Abstract
This paper analyses the magnitudes of induced voltages and their waveshapes due to different components of lightning electric field on a 33 kV, 3 φ power distribution line. The effect of finite conductivity of ground on the components of lightning electric field and hence on the induced voltages are studied. It is observed that the initial negative pulse in the induced voltage at the overhead line termination when finite ground conductivity is assumed is due to the large radiation component of the horizontal electric field. It is also observed that the total induced voltage gets reduced at line terminations whereas it is increased at line mid point when finite conductivity for ground is assumed for the lightning striking location considered.
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