EFI Analysis of RTV coated 400kV Porcelain and Glass Insulators by Numerical Method

2020 IEEE International Conference on Advances and Developments in Electrical and Electronics Engineering (ICADEE) Pub Date : 2020-12-10 DOI:10.1109/ICADEE51157.2020.9368957

M. Rao, V. Chaitanya, B. Sravanthi

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Abstract

Insulators are one of the important components in electrical transmission system. There are various types of insulators based on their dielectric materials. Among them ceramic materials are popular and they are using since so many decades. The main drawback of these insulators is they cannot give better performance under severe polluted conditions. Now a day's severity of pollution is increasing in the atmosphere day by day. These severe pollutions will increase the electrical stresses on the insulator surface and degrade the dielectric material. Due to this flashover will occur rapidly. It will affect the reliability of power system. This problem will be minimized by providing RTV silicone (Room Temperature Vulcanizing Silicone) coating on the insulator surface. Due to its higher withstanding capability under pollutions electrical stresses on the insulator will be less. In this paper, Electric Field Intensity (EFI) is analyzed for 400kV ceramic insulators by numerical method. EFI results proved that insulator with RTV coating has very less electrical stresses.

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用数值方法分析RTV镀膜400kV瓷玻璃绝缘子的电喷效应

绝缘子是电力传输系统的重要部件之一。根据介电材料的不同，绝缘体有多种类型。其中陶瓷材料是很受欢迎的，它们已经使用了几十年了。这些绝缘体的主要缺点是它们不能在严重污染的条件下提供更好的性能。现在大气污染的严重程度与日俱增。这些严重的污染会增加绝缘体表面的电应力并使介电材料退化。因此，闪络会迅速发生。它将影响电力系统的可靠性。这个问题将通过在绝缘体表面提供RTV硅胶(室温硫化硅胶)涂层来最小化。由于其较高的抗污能力，绝缘子上的电应力较小。本文采用数值方法对400kV陶瓷绝缘子的电场强度进行了分析。电喷试验结果表明，RTV涂层绝缘子的电应力非常小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2020 IEEE International Conference on Advances and Developments in Electrical and Electronics Engineering (ICADEE)

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