Prediction of Surface Degradation of Composite Insulators using PD Measurement in Cold Fog

Muhammad Majid Hussain, Shahab Farokhi, Scott McMeekin, Masoud Farzaneh

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddCyfraniad i gynhadleddadolygiad gan gymheiriaid


    In this paper, surface degradation detection and analysis was investigated for composite insulators under cold fog. A composite insulator was tested with different contamination levels under various environmental stresses. The surface degradation stresses considered were cold fog, surface resistance, contamination levels, as well as interior and exterior temperatures on insulator surface. Characteristics of partial discharge and discharge current of surface discharge were studied to determine the effects of dense cold fog on the surface degradation of composite insulators for different contamination levels. AC high voltage was used for the tests. Wavelet transform analysis at different decomposition levels was carried out to recover the discharge signals from surface leakage current signals. The internal temperature of the insulator is directly related to the severity of electric discharges on its surface. The interior temperature was measured by heat propagation tests. Thermal imaging camera was used to determine the exterior temperature of the insulator. The results showed that the surface discharge signals are strongly correlated with the contamination level, water conductivity and significant damage on the insulator surface caused by some of the imposed degradation stresses.
    Iaith wreiddiolSaesneg
    TeitlProceedings of the 1st IEEE International Conference on Dielectrics
    Is-deitl3-7 July 2016 Montpellier France
    CyhoeddwrInstitute of Electrical and Electronics Engineers
    Nifer y tudalennau4
    ISBN (Electronig)978-1-5090-2802-3
    Dynodwyr Gwrthrych Digidol (DOIs)
    StatwsCyhoeddwyd - 4 Gorff 2016
    Digwyddiad1st IEEE International Conference on Dieletrics
    - Montpellier, Ffrainc
    Hyd: 3 Jul 20167 Jul 2016


    Cynhadledd1st IEEE International Conference on Dieletrics
    Teitl crynoICD 2016

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