DC ELECTRIC RAILWAY LOADFLOW ALGORITHM CONSIDERING MOVEMENT OF ELECTRIC VEHICLES

摘要

This paper is about loadflow algorithm considering movement of electric railway vehicle. The electric railway system is peculiar power system of which the location and power of vehicle are variable. Especially, as the variance of power induces huge fluctuation of catenary voltage as severe as the electric devices may be stressed, stabilization scheme is needed to be devised. To derive the accurate results, output data, location and power, from train performance simulator (TPS) are used. Calculating the rail potential, accuracy enhancement for railway vehicle voltage is attempted. Korean Seoul Metro Line 2 is selected for the test system and simulated to verify the substation voltage is often out of permissible voltage range.