Abstract:Way-side energy storage system (ESS) has a broad application prospect in urban railway power supply system. The black-box model of ESS was built in this paper, which can be controlled by a multi-state switching strategy for traction substation with ESS based on BBC algorithm. The solving solutions of equivalent circuits in different states were given, into which the current distribution relationship between ESS and rectifier during discharging condition were took. The 2-loops iterative algorithm of DC traction power supply system proposed in this paper has high iteration speed. Three indexes were defined to evaluate the voltage stabilizing and energy saving effect of ESS under different departure interval. Case study for different departure time based on a certain metro line in Guangzhou was analyzed. The traction network voltage is improved a lot after installing ESS in each substation. The recovery rate of regenerative braking energy is raised from 56.4% to 95%. The output energy saving rate of substations can be as high as 12.1%. The result of simulation indicates that the voltage stabilizing and energy saving effect of ESS is obvious.
刘炜, 吴拓剑, 禹皓元, 张戬, 张丽. 直流牵引供电系统地面储能装置建模与仿真分析[J]. 电工技术学报, 2020, 35(19): 4207-4215.
Liu Wei, Wu Tuojian, Yu Haoyuan, Zhang Jian, Zhang Li. Modeling and Simulation of Way-Side Energy Storage Devices in DC Traction Power Supply System. Transactions of China Electrotechnical Society, 2020, 35(19): 4207-4215.
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