Abstract
The present work investigates the two dimensional, quasi stationary, electromagnetic field of a faulted power transmission line in the presence of a buried pipeline, of mitigation wires and of a multi-layer ground. The related diffusion equation has been numerically solved by using the Finite Element Method (FEM). Using FEM results and Faraday's law, magnetic vector potential, as well as the voltages induced across the buried pipeline and remote earth, are calculated. Parametric analysis has shown that there is a significant influence of the depth and resistivity of the first ground layer, of the resistivities of the different ground layers and of the configuration of mitigation wires on the electromagnetic field and on the voltages induced across the buried pipeline and remote earth.
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