Threshold Optimization of Stationary Energy Storage System Based on Train Braking Power

Optimization of threshold of the stationary energy storage system and braking resistor is studied. In order to reduce the energy loss of regenerative brake on the line impedance and to stabilize the voltage of pantograph, a threshold optimization method based on maximum braking feedback power of train is proposed. The simulation is conducted by using actual line parameters of metro. The results show that the method can effectively improve the energy recovery rate of regenerative brake in the case of single-vehicle brake and can reduce the voltage of pantograph and avoid the failure of regenerative brake in the case of multi-vehicle brake.