Interfstud electromagnetic interference software: An accurate evaluation of current distribution in soil and in underground pipelines

Abstract

A user friendly software application was developed to study the electromagnetic interference problem between high voltage power lines and underground metallic pipelines. The dedicated developed InterfStud software was based also on the development of the magnetic vector potential and current distribution within the soil formulas. The best way to investigate the soil behavior as a conducting media is to determine the current distribution within the soil. New analytical formulas for the induced magnetic vector potential and current distribution in soil are derived. The determined formulas contain semi-infinite integral terms which will be evaluated. We might seek approximations of the semi-infinite integrals by replacing an exponential or algebraic function, the objective being to permit analytic integration. Since there is no good systematic method for making these replacements, their success depends directly on the intuition and ingenuity, taking into account that in practice the integrand has limited accuracy.