Abstract

This paper describes the propagation characteristics of switchingsurge wavefronts generated by energizing, or ultrahigh-speed re-energizing, EHV (extra-high-voltage) transmission lines of intermediate length. The description is supported by field test oscillograms recorded during the past 2 years on the American Electric Power System's 345-kv network as part of a comprehensive switching-surge investigation conducted jointly by the American Electric Power Service Corporation. A new analytical method is formulated to verify field test performance.

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