Finite Element Analysis of DC Traction System Stray Current Under Different Soil Conductivity

This paper compares stray current under different soil conductivity using the 3-D finite element method (FEM) concept. The system uses a simple geometric of the DC tram traction system for the solution. Result of stray current density compared with 3 types of soil under y-coordinate clayey wet soil stray current is higher than clayey dry soil and sand dry because of clayey wet soil more electrical conductivity.