Method for determining flashover performance of insulating rod for live-line work on 35kV and below lines at high altitude

The invention belongs to the technical field of live-line work maintenance, and specifically relates to a method for determining the flashover performance of an insulating rod for live-line work on 35kV and below lines at the high altitude. The method comprises the steps of determining altitude conditions, determining test equipment, carrying out a surface flashover test, determining breakdown discharge characteristics and analyzing the safety degree and hazard rate. According to the invention, a surface flashover test is conducted on voltage classes such as 35kV, 20kV and 10Kv in a high altitude area, and a line air gap breakdown discharge characteristic curve and a regression formula are confirmed through natural environment and indoor simulation environment data analysis. When live-linework is performed in the high altitude area, a safe distance of the effective length of the insulating rod for live-line work on 35kV and below lines at high altitude is determined through checking the discharge curve or reg