Supercapacitor - Rail Transit Energy Storage System
May 19, 2022
As a rail transit energy storage system, supercapacitors can play the role of braking energy recovery and voltage stabilization. Experts pointed out that in the energy consumption of urban rail vehicles, traction energy consumption accounts for 90%, and vehicle auxiliary equipment energy consumption accounts for 10%. If appropriate measures are taken, such as reasonable arrangement of vehicle operation and the use of energy management equipment such as supercapacitors, 40% of the power consumption can be fed back to the power supply system when the vehicle is braking to supply the accelerating vehicle. Since the voltage fluctuation will be caused when the train starts and brakes, if suitable energy management equipment is used, the fluctuation of the grid voltage can be reduced, thereby improving the power supply quality.
Generally, urban rail vehicles have long running mileage and high safety requirements, and require higher reliability and performance of energy storage components. According to experts, the designed service life of urban rail vehicles is 30 years, which is about three times that of ordinary bus vehicles. Supercapacitors have longer cycle life and higher reliability than batteries, and are gradually gaining favor.
According to the analysis of the China Information Industry Report, in the global rail transit market, China, the United States, and Russia are the three most important markets for the rail transit equipment industry; The huge demand for rail transit; the strongest countries in the field of rail transit include Germany, France, Canada and Japan.
