Optimization model of high-speed railway train rescheduling for over-zone feeding

Over-zone feeding is an emergency disposal in railway to make sure the trains run continuously when the traction substation breaks down. At present, study on rescheduling in over-zone feeding condition is rare. Train operation adjustment schemes include increase of headway and setting speed restrictions. To study the combination of two schemes which have the minimum impact on train operation, with the target of minimizing the carrying capacity loss, this paper established a train rescheduling model for over-zone feeding. Taking a rail network as the background, the benefits of the proposed model were demonstrated by numerical experiments based on CPLEX software. The carrying capacity and delay time for different train operation adjustment schemes were calculated. The best rescheduling scheme is the speed limit is 250 km/h and headway is 4～8 min. The results show that the impact of limiting speed on trains is greater than that of increasing headway. © 2021, Central South University Press. All rights reserved.