Semnan University Press Journal of Modeling and Simulation in Electrical and Electronics Engineering 2821-0786 1 4 2022 02 01 Evaluation of Ground Systems Performance on Rail Potential and Stray Current in Tehran Railway System 43 49 6882 10.22075/mseee.2022.26996.1102 EN Ebrahim Zare Juybari Electrical Engineering Faculty, Imam Mohammad Bagher, Technical and Vocational University, Mazandaran, Iran Ahmad Gholami Electrical Engineering Faculty, University of Science and Technology, Tehran, Iran Journal Article 2022 04 25 DC Stray currents represent serious problems for any electrified railway system. This paper describes a complete simulation model for evaluating rail potential and stray current for the Tehran multi-train DC railway system based on different earthing systems. In the present paper, a complete analysis of the results is presented. The simulation results clearly indicate that earthing system arrangements and other parameters influence stray currents and rail potential. The simulation results show the performance of three ground system types: grounded, ungrounded, and diode-grounded systems on rail potential and stray current. https://mseee.semnan.ac.ir/article_6882_6630a61e262c32ecf3411daf82d8551e.pdf