输电线路低零值绝缘子带电检测研究

Research on Live Detection of Low Zero Value Insulators in Transmission Lines

输电线路的绝缘子长期处于负荷作用下,其绝缘性能逐渐下降,因此文章提出输电线路低零值绝缘子带电检测方法。首先识别低零值绝缘子空间电场分布,获得低零值绝缘子的产热规律及共性特性,其次检测输电线路的劣化低零值绝缘子,保证电力系统的稳定性和可靠性。实验结果表明,输电线路低零值绝缘子带电检测方法能够有效检测出劣化绝缘子,并根据每一组绝缘子串的实际情况,确定了判断条件,大大提高了绝缘子串劣化的准确率。

Due to long-time load of the insulator in transmission lines,the insulation performance gradually decreases,so this paper proposes a method for the live detection of low zero value insulator in transmission lines.Firstly,the spatial electric field distribution of low zero value insulators is identified,the heat production law and common characteristics of low zero value insulators are obtained.Subsequently,the deteriorating low zero value insulators in transmission lines are detected to ensure the stability and reliability of electric power system.The experimental results show that,the live detection method of low zero value insulators in transmission lines can effectively detect the deteriorating insulators,and determine the judgment conditions according to the actual situation of each group of insulator strings,which greatly improves the accuracy of the deterioration of insulator strings.