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Leakage current analysis, FFT calculation and electric field distribution under water droplet on polluted silicon rubber insulator

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Abstract

In this paper, an experimental test results on silicon rubber insulator with voltage of 20 kV have been shown. Artificial aging on insulator has been done using solid layer methods according to IEC60507 standard. Leakage current waveforms during the experimental studies were measured. Normally Fast Fourier transform method used to find the harmonic spectrum in the leakage currents. Three states of analysis are considered. In the first state, it is done with nominal voltage and without arc. In the second state, it is done in the presence of dry band arcing and corona discharge and in the last case, continuous arc is investigated and in each state harmonic analysis is performed. It is observed that in second state the third harmonic components increase rather than in the first state. Artificial aging on insulator has been done using solid layer methods according to IEC60507 standard. Leakage current waveforms during the experimental studies were measured. Eventually, to distinguishing pollution intensity, equivalent salt deposit density calculations are implemented. At the end, finite element method has been investigated for the results of water droplets existing on the surface of silicone rubber materials and electric field distribution along the surface of insulator.

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Authors and Affiliations

  1. School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran

    Iman Ahmadi Joneidi, Amir Abbas Shayegani Akmal & Hossein Mohseni

  2. Department of Electrical Engineering, Jouybar Branch, Islamic Azad University, Jouybar, Iran

    Mehrdad Ahmadi Kamarposhti

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  1. Iman Ahmadi Joneidi
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  2. Mehrdad Ahmadi Kamarposhti
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  3. Amir Abbas Shayegani Akmal
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  4. Hossein Mohseni
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Correspondence to Mehrdad Ahmadi Kamarposhti.

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Joneidi, I.A., Kamarposhti, M.A., Shayegani Akmal, A.A. et al. Leakage current analysis, FFT calculation and electric field distribution under water droplet on polluted silicon rubber insulator. Electr Eng 95, 315–323 (2013). https://doi.org/10.1007/s00202-012-0260-8

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  • DOI: https://doi.org/10.1007/s00202-012-0260-8

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