动车组牵引系统接地分段诊断研究及应用  

Research and application of grounding sectional diagnosis of EMU traction system

作　　者：于建顺 马柳青 陈昱洲 郑维飞 伍元辉 齐彪 白冰 YU Jianshun;MA Liuqing;CHEN Yuzhou;ZHENG Weifei;WU Yuanhui;QI Biao;BAI Bing(CRRC Zhuzhou Locomotive Co.,Ltd.,Zhuzhou 412001,China;Vehicle Department,China Railway Guangzhou Group Co.,Ltd.,Guangzhou 510088,China;Changsha Depot,China Railway Guangzhou Group Co.,Ltd.,Changsha 410034,China)

机构地区：[1]中车株洲电力机车有限公司,湖南株洲412001 [2]中国铁路广州局集团有限公司车辆部,广东广州510088 [3]中国铁路广州局集团有限公司长沙车辆段,湖南长沙410034

出　　处：《电力机车与城轨车辆》2024年第6期48-54,共7页Electric Locomotives & Mass Transit Vehicles

摘　　要：针对动车组牵引系统现有接地故障检测方法存在的问题,文章基于接地故障检测电路原理,并综合考虑不同位置接地故障的半中间电压特征,提出了一种牵引系统接地故障分段诊断的优化方案,并进行了试验验证和运用考核。结果表明,该优化方案能够实现对牵引系统接地故障的分段诊断,准确检测接地故障的发生位置,并能对不同位置接地故障进行相应的保护动作,有效节约了检修维护时间,提高了动车组运用效率。Aiming at the problems existing in the existing grounding fault detection methods of EMU traction system,based on the principle of grounding fault detection circuit and the semi-intermediate voltage characteristics of grounding fault at different locations,this paper proposes an optimization scheme for sectional diagnosis of grounding fault of traction system,and carries out experimental verification and application assessment.The results show that the optimization scheme can realize the sectional diagnosis of the grounding fault of traction system,accurately detect the location of the grounding fault,and carry out the corresponding protection action for the grounding at different locations,which effectively saves the maintenance time and improves the operation efficiency of the EMU.

关 键 词：动车组 牵引系统 牵引变流器 半中间电压 接地故障 优化 

分 类 号：U266.2[机械工程—车辆工程]