动车组网压中断快速检测及应对策略

doi:10.19595/j.cnki.1000-6753.tces.L80618

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摘要弓网离线导致的网压中断对动车组变流系统的长期安全可靠运行产生不利影响和潜在安全隐患。该文基于既有的动车组牵引变流系统,介绍系统的构成及网侧变流器电流控制方法,分析了网压中断对系统的不利影响,提出“基于有功电流判断的检测方法”和“基于锁相环相角变化判断的检测方法”两种网压中断快速检测方法,给出网压恢复时电流冲击抑制措施。搭建一个网压中断模拟实验平台,设计一种网压中断模拟方案,验证文中提出的网压中断快速检测方法的可行性以及电流冲击抑制措施的有效性,为非理想受流条件下动车组牵引系统的安全可靠运行提供技术支撑。

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	张钢
	郭尝君
	郝峰杰
	刘志刚

关键词 ：牵引系统, 弓网离线, 网压中断, PWM整流器

Abstract：The interruption of the network voltage caused by the pantograph off-line has a serious adverse impact on the long-term safe and reliable operation of the electric multiple units (EMU) converter system and potential safety hazards. This paper introduces the system configuration and grid-side converter current control method based on the existing traction system of EMU. The influence of network voltage interruption to the system is also analyzed. Two fast detection methods for network voltage interruption are proposed, which are called “detection method based on active current determination” and “detection method based on change of phase angle of phase-locked loop”. Some solutions are introduced to suppress current surge when network voltage recover. A network voltage interruption simulation experiment platform is set up. Through a network voltage interruption simulation scheme, the feasibility of the rapid detection method of network voltage interruption proposed in this paper, and the effectiveness of current impact suppression measures are provided, which provide the technology for the safe and reliable operation of the EMU traction system under the condition of non ideal flow.

Key words： Traction system pantograph offline network voltage interruption PWM rectifier

收稿日期: 2018-07-05 出版日期: 2020-01-02

PACS:

TM614

作者简介: 张钢男,1982年生,博士,副教授,研究方向为轨道交通大功率变流技术。E-mail: gzhang@bjtu.edu.cn（通信作者）郭尝君男,1994年生,硕士研究生,研究方向为电力电子与电力传动。E-mail: guochangjun@bjtu.edu.cn

引用本文:

张钢, 郭尝君, 郝峰杰, 刘志刚. 动车组网压中断快速检测及应对策略[J]. 电工技术学报, 2019, 34(zk2): 770-780. Zhang Gang, Guo Changjun, Hao Fengjie, Liu Zhigang. The Rapid Detection and Countermeasures for Network Voltage Interruption in Electric Multiple Units. Transactions of China Electrotechnical Society, 2019, 34(zk2): 770-780.

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