Single train movement modelling and simulation with rail potential consideration

In general, the study of the train movement simulation begins with learning a simple single-train movement modelling. To be more realistic and more complete, the model should be able to calculate the profile of rail potential while a train is moving since rail potential plays an important role in the design of electrified railway service and is not supposed to exceed the critical value. The single-train movement modelling is developed to include and evaluate rail potential using multi conductor system and power flow calculation is applied in this study by using the current injection methods (CIM). The algorithm of the train movement with the gradient profile added and power flow calculation is created and implemented in MATLAB/M-file adopting Bangkok Transit System (BTS) - Sky Train Sukhumvit Line as a case study. It is expected to show the effectiveness of the proposed single-train movement modelling to evaluate rail potential, energy demand at substation, power losses and the voltage profile of the train during the movement of the train.