We developed a method to compute emergency train timetables that minimize the total energy consumption. This approach supports the movement of trains during emergencies to adjacent stations using stationary energy storage systems during power failures. Determining the order for initiating emergency operations with minimum energy consumption is difficult because the potential number of combinations increases in proportion to the factorial of the number of trains. Therefore, we developed a computation method for determining the order of initiating emergency operations based on simple equations. An evaluation of the proposed method confirmed that it obtained a result that matched the optimum solution obtained achieved using the brute-force method in shorter time than brute-force method.
Kimura et al. (Thu,) studied this question.