Fault Insulator Positioning System and Test Based on Traveling Wave Technology

Because insulators are in an outdoor environment all year round. Air pollutants are deposited on the surface of insulators and form contamination on the surface. Moreover, due to weather and acid-base environment, insulators may be damaged internally. In summary, pollution flashovers may occur, which will seriously affect the stable operation of the power grid. This paper analyzes the mechanism of insulator flashover, and early warning system based on insulation design, followed by field tests and analyzed based on field test results. The test results show that the insulation early warning system can be used for insulator warning; and the positioning accuracy can meet the site requirements of the transmission network.