Impedance measurement method and stability analysis of high-speed train-traction network

被引：0
|
作者：
Liu F. [1 ]
Ge X. [1 ]
Yu S. [1 ]
Jiang K. [2 ]
机构：
[1] Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu
[2] Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Harmonic parameter self-adjustment; Impedance measurement; Stability analysis; Stability threshold determination; Train-network system;
D O I：
10.16081/j.epae.202006025
中图分类号：
学科分类号：
摘要：
During the operation of high-speed trains, low-frequency oscillations are likely to occur, which affects the stable operation of the high-speed-train traction drive system. Taking the high-speed train single-phase traction rectifier as the research object and the stability analysis of the train-network system as the research goal, based on the impedance definition model, a method for measuring the input admittance of the traction drive system and the output impedance of the network side is proposed. Through detection of the rectifier operation condition, the threshold value is determined, and then the magnitude of the real-time disturbance harmonic is adjusted. The disturbance injection device corresponding to the measurement method is designed to achieve the adjustment of the disturbance harmonic amplitude by adjusting the programmable resistance. The impedance of the train-network system is measured in the dq rotating coordinate system, the stability analysis is performed based on the measurement results, and the simulative verification is perfor-med through MATLAB/Simulink, and the hardware-in-the-loop test verification is performed. The simulative and test results show that the time-domain operating conditions of the train-network system are consistent with the results of the stability analysis, and the effectiveness of the designed measurement method is verified. © 2020, Electric Power Automation Equipment Press. All right reserved.
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页码：154 / 159and178
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