Research on Control Strategy of Railway Traction Power Supply System with PV Integration

To promote energy-saving, emission-reduction, green, and low-carbon development in electrified railways, a scheme of photovoltaic (PV) integration into the traction power supply system is proposed. The PV power generation system is connected to the DC side of the AC-DC-AC converter of the co-phase compensation device, eliminating the need for AC-DC inverters. Through the cooperative control of the PV power generation system and the traction power supply system, it realizes the local consumption of new energy, real-time peak shaving and valley filling of traction load, and power quality compensation. Finally, the correctness and effectiveness of the proposed control strategy are verified by simulation.