Integrated Optimization for Energy-saving Operation in Co-phase TPSS

With the increasing scarcity of energy, more and more researchers have begun focus on the field of energy-saving in railway system. A novel topology of traction substation integrated power flow controller (PFC) and hybrid energy storage system (HESS) based on co-phase power supply technology was studied in this paper to increase the utilization rate of regeneration braking energy (RBE) generated by train. And a bi-level optimization model considering the coordination effect of train trajectory optimization and HESS energy scheduling scheme was developed. Several cases studies have been proposed based on certain actual line to verify the effectiveness of this model. The obtained results show that this model effectively improves the utilization rate of RBE and reduces the electricity cost of traction power supply system (TPSS) by 28.02%.