动车组电子开关过分相电磁暂态研究  

Research on Electromagnetic Transient of EMUs Electronic Switch Passing Neutral Section

作　　者：韩乐佳 杨少兵[1] 吴命利[1] HAN Lejia;YANG Shaobing;WU Mingli(School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]北京交通大学电气工程学院

出　　处：《机车电传动》2019年第5期1-5,14,共6页Electric Drive for Locomotives

基　　金：中央高校基本科研业务费资助项目(2017JBZ101)

摘　　要：使用电子开关的过分相方案可在一定程度上消除传统方式过分相导致的列车降速问题,提高列车通行能力,然而动车组在过分相时产生的暂态过电压不仅会威胁到车顶设备,而且可能会损坏分相设备。文章以某型号动车组构建了详细的主电路模型,包括高压系统及牵引变流器等;针对电子开关过分相的具体方案,设计了采用并联阻容装置预防过电压的技术措施,并针对不同的过分相死区时间开展了研究。仿真分析及实测数据对比表明,详细的动车组主电路模型能更准确地描述过分相的电压和电流暂态过程,暂态过电压幅值与死区时间有直接关系。试验验证了所提并联阻容保护装置用于暂态过电压抑制的有效性。Electronic switch passing neutral section can eliminate the problem of train speed reduction in traditional way, and improve the train passing ability. However, the transient over-voltage generated during passing neutral section not only threatens the roof equipment, but also may damages the passing neutral section equipment. In this paper, a detailed main circuit model for a certain type of EMUs was constructed, including high-voltage system and traction converter. Aiming at the specific scheme of electronic switch passing neutral section, the technical measures of preventing over-voltage by using parallel resistance-capacitance device were designed, and research was carried out according to different dead-time. The simulation analysis and the comparison of the measured data showed that the detailed EMUs main circuit model could more accurately describe the over-phase voltage and current transient process, and the amplitude of the transient overvoltage was directly related to the dead-time. Experiments verified the effectiveness of the proposed shunt resistance-capacitance protection device for transient overvoltage suppression.

关 键 词：电子开关 过分相 动车组 过电压抑制 仿真 

分 类 号：U266.2[机械工程—车辆工程]