This paper studies the number of lightning strikes in the rocky area tower on the 150 kV Payakumbuh-Koto Panjang transmission line. The intensity of the lightning trip-out on the 150kV transmission line is very high, amounting to 66%. The results showed a positive correlation between lightning trip-outs and the tower-footing resistance in rocky areas. The significant cause of trip-out is back…
The number of lightning stroke on the tower of the 150 kV Koto Panjang-Payakumbuh transmission line located the rocky area has been observed. The high value of tower footing resistance indicates the occurrence of the back-flashover in the transmission line at intensity of 74%. The back-flashover occurrence is dominantly triggered by the tower footing resistance value. Also, the rate of back-fla…