Abstract
When an electric fault occurs, a strong magnetic force on power lines may bring them in close proximity, or in contact with one another, causing a subsequent fault. Being able to analyze and then to predict the probability of the subsequent fault will be beneficial to utilities. In this paper, we present an analysis of the magnetically induced subsequent fault of three-phase overhead power lines. A computer simulation is developed for this analysis, based on electromagnetic theory and fundamental laws of mechanics as well as numerical techniques. This analysis is applicable for various types of faults and different kinds of power line constructions. Numerical results are presented and analyzed. The accuracy of the numerical results is validated by showing that they well satisfy the energy conservation law.
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