火电厂辅机动配箱电机接地故障引起机组停运的分析与处理  

Analysis and Treatment of Unit Outage Caused by Grounding Fault of Auxiliary Motor Allocation Box Motor in Thermal Power Plant

作　　者：彭荣 PENG Rong(Guangzhou Development Power Technology Co.,Ltd.,Guangzhou 511458,China)

机构地区：[1]广州发展电力科技有限公司,广东广州511458

出　　处：《电工技术》2022年第23期279-280,283,共3页Electric Engineering

摘　　要：对某电厂一起380 V辅机动配箱电机接地故障引发辅机双路电源失电、机组停运的事故进行分析,并提出了改进措施,以防止今后同类型事故的再次发生。A 380 V auxiliary motor box motor ground fault occurred in a power plant,causing the power loss of the auxiliary unit′s dual power supply and the unit to stop operation.Improvements are proposed to prevent the recurrence of similar accidents in the future.

关 键 词：接地保护 选择性 越级跳闸 双电源切换 零序保护定值 

分 类 号：TM621[电气工程—电力系统及自动化]