Cooperative Control of Multi-Train for Energy Saving

With the development of urban railway network, energy consumption of metro trains is increasing. Considering traction energy consumption makes up half of total energy consumption. So how to reducetraction energy consumption is the key point of energy saving in metro system. In this paper, train movement between two consecutive stations is divided into two parts, i.e. inter-station running and stopping at station. For inter-station running, an algorithm based on predictive control theory is proposed for energy-saving. For train stopping at station, a coordinated control algorithm between two consecutive trains is developed to maximize the utilization rate of regenerative braking energy. Simulations on real line and train data show that the proposed algorithm performs better in comparison with the existing ATO control, and the energy saving rate reaches 12.24%. The proposed algorithm can be fed into ATO for energy saving and operating cost reduction.