Improving the lightning protection of O.H.T.L in tropical areas with high resistivity soils through improving the ground systems

Abstract

The parallel continuous type of counterpoise wire is the best ground system currently, it is reduce the ground resistance less than 25 Ω in high resistivity of soil arriving 4450 Ωm with 400 m length. The created ground system types of proposed chem-counterpoise can be used in both homogenous and inhomogeneous soil that have soil resistivity arriving 10000 Ωm. The proposed chem-counterpoise devices will be used to reduce the risk of BFO rate, repeated outage and economic losses.