某核电站调试期间主泵电机零序保护异常跳闸分析  

Analysis of Abnormal Trip of Zero Sequence Protection of Main Pump Motor During Commissioning of a Nuclear Power Plant

作　　者：段野[1] DUAN Ye(Jiangsu Nuclear Power Plant SMB,Lianyungang 222000,China)

机构地区：[1]中国核电江苏核电有限公司,江苏连云港222000

出　　处：《电工技术》2022年第19期119-119,124,共2页Electric Engineering

摘　　要：结合某核电站3、4号机调试期间主泵电机保护异常跳闸现象,对故障原因进行了分析,发现这是零序电流互感器的安装位置选择不合适,产生的较大零序电流使得零序保护无法躲过导致的,并提出了解决办法,为以后相关调试工作积累了丰富经验。During the commissioning of unit 3 and unit 4 of a nuclear power station,the motor protection of the main pump tripped abnormally.The cause of the fault is analyzed,and it is found that the installation position of the zero-sequence current transformer is not suitable,and the large zero-sequence current generated makes the zero-sequence protection unable to escape.The solutions are put forward,which accumulated rich experience for relevant commissioning work in the future.

关 键 词：异常跳闸 零序保护 不平衡电流 磁场 互感器 

分 类 号：TM623[电气工程—电力系统及自动化]