电流互感器与过电流继电器的接线方式分析

电力系统中的电流互感器的作用是进行电流变换,将大电流变换为标准的小电流,用于测量和保护,测量用的电流互感器二次侧接电流表,保护用的电流互感器二次侧接过电流继电器,电流互感器与过电流继电器的接线方式多种多样,对于不同电压等级的线路,需要采取不同的接线方式,反应不同的故障类型,文章主要阐述电流互感器与过电流继电器的接线方式。

The function of current transformer in power system is to transform current,converting large current into standard small current and used for measurement and protection:the secondary side-connected ammeter of current transformer is used for measurement,while the secondary side-connected over-current relay of current transformer is used for protection.There are many ways to connect current transformer and over-current relay;therefore,for lines with different voltage levels,different wiring modes are required,which reflects different types of fault.This paper mainly describes the connection mode of current transformer and over-current relay.