Influence of Scintillations on the Surface Degradation of Polymeric Insulators

Verma, Alok Ranjan and Reddy, Subba B (2017) Influence of Scintillations on the Surface Degradation of Polymeric Insulators. In: IEEE International Conference on Industrial and Information Systems (ICIIS), DEC 15-16, 2017, Univ Peradeniya,Fac Engn, Peradeniya, SRI LANKA, pp. 430-434.

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Abstract

This paper presents the experimental investigations conducted on the polymeric insulators used in high voltage transmission lines. The polymeric/composite insulators being open to atmosphere are subjected to environmental stresses resulting in insulator surface discharges involving surface scintillations, dry band arcing and partial arcs. To study surface activity on polymeric insulators a rotating wheel and dip test arrangement as per IEC is employed to compare effect of different environmental stresses that involves normal and acidic rain conditions. Long term experimental investigations reveal the effect of acidic environment to be severe as compared to normal contaminant condition. It is observed that scintillations or partial arcs, formation of dry/wet bands over the surface play a vital role in the formation of severe tracking and material erosion on the samples. The leakage current (LC) is monitored at regular intervals and analyzed. Further, physicochemical analyses are carried out on treated samples for better understanding of the surface morphological changes.

Item Type:	Conference Proceedings
Series.:	International Conference on Industrial and Information Systems
Publisher:	IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Additional Information:	Copy right for the article belong to IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	04 Apr 2018 18:50
Last Modified:	04 Apr 2018 18:50
URI:	http://eprints.iisc.ac.in/id/eprint/59485

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