发电机定子接地保护动作分析及防范措施  

Analysis and preventive measures of generator stator ground fault protection action

作　　者：吴建福 周移华 

机构地区：[1]国电丰城发电有限公司,江西丰城331100

出　　处：《电力系统保护与控制》2010年第5期111-114,131,共5页Power System Protection and Control

摘　　要：介绍某电厂三起发电机定子接地保护信号报警、动作跳闸事件。重点介绍了事件处理情况,对事件发生原因进行了分析和判断,提出相应的防范措施。发电机出现定子接地故障报警后,应根据现场保护及设备动作情况,及时分析原因,做出准确判断,快速消除设备隐患,保障机组和电网安全运行。This paper introduces three cases of generator stator ground fault protection signal alarm and tripping incident in a power plant. It focuses on the handling of the event, analyzes and judges the causes of the incident, and puts forward the corresponding preventive measures. When generator stator earth fault alarm occurs, it needs to accord with protection equipment operation on site and promptly analyze the causes to make accurate judgements and eliminates the fault, so as to guarantee the safety operation of the generator and power grid.

关 键 词：定子接地 保护 三次谐波 措施 

分 类 号：TM31[电气工程—电机]