CAN总线在微机保护装置中应用

Application of CAN-bus in micro-computer protection

介绍了基于ISA300CAN网保护测控通信规约的保护装置,实现了上、下位机的联调。上位机采用PCICAN9810CAN卡,其接口可直接连接于总线;软件基于VB编程软件,采用SQLServer作为数据库服务器软件。下位机硬件采用TMS320LF2407自带的CAN控制器,软件基于微机控制系统(CCS)编程。初步的测试结果表明,该系统在对微机保护装置的监控方面,测量精度满足行业要求,能实现远方遥控、远程遥测、状态量遥信、在线修改定值、事件上传等基本功能。

A kind of protective equipment is introduced,which applies ISA300 CAN（Control Area Network） measurement and control communication protocol in its interconnection with superordinate computer. The super-ordinate computer utilizes PCICAN 9810 CAN card as its communication interface ,directly connecting with bus. With SQL（Structured Query Language） Server as database software,its application software is programmed with Visual Basic. The protective equipment utilizes CAN controller as its communication interface ,which is in-side DSP（Digital Signal Processor） TMS 320LF 2407 ,and its application software is programmed with CCS（Computer Control System）. Preliminary experiment results demonstrate that the measurement accuracy conforms to industrial requirements and fundamental functions are realized,such as tele-control,tele-metering,tele-signalling, online setting modification,event information upstream transmission,and so on.