大型枢纽地区车网电气耦合系统谐波过电压产生机理研究  

Study on Harmonic Overvoltage Generation Mechanism of Vehicle-traction Network Coupling System in Large Hub Area

作　　者：黄金 张桂南 高翔 HUANG Jin;ZHANG Guinan;GAO Xiang(Locomotive & Car Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 10081, China)

机构地区：[1]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081

出　　处：《铁道学报》2020年第12期65-71,共7页Journal of the China Railway Society

基　　金：2017年中国科协青年人才托举工程项目(2017QNRC001)。

摘　　要：针对国内某大型枢纽地区多次发生的接触网电压异常导致某型HXD电力机车主断跳开且长时间无法重合问题,通过时频分析的手段初步确定为高频谐振过电压问题。推导该大型枢纽地区的牵引供电系统的整体阻抗参数,确定供电系统的谐振频率分布特征;并针对不同工况推导了该HXD电力机车的谐波特征;其次结合载波移相技术,基于Simulink仿真软件搭建该机车的仿真模型,仿真结果表明部分动力工况下机车将产生谐振频率附近的谐波成分;随后采用控制变量法构造试验,验证并分析该机车不同动力工况下接触网电压的谐波特性;最后,结合频谱分析制定该现象的抑制方案,为电气化铁路的谐波治理提供技术支撑。In view of tripping and failure to reclose of the main switch of the HXD AC locomotive caused by frequent occurrence of abnormal catenary voltage in a large hub area in China,the time-frequency analysis was used to preliminarily determine that the cause was a high-frequency resonance overvoltage problem.Firstly,the overall impedance parameters of the traction power supply system in the large hub area were derived,to determine the resonant frequency distribution characteristics of the power supply system.The harmonic characteristics of the HXD electric locomotive were deduced according to different working conditions.Secondly,considering the carrier phase shift technology,the simulation model of the locomotive was built based on Simulink.The simulation results show that the harmonic component near the resonant frequency will be produced in the locomotive under partial power conditions.Finally,the control variable method was used to design the test to verify and analyze the harmonic characteristics of catenary voltage under different power conditions of the locomotive.Combined with the spectrum analysis results,the suppression strategy of the phenomenon was given.The research results of this paper can provide technical support for harmonic treatment of electrified railway.

关 键 词：时频分析 大型枢纽 高频谐振 载波移相 

分 类 号：U264[机械工程—车辆工程] U221[交通运输工程—载运工具运用工程]