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Heating effects of short circuit current impulses on contacts and conductors

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3 Author(s)
Koller, L. ; Budapest Univ. of Technol. & Econ., Budapest ; Novak, B. ; Tevan, G.

Summary form only given. An analytical description combined with finite element calculations of the current displacement caused by short-circuit current impulses in one- and two dimensional conductor models is presented. It is shown that in many cases the Joule-integral used in the technical practice gives a false representation of the thermal stress in the conductors and contacts. A simplified method is given for determining the degree of current displacement caused by different current impulses, hence the non-uniformity of the losses and the heating within the conductors.

Published in:

Transmission and Distribution Conference and Exposition, 2008. T&D. IEEE/PES

Date of Conference:

21-24 April 2008