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Modeling Flashover of AC Outdoor Insulators under Contaminated Conditions with Dry Band Formation and Arcing


Abstract This paper presents a theoretical model for evaluating flashover performance of insulators under contaminated conditions. The model introduces several new features when compared with existing models such as, the formation of dry bands, variations in insulator geometry and surface wettability. The electric field distribution obtained from software for 3-Dimensional models along with form factor are used to determine the dimensions of the dry bands and the onset of arcing. The model draws heavily from experimental measurements of flashover voltage and surface resistance under wet conditions of porcelain and composite insulators. The model illustrates the dominant role played by the insulator shape and housing material on the flashover perform... (more)
Created Date 2012
Contributor Bo, Lin (Author) / Gorur, Ravi (Advisor) / Vittal, Vijay (Committee member) / Farmer, Richard (Committee member) / Arizona State University (Publisher)
Subject Electrical engineering / composite insulators / contamination performance / EPDM / porcelain insulators / silicone rubber / surface hydrophobicity
Type Masters Thesis
Extent 65 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note M.S. Electrical Engineering 2012
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis