A simulation study of installation locations and capacity of regenerative absorption inverters in DC 1500 V electric railways system

The paper presents the determination scheme of the power capacity and installation location for regenerative inverters in a DC 1500 V electric railway system. Using Train Performance Simulation (TPS) and Power Flow Simulation (PFS) software, loss ratios of the regenerative power in a subway line and root-mean-square values of regenerative power are calculated for each substation. According to varying the number of regenerative inverters installed, these values are calculated repeatedly and allow determining the suitable installation number, location and power capacity of regenerative inverters in a subway line. To confirm this determination scheme, the simulation results of TPS and PFS of a Seoul subway line are applied.