Modeling and Analysis of Low Frequency Oscillation in Train-network System Under Mixed Operation of Trains

被引：0
|
作者：
Kong R. [1 ]
Lyu X. [1 ]
Wang X. [1 ]
Chang M. [1 ]
Ge M. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiao Tong University, Sichuan Province, Chengdu
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 10期
关键词：
analytical model; d-q impedance model; electrified railway; low-frequency oscillation; mixed operation with multiple trains;
D O I：
10.13334/j.0258-8013.pcsee.213307
中图分类号：
学科分类号：
摘要：
In electrified railways, the model of different trains using transient direct current control (TDCC) and d-q decoupling control (DQDC) have not been proposed under a unified frame. It is difficult to study the low-frequency oscillations (LFO) of the train-network system under the mixed operating conditions with multiple control types of trains. In this paper, a small-signal impedance model of the single-phase converter of TDCC train is established in the d-q frame, which realizes the unification of frame with the DQDC converter model, and considers the control links neglected in the existing TDCC converter model. After that, the d-q analytical model of the TDCC single-phase converter is deduced, based on which, the mechanism of the impact of the voltage controller on the LFO of the train-network system is revealed, and the accuracy advantage of the proposed model in the LFO analysis is illustrated. Furthermore, the LFO analysis of the system under the mixed operating conditions with different control types of trains is conducted. Finally, the accuracy of the proposed model and the correctness of the theoretical analysis are verified through time-domain simulation and hardware-in-the-loop experiments. ©2023 Chin.Soc.for Elec.Eng.
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收藏
页码：3768 / 3780
页数：12
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