Comprehensive Modeling to Allow Informed Calculation of DC Traction Systems’ Stray Current Levels

This study is directed toward furnishing stray current modeling on dc traction systems to cope with the variability of a number of influencing parameters. To this end, the archival value of this study is gained by virtue of two new modeling techniques. These new techniques, first, include a Monte-Carlo-based approach to take into account the variability of the dominant factors influencing the conductance per unit length between the track and the earth. Second, a simulation technique that can provide a more robust representation of the conductance per unit length between the track and the earth coupled with uniform and non-uniform soil models is presented in an attempt to comprehensively assess the levels of stray currents leaving a floating dc traction system.