Waluyo, Ngapuli I. Sinisuka, Suwarno, Maman A. Djauhari

Abstract:

This paper presents the experimental results of discharge current phenomena on various humidity, temperature, pressure and pollutant conditions of epoxy resin specimen. The leakage distance of specimen was 3 cm, that it was supplied by high voltage. The polluted condition was given with NaCl artificial pollutant. The conducted measurements were discharge current and applied voltage. The specimen was put in a hermetically sealed chamber, and the current waveforms were analyzed with FFT. The result indicated that on discharge condition, the fifth harmonics still had dominant, rather than third one. The third harmonics tent to be appeared on low pressure heavily polluted condition, and followed by high humidity heavily polluted condition. On the heavily polluted specimen, the peaks discharge current points would be high and more frequent. Nevertheless, the specimen still had capacitive property. Besides that, usually discharge current points were more frequent. The influence of low pressure was still dominant to be easier to discharge. The non-linear property would be appear explicitly on low pressure and heavily polluted condition.

Keywords: discharge current, third harmonic, fifth harmonic, epoxy resin, non-linear.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1057875

References:

[1] Boudissa, R., Djafri, S., Haddad, A. , Belaicha, R., Bearsch, R., Effect of Insulator Shape on Surface Discharges and Flashover under Polluted Condition, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 12, No.3, June 2005, pp. 429-437.
[2] Huang, Q., Karady, G.G., Shi, B., Tuominen, M., Study on Development of Dry Band on ADSS Fiber Optic Cable, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 12, No.3, June 2005.
[3] Amarh, F., Karady, G.G., Raji Sundararajan, Linear Stochastic Analysis of Polluted Insulator Leakage Current, IEEE Transaction on Power Delivery , Vol. 17, No. 4, October 2002, pp. 1063-1069.
[4] Kind, D., Karner, H., High-Voltage Insulation Technology, Friedr. Vieweg & Sohn Verlagsgessellschaft, mbH, Braunscheweig, 1985, pp. 57-61.
[5] Obenaus. F., 1935, "Die Uberschlagspnnung verschmutzter isolatoren", ETZ.,56, 369-370.
[6] Smaili, A., Mahi, D., Zegnini, B., Study of the Electrical Flashover of an Insulating Surface Polluted by an Alternating Current Discharge, www.emo.org.tr/ resimler/ ekler/ 0263dbb2fb8547_ek.pdf, access on October 2008.
[7] Jolly, D.C., Chu, S.T., Surface Electrical Breakdown of Tin-Oxide Coated Glass, Journal of Applied Physics, No. 50(10), 1979, pp. 6196- 6199.
[8] Vosloo, Wallace L., supervised by Holthhausen, -A Comparison of the Performance of High-Voltage Insulator Materials in a Severely Polluted Coastal Environment-, PhD Dissertation, Department of Electrical and Electronic Engineering, University of Stellenbosch, South Africa, March 2002, pp.9-10.
[9] Vosloo, W.L., Macey, R.E., Toureil, C. de, -The Practical Guide to Outdoor High Voltage Insulators-, Crown Publications CC., Johannesburg, South Africa, 2004, pp.36-37.
[10] Suwarno, ÔÇÿLeakage Current Waveforms of Outdoor Polymeric Insulators and Possibility of Application for Diagnostics of Insulator Conditions-, Journal of Electrical Engineering & Technology, The Korean Institute of Electrical Engineering, Vol.1,No.1, 2006, pp.114-119.
[11] OriginLab Co., ÔÇÿOrigin V75 User's Manual-, OriginLab Corporation, MA,USA, 2003, pp.601-611.