A communication-capable intelligent current relay based on microprocessor and CAN bus was designed, which realized functions combined with electromagnetic current relay, time rely and signal relay. The designed communication-capable intelligent current relay has limit speed cutting function , can realize the communication between fieldwork electric appliance and PC computer. The parameters of the system can be set and changed according to our requirement, so the functions of remote regulating and distance control can be realized. The relay has high performance and perfect function and also meets the request of electrical power system.%通过对一种基于微处理器和CAN总线可通信智能电流继电器的设计,实现了传统的限时速切继电保护功能需要电磁式电流继电器、时间继电器和信号继电器组合在一起才能实现的功能.在此设计的可通信智能电流继电器,不仅能够完成限时速切功能,还可实现现场电器与上位机实现双向通信功能,可对继电器的动作参数(电流值、时间值)进行显示、设定和修改,通过总线系统实达到遥调、遥控的目的,进一步使得继电器的性能得到提高,满足电力系统的要求.
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