Railway modelling for power quality analysis

Abstract

Power quality is increasingly important in the consideration of railway systems. Poor power quality affects the performance of trains and introduces problems for local distribution networks. This paper looks at improving modelling techniques to assess the power quality of a railway system. Modelling techniques used to simulate electrified railways are adapted to simulate power quality aspects with improved computational efficiency. The model developed is used to assess the voltage regulation and harmonic distortion of a rail system, and harmonic distortion on the local distribution network.