摘要
以AP1000机组核岛中压电机保护配置为研究对象,对其采用的SEL-710继电保护功能进行分析。其热保护配置中的1 h启动次数、2次启动间隔时间,在特殊工况下将导致辅变或柴油发电机对核岛中压电机的顺序带载失败。针对热保护配置对核电厂纵深防御功能的影响,给出改进方案。该研究成果将对核岛中压电机保护配置和SEL-710的热保护设置等提供参考。
Taking the protection configuration of medium voltage motor in nuclear island of AP1000 unit as the research object,the SEL-710 relay protection function was analyzed.The 1 h start times and the 2 start interval time in the thermal protection configuration will cause the auxiliary transformer or diesel generator to fail the sequence load of the nuclear island medium voltage motor under special conditions.In view of the impact of thermal protection configuration on the defense in depth function of nuclear power plants,an improvement plan was given.The research results would provide reference for nuclear island medium voltage motor protection configuration and SEL-710 thermal protection settings.
作者
唐海燕
TANG Haiyan(Commissioning Department of Sanmen Nuclear Power Co.,Ltd.,Sanmen 317112,China)
出处
《电工技术》
2020年第21期165-167,共3页
Electric Engineering
关键词
电机
保护配置
热保护
纵深防御
motor
protection configuration
thermal protection
defense in depth
