棒电源系统发电机差动保护优化  

Optimization of Generator Differential Protection of the CRDM Power Supply System

作　　者：许亮 XU Liang(Jiangsu Nuclear Power Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]江苏核电有限公司,江苏连云港222000

出　　处：《电工技术》2022年第6期53-55,共3页Electric Engineering

摘　　要：某核电站调试过程中,通过提棒操作对差动电流进行录波试验,发现棒电源系统中差流较大,系统存在差动保护误动可能性。结合对差流较大原因的分析,提出通过提高差动保护继电器动作门槛值进行优化,降低差动保护误动风险,提升棒电源系统发电机差动保护可靠性,同时为华龙一号等同型号设备调试优化提供优化借鉴。During the commissioning of a nuclear power plant,through the wave recording test of differential current by rod lifting operation,it is found that the differential current in CRDM power supply system is large,and the system has the possibility of differential protection misoperation.Combined with the analysis of the reasons for the large differential current,it is proposed to optimize the operation threshold of the differential protection relay,reduce the risk of misoperation of the differential protection,and improve the reliability of the differential protection of the generator in the rod power system.At the same time,it provides optimization reference for the commissioning and optimization of HPR1000 equipment of the same model.

关 键 词：棒电源系统 差动保护误动 电流互感器特性差异 

分 类 号：TM623[电气工程—电力系统及自动化]