交直流机车混合运行牵引供电网谐波特性分析  

Analysis of Harmonic Characteristics of AC-DC Hybrid Traction Power Supply Network

作　　者：郭佳[1] 刘沛津 郭俊逸 叶远芹 

机构地区：[1]西安建筑科技大学机电工程学院,陕西西安710055

出　　处：《机车电传动》2017年第6期57-63,共7页Electric Drive for Locomotives

基　　金：国家自然科学基金资助项目(51275375);西安建筑科技大学横向项目(2016408)

摘　　要：针对机车调度中交直型和交直交型机车单独运行以及2种类型机车在同一牵引变压器供电下混合运行等复杂工况对网侧电流影响严重的问题,分析了交直型SS4电力机车及交直交型HXD3电力机车的牵引传动系统原理,建立了根据机车级位和速度自动判别机车行驶段位的交直型和采用空间矢量脉宽调制控制策略(SVPWM)的交直交型机车的SIMULINK仿真模型。在此基础上建立了同一牵引变压器不同类型机车混合运行模型,对典型工况进行仿真分析,得出各工况运行下的网侧电流谐波次数、谐波含有量及总电流畸变率,可用于供电网谐振分析、谐波治理、调度运行等方面。In locomotive dispatching,no matter respectively or together,the operation of AC-DC and AC-DC-AC electric locomotives both results in complex working conditions,which exerts serious influence current on the line side.The traction drive systems of AC-DC SS4 and AC-DC-AC HXD3 electric locomotives were analyzed.A SIMULINK simulation model of AC-DC locomotive which could automatically judge the operation segment according to the stage and speed of locomotive was established,as well as SIMULINK simulation model of AC-DC-AC locomotive with space vector pulse width modulation control strategy（SVPWM）.On this foundation,a hybrid operation model of variable locomotive under the same traction was established.Through the simulation of typical working conditions,line side current harmonics,harmonic volume and the total current distortion rate could be obtained.The conclusion could be used for resonance analysis,harmonic control,dispatching and other aspects of power supply network.

关 键 词：混合运行 网侧电流 谐波 交直型机车 交直交型机车 电气化铁路 

分 类 号：U223.63[交通运输工程—道路与铁道工程] TM743[电气工程—电力系统及自动化]