城轨交通牵引供电系统电流与功率追踪研究  

Research on Current and Power Tracing in Urban Rail Transit

作　　者：米佳雨 杨中平[1] 钟志宏[1] 林飞[1] 孙凯琦 毛润前 MI Jiayu;YANG Zhongping;ZHONG Zhihong;LIN Fei;SUN Kaiqi;MAO Runqian(School of Electrical Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044,China)

机构地区：[1]北京交通大学电气工程学院,北京市海淀区100044

出　　处：《中国电机工程学报》2024年第6期2270-2278,I0015,共10页Proceedings of the CSEE

基　　金：中央高校基本科研业务费专项资金项目(2021YJS151)。

摘　　要：对于包含多个变电站的城轨牵引供电系统,在多车协同运行场景下,变电站、牵引列车、制动列车之间存在着复杂的能量交互。现有的潮流计算方法只关注于得到某时刻下各支路电流的大小,并未深入分析系统中各源(变电站和制动列车)与负荷(牵引列车和线路电阻)之间定量的电流及功率分配关系。该文基于电路理论,对城轨牵引供电系统中的电流分配情况进行上游追踪与下游追踪,定量表征源电流与负荷电流之间的比例关系;基于电流追踪的结果,对城轨牵引供电系统的功率分配进行上游追踪与下游追踪,得到源功率与负荷功率之间的具体分配系数。最后,通过算例分析验证所提潮流追踪算法的有效性和正确性。潮流追踪直观定量地展示了系统的功率流动路径,为后续优化储能系统容量配置和多储能系统间的协调控制提供理论支撑。There is complex energy interaction among substations,powering trains and braking trains in urban rail transit system.The existing power flow calculation methods only focus on obtaining the current of each branch at a certain time,while neglect the quantitative current and power distribution relationship between sources(substation,braking train)and loads(powering train,line resistance)in the system.This paper proposes upstream and downstream current tracing of urban rail transit based on circuit theory to quantitatively characterize the proportional relationship between source current and load current.Based on the result of current tracing,upstream and downstream power tracing are carried out and the distribution coefficients between the power of sources and loads can be obtained.Finally,a case study is carried out to verify the proposed power flow tracing method.Through power flow tracing,the power flow path of the system can be displayed visually and quantitatively,providing a theoretical support for the optimizing sizing and coordinated control of multiple energy storage systems.

关 键 词：城市轨道交通 电流追踪 功率追踪 节点电压方程 上游追踪 下游追踪 

分 类 号：TM92[电气工程—电力电子与电力传动]