Combine the line and the 1 000 k V substation

considering the influence of different factors of the distance between the lightning strike point and the substation

the different amplitude of lightning current on the lightning strike point

tower grounding resistance

EMTP-ATP is used to conduct the simulation research about the 1 000 k V lightning invasion wave over-voltage. The research has shown that the different lightning point

the different amplitude of lightning current and the different tower grounding resistance will produce great influence on over-voltage amplitude on each equipment in the transformer substation. It is proved that lightning arrester is useful

under the premise of installing lightning arrester before the equipment

it is more effectively to reduce the lightning over-voltage while the bus with a group of arrester. Finally

it puts forward that installing a inductor before the arrest and the equipment to suppress lightning invasion wave steepness. To analyze value of the inductor from the angle of engineering economy that can provide certain reference for engineering.