An Evaluation of Downburst Wind Load on Power Transmission Technologies

Abstract

Transmission tower failures can result in power outages, which can have disastrous social and economic effects. Global transmission line failure investigations have shown that downbursts and tornadoes typically cause high intensity winds that cause transmission line breakdowns. Because downbursts produce long-lasting, intense wind occurrences, they pose the biggest threat. Numerous research works have looked into how these events might be applied to transmission line systems (TLS). Unfortunately, the search of transmission line fails under these kinds of loads has been made more difficult by the large ranges for the various downburst parameters and the diverse “representations of downburst wind speeds”, which differ from boundary layer wind profiles. The literature on TLS under downburst wind stresses is reviewed in this work. It investigates downburst wind loads, the structural behaviors of TLS under such stresses, and their modelling models. Static and dynamic analysis, as well as TLS modelling, are reviewed.