支柱瓷绝缘子的带电检测方法

摘要

现有的检测技术无法实现对支柱瓷绝缘子进行带电检测.采用振动声学法获得试样绝缘子的固有频率,以此判断支柱绝缘子的承载能力.试验证明,当试样固有频率高于和低于机械状况良好的绝缘子振动驻波频率(4.5 kHz)时都表明在法兰区域存在缺陷.该检测方法不仅实现了支柱绝缘子的带电检测,且检测方法可靠.%There is no availble live detection technology for porcelain post insulator today.In this article, we get natural frequency of insulator by the vibration sound research method in order to judge the carrying capacity of insulator, and take comparison of natural frequency between tested specimen and insulator with good condition by Vibro-acoustic technology.And through a large number of experiments, this detection technology is found viable.Above or below the natural frequency(4.5 kHz) indicates the presence of defects in the flange region.The detection method not only makes live detection available, but also extends the future work easily.