秦山第二核电厂发电机电流互感器运行分析及改进措施

电流互感器是发电机 /变压器组保护的重要组成部分。认真选择、校验电流互感器的参数是抑制继电保护“拒动、误动”的反事故措施。既要考虑电流互感器在正常工况下具有良好的传变特性 ,又要充分考虑事故状态下的热稳定、冗余度 ,因地制宜采取行之有效的技术措施。

Analysis on Operation of Current Transformer of Generator in Qinshan No.2 Nuclear Power Station with Improving Measures

The current transformer is an important composition in protection of generator/transformer units. Carefully selecting and checking the parameters of CT is the measures against its failure to suppress the "operation rejection and misoperation" of the relay protection. The consideration should be given fully to not only the good transfer property of CT under normal conditions, also its thermal stability and margin under failure conditions. The technical measures should be taken in accordance with the time and place effectively.