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Potential and electric field distribution in a ceramic disc insulator string with faulty insulators

Reddy, Subba B and Naik, Satish B and Kumar, Udaya and Satish, L (2012) Potential and electric field distribution in a ceramic disc insulator string with faulty insulators. In: 10th IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM), JUL 24-28, 2012 , Bangalore, INDIA.

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Official URL: http:/dx.doi.org/ 10.1109/ICPADM.2012.6318928

Abstract

Ceramic/Porcelain suspension disc insulators are widely used in power systems to provide electrical insulation and mechanically support for high-voltage transmission lines. These insulators are subjected to a variety of stresses, including mechanical, electrical and environmental. These stresses act in unison. The exact nature and magnitude of these stresses vary significantly and depends on insulator design, application and its location. Due to various reasons the insulator disc can lose its electrical insulation properties without any noticeable mechanical failure. Such a condition while difficult to recognize, can enhance the stress on remaining healthy insulator discs in the string further may lead to a flashover. To understand the stress enhancement due to faulty discs in a string, attempt has been made to simulate the potential and electric field profiles for various disc insulators presently used in the country. The results of potential and electric filed stress obtained for normal and strings with faulty insulator discs are presented.

Item Type: Conference Proceedings
Additional Information: Copyright for this article belongs to IEEE, NEW YORK, USA
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 11 Dec 2012 06:30
Last Modified: 11 Dec 2012 06:31
URI: http://eprints.iisc.ernet.in/id/eprint/45521

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