直流牵引供电系统地面储能装置建模与仿真分析  

Modeling and Simulation of Way-Side Energy Storage Devices in DC Traction Power Supply System

作　　者：刘炜[1] 吴拓剑 禹皓元 张戬 张丽[1] Liu Wei;Wu Tuojian;Yu Haoyuan;Zhang Jian;Zhang Li(School of Electrical Engineering Southwest Jiaotong University,Chengdu 611756 China)

机构地区：[1]西南交通大学电气工程学院,成都611756

出　　处：《电工技术学报》2020年第19期4207-4215,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51607148)。

摘　　要：地面储能装置在城市轨道交通牵引供电系统中有较为广阔的应用前景。该文建立了地面储能装置的通用计算模型,提出一种基于滞环算法的变电所多状态切换策略,给出不同工作状态下等效电路的求解方法,并分析了储能装置与整流机组协同输出时的电流分配关系。在此基础上设计的直流牵引供电计算双层迭代算法具有迭代速度快的特点。该文提出一组评估储能装置节能稳压效果的指标,针对广州某地铁线路进行不同发车间隔下的算例研究。全线安装储能后牵引网电压有明显改善,再生制动能量回收率从56.4%提升到95%以上,全线牵引变电所节能率可达12.1%。仿真结果表明,储能装置在地铁牵引供电系统中具有良好的节能、稳压效果。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 fordifferent 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 ofESS is obvious.

关 键 词：城市轨道交通 储能装置 再生制动 直流牵引供电系统 

分 类 号：TM922[电气工程—电力电子与电力传动]