基于滑模控制的牵引网低频振荡抑制方法*

doi:10.11985/2022.01.017

电气工程学报 ›› 2022, Vol. 17 ›› Issue (1): 129-136.doi: 10.11985/2022.01.017

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基于滑模控制的牵引网低频振荡抑制方法^*

胡颖新¹(), 宁志毫²(), 兰征¹(), 曾进辉¹, 姜飞³, 何东¹

1.湖南工业大学电气与信息工程学院株洲 412007
2.国网湖南电力有限公司电力科学研究院长沙 410036
3.长沙理工大学电气与信息工程学院长沙 410004

收稿日期:2021-09-17 修回日期:2021-11-09 出版日期:2022-03-25 发布日期:2022-05-06
通讯作者: 兰征 E-mail:928889564@qq.com;nzh22@163.com;lanzheng20@foxmail.com
作者简介:胡颖新,男,1996年生,硕士研究生。主要研究方向为牵引网低频振荡抑制方法。E-mail： 928889564@qq.com;
宁志毫,男,1983年生,博士,高级工程师。主要研究方向为谐波抑制、电能质量、无功补偿等。E-mail： nzh22@163.com
基金资助:
*国家自然科学基金(51807058);湖南省自然科学基金(2021JJ50002);湖南工业大学研究生科研创新(CX2028)

Low Frequency Oscillation Suppression Method of Traction Network Based on Sliding Mode Control

HU Yingxin¹(), NING Zhihao²(), LAN Zheng¹(), ZENG Jinhui¹, JIANG Fei³, HE Dong¹

1. College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007
2. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410036
3. College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410004

Received:2021-09-17 Revised:2021-11-09 Online:2022-03-25 Published:2022-05-06
Contact: LAN Zheng E-mail:928889564@qq.com;nzh22@163.com;lanzheng20@foxmail.com

摘要/Abstract

摘要：

牵引网低频振荡会造成动车组牵引封锁,影响电气化铁路的安全稳定运行。针对CRH5型动车组网侧整流器低频振荡问题,提出一种基于滑模控制的低频振荡抑制方法。首先利用小信号建模方法建立车网耦合系统回比矩阵模型,并利用改进sum-范数判据和幅频特性曲线进行稳定性理论分析。其次,设计电压外环滑模控制器来替换传统的比例-积分(Proportional integral,PI)控制器,以实现牵引网低频振荡的抑制。最后在Matlab/Simulink仿真平台搭建基于传统PI控制器和滑模控制器动车组网侧整流器仿真模型,仿真结果表明所提控制方法具有更好的鲁棒性,能较好地抑制牵引网低频振荡问题,验证了所提方法的正确性与有效性。

关键词: 牵引网, 低频振荡, 改进sum-范数判据, 滑模控制

Abstract:

Low frequency oscillation of traction network will cause traction blocking of multiple units and affect the safe and stable operation of electrified railway. Aiming at the low-frequency oscillation problem of CRH5 EMU networking side rectifier, a low-frequency oscillation suppression method based on sliding mode control is proposed. Firstly, the small signal modeling method is used to establish the loop ratio matrix model of vehicle network coupling system, and the stability is analyzed by using the improved sum norm criterion and amplitude frequency characteristic curve. Secondly, the voltage outer loop sliding mode controller is designed to replace the traditional proportional integral(PI) controller to suppress the low-frequency oscillation of traction network. Finally, the simulation model of the rectifier on the networking side of the motor car based on the traditional PI controller and sliding mode controller is built on the Matlab/Simulink simulation platform. The simulation results show that the proposed control method has better robustness and can better suppress the low-frequency oscillation of the traction network, which verifies the correctness and effectiveness of the proposed method.

Key words: Traction network, low frequency oscillation, sum norm criterion, sliding mode control

中图分类号:

TM561

胡颖新, 宁志毫, 兰征, 曾进辉, 姜飞, 何东. 基于滑模控制的牵引网低频振荡抑制方法^*[J]. 电气工程学报, 2022, 17(1): 129-136.

HU Yingxin, NING Zhihao, LAN Zheng, ZENG Jinhui, JIANG Fei, HE Dong. Low Frequency Oscillation Suppression Method of Traction Network Based on Sliding Mode Control[J]. Journal of Electrical Engineering, 2022, 17(1): 129-136.

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基于滑模控制的牵引网低频振荡抑制方法^*

Low Frequency Oscillation Suppression Method of Traction Network Based on Sliding Mode Control

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