摘要
电池/超级电容混合储能系统兼具功率密度大和能量密度高的特点。根据城市轨道交通实际线路条件和运行状况,建立仿真模型。通过分析不同发车间隔下剩余再生制动能量的分布和混合储能系统功率分配策略对系统的影响,考虑到电池和超级电容两种储能元件的特性不同,提出基于列车运行工况的动态比例分配策略。该控制策略分为充电模式和放电模式。在充电模式下,通过判别列车运行工况调整功率分配比例,减少电池的使用,提高装置寿命与节能效果;在放电模式下,功率分配比随电池荷电状态动态调整,防止电池过充、过放。最后给出了北京地铁实际线路参数下2MW混合储能系统的仿真结果,验证了该策略的有效性。
The battery/supercapacitor hybrid energy storage system combines high power density with high energy density.According to the actual line conditions and running conditions of urban rail transit,a simulation model is established.By analyzing the distribution of the residual regenerative braking energy at different departure intervals and the influence of hybrid energy storage system power distribution strategy on the system,and considering the different characteristics of the battery and the supercapacitor,a dynamic proportional distribution strategy based on the train operating conditions was proposed.The control strategy is divided into charging mode and discharging mode.In the charging mode,the power distribution ratio is adjusted by discriminating the train operating conditions to reduce the use of the battery and improve the service life and energy saving effect of the device.In the discharge mode,the power distribution ratio is dynamically adjusted with the battery SOC to prevent overcharge and overdischarge of the battery.Finally,the simulation results of the 2MW hybrid energy storage system under the actual line parameters of Beijing subway are presented,and the effectiveness of the strategy is verified.
作者
杨浩丰
刘冲
李彬
林飞
杨中平
Yang Haofeng;Liu Chong;Li Bin;Lin Fei;Yang Zhongping(School of Electrical Engineering Beijing Jiaotong University ,Beijing 100044 China;Systems Engineering Research Institute ,Beijing 100094 China;Yangtze River Delta Research Institute Beijing Jiaotong University ,Zhenjiang 212009 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第S01期168-178,共11页
Transactions of China Electrotechnical Society
基金
国家高速列车技术创新中心资助项目。
关键词
城轨交通
混合储能系统
控制策略
列车运行工况
Urban rail transit
hybrid energy storage system
control strategy
train operating condition
作者简介
杨浩丰,男,1995年生,硕士研究生,研究方向为城市轨道交通储能技术。E-mail:18121521@bjtu.edu.cn;通信作者:林飞,男,1975年生,教授,博士生导师,研究方向为轨道交通电力牵引传动、节能、高速列车系统优化设计等。E-mail:flin@bjtu.edu.cn。
