Temperature Field Distribution Characteristics of Ceramic Insulator during Laser Cleaning

Pollution flashover accident seriously threatens the security and stability of power grid. It is very important to clean the contaminated insulator to avoid pollution flashover accident. In view of the shortcomings of the traditional cleaning methods, a novel method of 1064 nm pulse laser cleaning insulator contamination is proposed in this paper. The finite element simulation model of laser cleaning insulator contamination is established and the numerical simulation calculation is carried out. The distribution characteristics of temperature field in the process of laser cleaning are obtained by simulation. The results show that the temperature in the center of the laser spot is the highest. When the laser power is 50 W, the maximum temperature of the contamination layer reaches to 411 K. The temperature gradually decreases along the radial direction, and decreases to 312 K at the edge of the spot. The temperature decreases rapidly in the depth direction. The influence of laser power on the distribution of temperature field is analyzed and the maximum temperature of the contamination layer is linearly related to the laser power.