Stability Mechanism Analysis of Traction Power System and Traction Drive System

Huazhi ZHANG; Jun HUANG; Bo ZHAN; Jie WU; Wensheng SONG

doi:10.13890/j.issn.1000-128x.2021.02.021

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Stability Mechanism Analysis of Traction Power System and Traction Drive System

Railway Electrification | 更新时间：2021-12-09

- Stability Mechanism Analysis of Traction Power System and Traction Drive System
- Electric Drive for Locomotives Issue 2, Pages: 134-139(2021)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.02.021
  CLC：
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Huazhi ZHANG, Jun HUANG, Bo ZHAN, et al. Stability Mechanism Analysis of Traction Power System and Traction Drive System. [J]. Electric Drive for Locomotives (2):134-139(2021)
DOI：

Huazhi ZHANG, Jun HUANG, Bo ZHAN, et al. Stability Mechanism Analysis of Traction Power System and Traction Drive System. [J]. Electric Drive for Locomotives (2):134-139(2021) DOI： 10.13890/j.issn.1000-128x.2021.02.021.

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。

Abstract

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

Keywords

vehicle-grid systemstability analysishigh-speed trainEMUlow frequency oscillationimpedance ratio criterionnetwork voltage-power limit protectionhigh-speed railway

references

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