摘要
随着电气化铁路运营里程的不断增加,能耗问题也日益加重。为电气化铁路加装混合储能系统可以有效地回收列车再生制动能量,实现电气化铁路的节能运行。混合储能系统在采用滤波能量管理策略时,其内部会出现不同储能介质间的能量交换问题。对此,首先提出一种基于阶梯能量管理的控制策略,通过抑制这种能量交换来提高系统的再生制动能量利用率,该控制策略充分发挥了锂电池能量密度高、超级电容器响应速度快的优势。然后为了补偿锂电池参考功率变化引起的功率跟踪误差,加入超级电容器补偿环节来提升混合储能系统的动态性能。最后通过RT-Lab实时仿真和基于实测数据的算例分析验证了所提策略的有效性和可行性。
As the mileage of electrified railways continues to increase, the energy consumption problem is increasing. Retrofitting hybrid energy storage systems for the electrified railways can effectively recover the regenerative braking energy of trains and realize the energy-saving operation of an electrified railway. However, there will be energy exchange problems between different energy storage media when the hybrid energy storage system adopts the filtered energy management strategy.In this regard, firstly, a control strategy based on increment energy management is proposed. This strategy takes full advantages of the high energy density of lithium batteries and the fast response of supercapacitors, and improves the regenerative braking energy utilization rate of the system by suppressing the energy exchange. Then, to compensate the power tracking error caused by the lithium battery reference power variation, the supercapacitor compensation is added to enhance the dynamic performance of the hybrid energy storage system. Finally, the effectiveness and feasibility of the proposed strategy are verified by RT-Lab real-time simulations and case analysis based on real measurement data.
作者
耿安琪
胡海涛
张育维
陈俊宇
葛银波
Geng Anqi;Hu Haitao;Zhang Yuwei;Chen Junyu;Ge Yinbo(College of Electrical Engineering Southwest Jiaotong University,Chengdu 611756 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第23期4916-4925,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(52077179)
中国国家铁路集团有限公司科技研究开发计划(N2020G021)资助项目。
关键词
电气化铁路
混合储能系统
再生制动能量
阶梯能量管理
Electrified railway
hybrid energy storage systems
regenerative braking energy
increment energy management
