城市轨道交通同相储能供电系统的节能运行优化策略  

Energy-saving Operation Optimization Strategy of Urban Rail Transit Co-phase Energy Storage Power Supply System

作　　者：侯峰 王帅 孙忠锐 HOU Feng;WANG Shuai;SUN Zhongrui(Guangzhou Metro Design&Research Institute Co.,Ltd.,510010,Guangzhou,China;Electrical Engineering Colledge of Southwest Jiaotong University,611765,Chengdu,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广州510010 [2]西南交通大学电气工程学院,成都611765

出　　处：《城市轨道交通研究》2024年第6期296-300,309,共6页Urban Mass Transit

基　　金：国家重点研发计划项目虚拟同相柔性供电技术(2017YFB1200801-08)。

摘　　要：[目的]针对广州地铁18号线采用的组合式同相供电装置,为了解决同相牵引供电系统中存在的再生制动能量利用率低的问题,需对同相储能供电系统的节能运行优化策略进行研究。[方法]以牵引变电所的日电费成本最低为目标,平衡节点功率,以供电装置与储能装置运行特征为约束,建立了同相储能供电系统节能优化模型。以广州地铁18号线某牵引变电所负荷过程实测数据为依据,对城市轨道交通牵引负荷过程进行分析,利用CPLEX商业规划求解器对该模型求解,最终获得同相储能系统最优能量管理方案。[结果及结论]超级电容接入组合式同相供电装置直流环节的储能供电系统,通过超级电容对牵引负荷的削峰填谷作用,能提高牵引供电系统再生制动能量利用率,减小城市轨道交通运营商的电费成本。试验结果表明,相比传统的同相供电系统,采用接入超级电容的同相储能供电系统可使得再生制动能量利用率达到92.88%,使日电费成本降低9.65%,节能效果显著。[Objective]As modular co-phase power supply devices are used in Guangzhou Metro Line 18,it is necessary to study the energy-saving operation optimization strategy of the co-phase energy storage power supply system in order to solve the problem of low utilization rate of regenerative braking ener-gy in the co-phase traction power supply system.[Method]With the goal of minimizing the daily electricity cost of traction substation to balance the node power,and constrained by opera-tion characteristics of power supply devices and energy storage devices,an optimized energy-saving model of co-phase energy storage power supply system is established.Based on the meas-ured load process data of a traction substation on Guangzhou Metro Line 18,the traction load process of urban rail transit is analyzed.CPLEX commercial planning solver is used to solve the above model and finally the optimal energy management scheme of the co-phase energy storage system is obtained.[Result&Conclusion]The energy storage power supply sys-tem with the supercapacitor connected to DC link of the modu-lar co-phase power supply device works as follows:with the peak cutting and valley filling effect of the supercapacitor on the traction load,the regenerative braking energy utilization rate of the traction power supply system can be increased,sav-ing the electricity cost of urban rail transit operators conse-quently.The test results show that compared with the tradition-al co-phase power supply system,the co-phase energy storage power supply system with supercapacitor can increase the re-generative braking energy utilization rate to 92.88%,and re-duce the daily electricity cost by 9.65%,showing remarkable energy saving effect.increase the regenerative braking energy utilization rate to 92.88%.

关 键 词：城市轨道交通 能量管理 同相储能供电系统 节能优化模型 

分 类 号：U231.8[交通运输工程—道路与铁道工程]