Electric Power Substation Reliability Assessment for Light Railway DC Traction System

The main objective of this paper is to present a reliability evaluation method for the electric power substation of the Light Rail DC Traction Electrification System. The Light Rail Systems which is a special part of rail systems will be introduced, power traction of Light Rail Systems (LRS) will be explained and the reliability analysis of power traction in LRS will be performed. In this study, the structural reliability model of the power substation is developed on physical-based modeling of the components and system configuration. This study only concentrates on determining the reliability of a substation, not including system-wide effects. The reliability analysis is carried out individually for each unit that is composing the system, and then the total reliability of the system is determined according to various scenarios. The reliability analysis of power supply to the traction is performed for a real system named Habipler- Topkapi LRS which is located in Istanbul, Turkey.