A study to determine the preferred locations of inverting substation for light DC railways

This paper presents a study to locate inverting substations for the light DC railways in order to maximize the aggregated braking efficiency of the railway network. A metro line has been used in this study and it has been modeled using a railway simulator developed in MATLAB. One inverting substation unit has been installed through the metro line and its location is changed from one traction substation to another, while the corresponding aggregated braking efficiency of the metro line is calculated at each location. Consequently, the localization analysis is then repeated with more than one inverting substation until the maximum aggerated braking efficiency is achieved. Keywords— DC railway, electrical distribution network, soft open point, braking efficiency