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Cascading collapse of transmission lines

journal contribution
posted on 16.05.2019, 00:00 by F Alminhana, Faris AlbermaniFaris Albermani, M Mason
The occurrence of cascades – that is, progressive failures – has been reported in the majority of the serious incidents involving transmission lines worldwide. During cascades, the failure of a line component overloads the structural system, triggering a failure propagation that can lead to the collapse of a considerable number of line supports. This paper provides an overview of the problem of transmission line (TL) cascades. Their classification, main mechanisms and usual protective and mitigation measures are described. Relevant technical literature is also reviewed. The use of a recently developed technique to obtain the non-linear response of multi-span line sections under progressive failure scenarios is detailed. Two case studies are investigated employing this method. The first assesses the effectiveness of a traditional anti-cascade load case, and the second examines the vulnerability of an existing 230 kV TL to longitudinal cascades. © 2018 ICE Publishing: All rights reserved.

Funding

Other

History

Volume

171

Issue

3

Start Page

115

End Page

132

Number of Pages

18

eISSN

1755-0785

ISSN

1755-0777

Publisher

I C E Publishing, UK

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Laboratório de Dinâmica Estrutural e Confiabilidade, Brazil; University of Queensland

Era Eligible

Yes

Journal

Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics

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