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Experimental Analysis of Artificial Coal and Salt Contamination of Composite and Ceramic Insulators

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Abstract

Delivering electrical energy reliably, safely and efficiently over transmission and distribution lines mainly depends on the health condition of insulators. Contamination is formed on the surface of the insulators due to natural and manmade activities. Consequently, the performance of insulators greatly decreases. The current paper proposes a study on the behavior of 11 kV composite and ceramic insulators. Laboratory tests were performed on these insulators with artificial coal and salt contamination by dipping and spraying methods under dry and wet conditions. From the experimental results, under dry condition coal contamination shows very little impact on the surface conductivity and flashover strength, but under wet and wet-salt conditions surface conductivity is increased and flashover strength is decreased enormously, whereas composite insulators exhibit better withstand characteristics as compared to ceramic insulators.

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Authors and Affiliations

  1. Department of EEE, UCEK, JNTUK, Kakinada, 533003, India

    Bokka Sankara Ganesh & N. Sumathi

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  1. Bokka Sankara Ganesh
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  2. N. Sumathi
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Correspondence to Bokka Sankara Ganesh.

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Ganesh, B.S., Sumathi, N. Experimental Analysis of Artificial Coal and Salt Contamination of Composite and Ceramic Insulators. Trans Indian Inst Met (2023). https://doi.org/10.1007/s12666-023-03126-6

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