The Investigation of Live Detection Method on Porcelain Post Insulator

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.