Flashover Phenomenon on 150kV Transmission Line Due to Direct Lightning Strike on the Ground Wire

This paper presented the effect of tower foot resistance to flashover. Transmission line, insulator, flashover, grounding, and lightning were simulated in ATP draw software. Resistance of tower foot was increase to certain value and simulate using 10kA, 1.2/50 μs lightning characteristic. The results shows that increaseing on tower foot resisting can caused flashover in e variety of lightning characteristic. Also simulation was conducted for several tower foot resistance increase. The simulation shows that it is not always higher tower foot resistance can caused flashover in diffrence rise time of lightning.