Coupled electric–magnetic–thermal–mechanical modelling of busbars under short-circuit conditions

Gholamreza Kadkhodaei; Keyhan Sheshyekani; Mohsen Hamzeh

Coupled electric–magnetic–thermal–mechanical modelling of busbars under short-circuit conditions

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Author(s): Gholamreza Kadkhodaei ¹ ; Keyhan Sheshyekani ¹ ; Mohsen Hamzeh ¹
- Affiliations: 1: Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran 1983963113, Iran
Source: Volume 10, Issue 4, 10 March 2016, p. 955 – 963
DOI: 10.1049/iet-gtd.2015.0706 , Print ISSN 1751-8687, Online ISSN 1751-8695

Received 09/06/2015, Accepted 23/11/2015, Revised 08/10/2015, Published 10/03/2016

This study presents a coupled electric–magnetic–thermal–mechanical analysis of busbar systems under short-circuit currents. The analysis is carried out by making use of the finite-element method, which enables one to closely model two-way interactions among separate continuum physics. In contrast to previous works, which only consider the peak value of the short-circuit current, this method evaluates the magnetic force, the temperature rise, the mechanical displacement and their interactions over the simulation time of interest. The mechanical displacements are obtained by means of a three-dimensional analysis. It is found that the type of busbar support can markedly affect the conductor displacement during the short-circuit current. The temperature rise due to the short-circuit current flows is found to have a slight effect on the displacement of busbar conductors.

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Coupled electric–magnetic–thermal–mechanical modelling of busbars under short-circuit conditions

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