Current status of research on lightning-induced overvoltages

The present understanding of lightning induced overvoltages (LIOs) is reviewed. Influences of lightning parameters (ground resistivity, lightning current peak amplitude and rise time, return-stroke velocity, geometry of lightning stroke, Basic impulse level etc.) in LIOs are examined with valuable judgments from current research literatures also; various models that have been used extensively to reduce the possible threat of induced overvoltages on power system lines are presented. The comparison between the theories and experimental results of these models are evaluated.

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