Guide to procedures for estimating the lightning performance of transmission lines

An updated version of this Technical Brochure is available on this page, including the TB 839.

The primary aim of the guide is apply modern knowledge about various aspects of the lightning discharge - including the striking process, the discharge parameters and the overvoltage disturbance mechanism, as well as the related transmission line overvoltage response - in a set of practical engineering procedures, whereby the expected lightning performance of a line may be estimated with a reasonable degree of confidence.