ABSTRACT
This chapter discusses the effects of incident lightning scores on transmission line towers or ground wire, relying on experimental and theoretical research carried out by C. Gary, R. Garabedian, Z. Zhang, D. Cristescu, and R. Enache. Results of their research indicated that when a lightning surge impacts a tower or ground wire, the resulting overvoltage is identified in its having a considerably shorter fail than the induction lightning surge. Shielding failure due to insulation breakdown stress has been associated with the calculation of induced voltage at the strike point of lightning surge using a simple circuit model involving the lightning current channel surge impedance and the line surge impedance, which may change due to corona effect. The study conducted by Gary et al. relied on parametric representation through digital and analog simulation for the problem of predetermination of induced over-voltage due to a lightning stroke on a tower span between towers and ground wire.
