基于动态相量法的地铁牵引整流机组谐波传递研究  

Research on Harmonic Transfer of Metro Traction Rectifier Unit Based on Dynamic Phasor Method

作　　者：华敏 陈剑云[1] 傅钦翠[1] 钟汉华 HUA Min;CHEN Jianyun;FU Qincui;ZHONG Hanhua(State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,江西南昌330013

出　　处：《铁道学报》2024年第10期58-67,共10页Journal of the China Railway Society

基　　金：国家自然科学基金(52362052,51467004);轨道交通基础设施性能监测与保障国家重点实验室开放课题(HJGZ2021110)。

摘　　要：牵引整流机组在运行过程中具有非线性时变特性,对谐波扰动的传递作用导致其交直流侧的谐波交互影响,成为威胁地铁牵引供电系统安全稳定的潜在隐患。为揭示牵引整流机组交直流侧谐波传递的内在机理,采用基于动态相量表达的电压、电流开关函数描述牵引整流机组的非线性时变特性,分析整流变压器不同连接方式对开关函数的影响,给出开关函数的各阶动态相量计算式。以调制理论为框架,采用基于动态相量的矩阵运算进行牵引整流机组谐波传递计算,包括交流侧谐波电压传递和直流侧谐波电流传递,模拟牵引整流机组谐波传递过程,明确了谐波频率的变换关系。通过与PSCAD/EMTDC中详细电磁暂态仿真结果进行对比,验证了该方法的正确性和有效性,可为滤波装置参数设计与谐波抑制策略制定提供参考。The metro traction power supply system faces a potential stability threat,because of the AC and DC harmonics transfered and interacted by the nonlinear time-varying characteristics of traction rectifier unit.In order to reveal the internal transfer mechanism of AC and DC harmonics in traction rectifier unit,the dynamic phasor analysis expressions of voltage and current switching functions were used to describe the nonlinear time-varying characteristics of traction rectifier units,to analyze the influence of different connection modes of rectifier transformers on the switching function.The dynamic phasor calculation formulas for each order of switching function were given.Subsequently,the matrix operation based on dynamic phasor was used to calculate the harmonic transfer of traction rectifier unit,including AC harmonic voltage transfer and DC harmonic current transfer,which completely simulated the harmonic transfer process of traction rectifier unit and clarified the conversion relationship of harmonic frequency.Finally,the accuracy and effectiveness of the proposed method were verified by comparing with the detailed electromagnetic transient simulation results in PSCAD/EMTDC,which could serve as a theory reference for filter device design and harmonic suppression strategy formulation.

关 键 词：牵引整流机组 谐波传递 动态相量法 开关函数 频率变换 

分 类 号：U231.8[交通运输工程—道路与铁道工程]