| In this paper, firstly, the substation general automation technology and the embedded system are summarized simply. secondly, the special computer algorithms and CAN communicated protocol are introduced. This paper elaborated on the composition of hardware and the devise of software. Finally, the research result is summarized and the follow-up job is prospected.According the special application background about this device to use at power line protection in enterprise substation, the author selected the protective judging basis and algorithms reasonably, determined the protective scheme which adopted current fast break protection, excessive current protection and grounding protection, moreover added the function of automatic switching on, which enhanced the reliability of power supply. The CPU of this device adopted embedded microprocessor 80c196kc.the application of embedded system made the device light and elastic, it can be installed in the field. Hardware and software measure had been adopted to make the device more reliable and improve its ability of anti-interference. The serial communication of this device adopted CAN field bus, this technology made the communication faster and more reliable. |
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