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Thermal Degradation In Composite Insulation Due To Corona Discharges

Abstract Composite insulators on overhead lines are frequently subjected to corona discharges due to increased electric field intensities under various conditions. These discharges can cause localized heating on the surface and affect the hydrophobicity of the insulator. A study has been undertaken to quantify and evaluate the thermal degradation that composite insulation is subjected to from corona discharges. This has been conducted primarily at the power frequency (60 Hz) and at the low frequency range (37 kHz). Point to plane corona discharge experiments have been performed in the laboratory at both the frequencies and varying levels of thermal degradation has been observed. The amplitude and the frequency of current spikes have bee... (more)
Created Date 2010
Contributor Sangaraju Venkateshwara, Pradeep Varma (Author) / Gorur, Ravi S (Advisor) / Farmer, Richard (Committee member) / Vittal, Vijay (Committee member) / Arizona State University (Publisher)
Subject Electrical Engineering / Energy / Engineering / Composite insulation / Corona / Degradation / non-ceramic / Partial discharges / Thermal
Type Masters Thesis
Extent 64 pages
Language English
Reuse Permissions All Rights Reserved
Note M.S. Electrical Engineering 2010
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis