A study of defective characteristics on HVAC insulators for 33 kV distribution system

Proceedings of 2011 International Symposium on Electrical Insulating Materials Pub Date : 2011-09-01 DOI:10.1109/ISEIM.2011.6826357

Supakorn Nookuea, S. Chotigo, B. Pungsiri

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引用次数: 1

Abstract

This research compared the electrical characteristics of insulators for 33 kV distribution system of Provincial Electricity Authority of Thailand. The insulator used in this present work is suspension type, class 52-1. The breakdown voltage of defective insulators in dry and uncontaminated condition under AC voltage is compared. The insulators were arranged into 3 main formats: (1) three good insulators and one broken insulator (2) two good insulators and two broken insulators (3) one good insulator and three broken insulators. The 1st and 3rd formats were subdivided into four arrangements while the 2nd format was subdivided into 6 formats depending upon the position of good and broken insulators. Test results showed that the value of breakdown voltage depended upon the position of good and broken insulators. Also, the breakdown voltage of the 2nd format with the 5th subdivision, good insulators were at 1st (top) and 3rd positions while broken insulators were at 2nd and 4th positions, was highest. The insulator installation for testing and its atmospheric correction factor followed ANSI C29.1-1988.

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33kv配电系统暖通空调绝缘子缺陷特性研究

对泰国省电力局33 kV配电系统绝缘子的电气特性进行了比较研究。本工程中使用的绝缘子为悬浮式，52-1级。比较了交流电压作用下干燥和无污染条件下绝缘子的击穿电压。绝缘子主要布置为3种形式:(1)3个好绝缘子+ 1个破绝缘子;(2)2个好绝缘子+ 2个破绝缘子;(3)1个好绝缘子+ 3个破绝缘子。第一和第三种格式被细分为四种安排，而第二种格式被细分为6种格式，这取决于良好和破碎绝缘体的位置。试验结果表明，击穿电压的大小取决于良好绝缘子和破碎绝缘子的位置。此外，第5细分的第2格式的击穿电压最高，良好的绝缘子位于第1(顶部)和第3位置，而破碎的绝缘子位于第2和第4位置。测试用绝缘子安装及其大气校正系数遵循ANSI C29.1-1988。

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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Proceedings of 2011 International Symposium on Electrical Insulating Materials

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