Shapes and amplitudes of the initial peaks of lightning-induced voltage in power lines over finitely conducting earth: Theory and comparison with experiment
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It is conclusively shown that lightning-induced voltages in power lines over finitely conducting earth can only be explained by considering the interaction of the horizontal field produced by the finitely conducting ground, with the conductors. The theory predicts narrow peaks of few microseconds width in the induced voltages, for particular positions of lightning with respect to the line. Wave propagation effects are found to be of considerable importance. To the extent allowed by the bandwidth of the measuring instruments used in this study, the prediction of the theory is confirmed.
[1] Ashok K. Agrawal,et al. Transient Response of Multiconductor Transmission Lines Excited by a Nonuniform Electromagnetic Field , 1980 .
[2] E. Philip Krider,et al. Submicrosecond risetimes in lightning return-stroke fields , 1980 .
[3] K. Norton. The Propagation of Radio Waves over the Surface of the Earth and in the Upper Atmosphere , 1936, Proceedings of the Institute of Radio Engineers.
[4] Vernon Cooray,et al. Effects of propagation on the rise times and the initial peaks of radiation fields from return strokes , 1983 .