Based on the lightning overvoltage analysis model of transmission line

the absorbed discharging energy and lightning discharging current of line arresters on 35 kV transmission lines with and without shielding wires are analyzed by electromagnetic transient analysis program when the line surge arresters are applied to improve the lightning protection effect of transmission line.When the lightning respectively strikes on towers and transmission lines under varied conditions

such as different impulse grounding resistance and different lightning current

the lightning discharging current of arrester and the absorbed lightning discharging energy are calculated

and the influence of grounding resistance and lightning current on them are discussed.At the same time

the absorbed discharging energy and lightning discharging current are compared for 35 kV transmission lines with and without shielding wires in order to conclude the influence of shielding wires.