Optimal Position of a Wayside Energy Storage Based on Power Loss Minimization in a Railway Station Platform

Electric power losses are wasteful energy in every system. There are plenty of researchers who proposed methods to reduce power losses. To achieve more efficient use of energy sources. This paper represents a method of finding the optimal position of a wayside energy storage attached to a passenger station platform. The test starts with collecting the regenerative braking energy acquired from an arriving train to the stopping platform. This braking energy is useful to accelerate a departing train apart from the station. If there is no train standing on the departing platform, the braking energy is rerouted and therefore is stored in a stationary energy storage device. The reuse of braking energy is free. However, it may be wasteful due to a relatively long leading current-carrying cables. To minimize the wasteful energy of the feeding cables, position of the stationary energy storage can be allocated to an appropriate location in such a way that the overall feeder losses are minimized.