Breakdown characteristics and optically visible discharge paths of surface flashover

Citation

Gomes, Chandima and Cooray, Vernon and Rahman, Mahbubur (2012) Breakdown characteristics and optically visible discharge paths of surface flashover. In: 2012 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT), 6-9 Oct. 2012, Universiti Tunku Abdul Rahman, Kuala Lumpur, Malaysia. (pp. 111-116).

Abstract

Characteristics of surface flashover in the presence of different dielectric materials have been investigated. Lightning voltage impulses (1.2/50 μs) have been applied to a rod-plane gap of 250 mm, bridged by cylindrical solid dielectrics with circular cross-section of 10 mm. The materials used are polythene, polymethyl methacrylate (PMMA), and polyvinyl chloride (PVC). The characteristics of breakdown are compared with those pertinent to a similar rod-plane air gap. In each case, 50% breakdown voltage was found for both polarities. Then for each material 10 impulses were applied at 100% breakdown voltage for each polarity. The results show that there are three different types of paths taken by the discharges; they are the discharges that leap out of the rod at the HV triple junction (type-A), those follow the surface for a certain length and then leap out of the surface (type-B) and those entirely follow the surface (type-C).

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Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.1109/STUDENT.2012.6408376
Publisher:	IEEE
Keywords:	Lightning impulse; Surface flashover; Optical path; Breakdown strength; Insulation
Depositing User:	Azian Edawati Zakaria
Date Deposited:	14 Sep 2015 03:25
Last Modified:	29 Jun 2020 01:24
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/STUDENT.2012.6408376
URI:	http://psasir.upm.edu.my/id/eprint/40506
Statistic Details:	View Download Statistic

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