Influence of the Topography in the Calculation of Lightning Induced Voltages on Overhead Lines
Résumé
Lightning has been an important cause of failure of electrical facilities. Its effects are counted as outage of transmission and distribution lines around the world [1][2]. In the case of transmission lines, the direct strikes to tower or ground wires cause back flashover on insulation chains [3][4]. On distribution networks the main affectation is due to indirect impacts that can induce voltages higher than the insulation level of this kind of lines. The high frequency of these impacts compared with the direct ones and the low insulation level of distribution lines are the principal reasons of outage [5][6].
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