Study on Leakage Current Waveforms of Porcelain Insulator due to Various Artificial Pollutants

Authors: Waluyo, Parouli M. Pakpahan, Suwarno, Maman A. Djauhari

Abstract:

This paper presents the experimental results of leakage current waveforms which appears on porcelain insulator surface due to existence of artificial pollutants. The tests have been done using the chemical compounds of NaCl, Na2SiO3, H2SO4, CaO, Na2SO4, KCl, Al2SO4, MgSO4, FeCl3, and TiO2. The insulator surface was coated with those compounds and dried. Then, it was tested in the chamber where the high voltage was applied. Using correspondence analysis, the result indicated that the fundamental harmonic of leakage current was very close to the applied voltage and third harmonic leakage current was close to the yielded leakage current amplitude. The first harmonic power was correlated to first harmonic amplitude of leakage current, and third harmonic power was close to third harmonic one. The chemical compounds of H2SO4 and Na2SiO3 affected to the power factor of around 70%. Both are the most conductive, due to the power factor drastically increase among the chemical compounds.

Keywords: Chemical compound, harmonic, porcelain insulator, leakage current.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1061206

References:

[1] M.A.R. Manjula Fernando, supervised by Gubanski, ÔÇÿPerformance for Non-ceramic Insulators in Tropical Environments-, PhD Dissertation, Department of Electric Power Engineering, Chalmers University of Technology, Goteborg-Sweden 1999.
[2] Wallace L. Vosloo, 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.
[3] Aryfianto, supervised by Djauhari, M.A., -Correspondence Analysis-, Bachelor Thesis, Department of Mathemathics, Bandung Institute of Technology, Bandung, Indonesia 2005.
[4] Anderson, T.W., -An Introduction to Multivariate Statistical Analysis-, Second Edition, John Wiley & Sons 1984, pp.18,489.
[5] Whittaker, J., -Graphical Models in Applied Multivariate Statistics-, John Wiley & Sons 1996, pp.17,48-51.
[6] Suwarno, ÔÇÿLeakage Current Waveforms of Outdoor Polymeric Insulators and Possibility of Application for Diagnostics of Insulator Conditions-, Journal of Elctrical Engineering & Technology, The Korean Institute of Electrical Engineering, Vol.1,No.1, 2006 pp.114-119.
[7] OriginLab Co., Origin V75 User's Manual, OriginLab Corporation, MA,USA. 2003.