牵引供电系统与牵引传动系统稳定性机理分析  

Stability Mechanism Analysis of Traction Power System and Traction Drive System

作　　者：张华志[1,2] 黄军 湛博[2] 吴杰 宋文胜[2] ZHANG Huazhi;HUANG Jun;ZHAN Bo;WU Jie;SONG Wensheng(China Railway Siyuan Survey And Design Group Co.,Ltd.,Wuhan,Hubei 430063,China;School of Electrical Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063 [2]西南交通大学电气工程学院,四川成都610031

出　　处：《机车电传动》2021年第2期134-139,共6页Electric Drive for Locomotives

摘　　要：国内某客运专线牵引变电所频繁出现跳闸情况,给牵引供电系统和动车组正常运行带来安全隐患。为寻求故障根源,用于指导今后的高速铁路建设,本文首先利用阻抗比判据建立车网闭环系统传递函数模型,揭示阻抗参数不匹配引起低频振荡产生的原理,并对动车组网压-功率限制保护引起低频振荡进行分析。然后基于MATLAB/Simulink软件搭建车网系统仿真模型并进行联合仿真,再现现场故障现象。本文通过理论分析并仿真验证了低频振荡产生的2种原因,可为实际现场振荡抑制提供指导,进而保障车网系统的稳定安全运行。In view of the frequent occurrence of tripping in a domestic passenger dedicated line traction substation,which brought safety hazards to the normal operation of the power supply system and the high-speed trains.In order to seek the mechanism of the fault and guide the construction of high-speed railway in the future,this paper firstly used the impedance ratio criterion to establish the transfer function model of the closed loop system of the vehicle-grid system,revealed the mechanism of low-frequency oscillation caused by impedance parameter mismatch,and analyzed the low frequency oscillation caused by network voltage-power limit protection of high-speed trains.Then the vehicle-grid system simulation model was built and joint simulation was performed to reproduce the field fault phenomenon based on MATLAB/Simulink software.The theoretical analysis and simulation of this paper validated the two causes of low frequency oscillation,which can provide guidance for the actual field oscillation suppression,and thus ensure the stable and safe operation of the vehicle-grid system.

关 键 词：车网系统 稳定性分析 高速列车 动车组 低频振荡 阻抗比判据 网压功率限制保护 

分 类 号：U223[交通运输工程—道路与铁道工程]