Transient Response Analysis Considering ZPW-2000A Track Circuit with High Frequency Loss

被引：0
|
作者：
Zhao B. [1 ]
Chen L. [1 ]
Ou J. [1 ]
Wang D. [1 ]
Yu G. [1 ]
机构：
[1] School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Gansu, Lanzhou
来源：
Zhongguo Tiedao Kexue/China Railway Science | 2023年 / 44卷 / 01期
关键词：
Complex frequency domain; High frequency loss; Node admittance method; Q-D algorithm; Transient response; ZPW-2000A track circuit;
D O I：
10.3969/j.issn.1001-4632.2023.01.19
中图分类号：
学科分类号：
摘要：
Aiming at the difficulties in application and time-consuming problems in existing methods when calculating the transient response of ZPW-2000A track circuit with high frequency loss, a method for solving rail surface voltage at the receiving end of the track circuit in the complex frequency domain is proposed. Firstly, based on the transmission line theory, the transmission line model of track circuit is established. Secondly, using the model and the node admittance method, the time-domain equation of node admittance is obtained, which allows Laplace transform to be performed onto the equation. Since considering the high frequency loss, the complex frequency domain equation is transformed and decoupled to obtain the solution of the complex frequency domain of the rail surface voltage at the receiving end of the track circuit. Finally, the time-domain solution of the rail surface voltage is obtained using Fourier transform and Q-D algorithm. Based on the verification of the solution method, the influences of factors such as high frequency loss, frequency, shunt resistance, state of tuning area and ballast resistance on the transient response of track circuit, are analyzed. The results show that compared with the finite-difference time-domain method, the error of the proposed solution method is less than 8%, and the calculation time is short. The rail surface voltage at the receiving end of the track circuit with high frequency loss is less than that without considering high frequency loss. The rail surface voltage drop decreases with the rise of shunt resistance and increases with the rise of ballast resistance. The proposed solution method can accurately and efficiently analyze the transient response of ZPW-2000A track circuit with high frequency loss and provide a theoretical reference for the transient response analysis of track circuit. © 2023 Chinese Academy of Railway Sciences. All rights reserved.
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页码：186 / 193
页数：7
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