| With the rapid development of economy of our country, the requirement of the electric power increase quickly in all enterprises, and the demanding of the electric quality is becoming more and more at the same time. So it becomes a serial problem for improving the electric quality by enhancing the controlling and scouting the electric power system. The technology of the protecting by microcomputer is very important for controlling and scouting, special the fast development in software and hardware technology for microcomputer by recently years, it shows more and more energy.The technology of the protecting by microcomputer is that real time scouting the object's voltage and current that wanted to be scouted by people used the devices that the microcomputer inside, and then bases some mathematic formula to judge whether the electric failure happen, finally operates correspond step to protect the object that needed to be protected depending on which kinds of the electric failures.Anciently, because of caring the aspect of the real time, so many these kinds software designed using the Assembler language, though it may cause the problem of maintenance the code. The software of the device is designed by C and Assembler languages and includes a real time operation system. Both them will make the software no only be more efficiency but also easily maintenance. On the other hand, one of the difficulties in studying the technology of the protecting by microcomputer is the improving the arithmetic of the protecting, and if want to improve the arithmetic of the protecting, it must need a test plat roof. The realization of the device can provide the software and hardware test plat roof for testing the arithmetic of the protecting.The contains of the paper cover the software of the device, the hardware of the device, the arithmetic of the protecting, the protocol of the communications, and how to port the embed operation system ofμCOS-Ⅱto 80C196KC system.
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