Traditional transmission lines

which prevent the insulator from flashover lightning overvoltage caused by injury

need insulator and lightning arrester parallel connection. But increased line load

increase circuit complexity and maintenance difficulty. In this study

a surge arrester with the performance of insulator was developed

and its characteristics were analyzed through calculation of electric field

analysis of mechanical forces

and electric test. Trial operation in Bao-Shou power transmission line verifies that this surge arrester can simplify the line’s facilities

facilitate the maintenance

and ensure safe and stable operation of the power grid.