Real-time simulation of electric system has been widely used in electric power system industries for more than 20 years. The uniqueness of the real-time simulation lies in the fact that the simulator can simulate the subject, an electric power system, in real time. Therefore, the simulation can be interconnected to an external device and provide the stimuli to the device in real time, which is vital to conduct the evaluation of the device. Currently, these simulation techniques are well established in the application areas such as protective relay testing of the electric power systems. With a very small size of time step in the range of 1-3uS, the simulation capability can address the issues associated with power electronics application in the electrified railway systems as well.
This paper presents the application of the real-time simulation in an electrified railway systems. A simple AC feeding system in conjunction with an electric traction system is a locomotive is modeled and simulated in real time. The simulation results present the effectiveness and possibility of the simulation technique in electric railway system studies.
In Kwon Park, Byeong-Gon Lee, and Joorak Kim, "Real time simulation of electric railway systems using RTDS," in Railway Engineering2017, Edinburgh, UK, 2017.