动车组辅助变流器接地故障检测保护方式比较  

Comparative of Detection and Protection Methods of Earthing Fault for Auxiliary Converter of EMU

作　　者：陈建峰 付磊 姜新生 CHEN Jianfeng;FU Lei;JIANG Xinsheng(CRRC Xi′an Yongdian Jietong Eletric Co.,Ltd.,Xi′an 7100162,China;CRRC Tangshan Co.,Ltd.,Tangshan 064000,China)

机构地区：[1]西安中车永电捷通电气有限公司,陕西西安710016 [2]中车唐山机车车辆有限公司,河北唐山064000

出　　处：《电工技术》2023年第7期157-159,共3页Electric Engineering

摘　　要：对目前动车组辅助变流器电流型和电压型两种接地检测方式进行对比研究,对两种接地检测方式的工作原理进行说明,推导了两种接地检测方法的计算公式,并阐述了采用两种接地检测方式判断动车组辅助变流器是否发生单相接地故障的保护逻辑,最后给出了两种接地检测方式的对比研究结果。The current and voltage detection methods of the auxiliary converter of EMUs are compared and studied,the working principle of the two grounding detection is explained,and the calculation formula of the two grounding detection methods is derived.The protection logic of using two grounding detection methods to determine whether a single-phase ground fault occurs in the auxiliary converter of the EMU is expounded.Finally,the comparative results of the two grounding detection methods are given.

关 键 词：动车组辅助变流器 单相接地故障 接地检测 保护动作逻辑 

分 类 号：TM46[电气工程—电器]