| With the development of power system and the improvement of communication protocol, With the development of power system and continuous improvement of communication protocol, automation performance, intelligent level of devices in substation increase correspondingly. The equipments of Power system tend to digit, intelligence, unified model and communication protocols. Intelligent electronic devices in tradition gradually expose the shortcomings which are not overcome easily in the aspects of interoperability, correct rate of movement, communication interface and the compatibility communication protocol. In order to adapt development needs of intelligent IED in the substation, it is very important to have a research on embedded technology in power system.This paper design a IED scheme based on IEC61850protocl to study the communication equipment of interval level which implement the monitoring of substation. Monitoring terminal adopt a high-performance and industrial ARM9microprocessor S3C2440A as the development platform, and achieve its management and communication of system. In this platform, it execute the migration of embedded Linux operating system such as Bootloader, Linux kernel, Linux file system and so on, and write and debug the program of related device drivers.Besides, it can satisfy the multi-tasking, graphical interface display and Ethernet communication. By analyzing samples and communication model in GOOSE of IEC61850, this paper design the program of communication mode and data flow diagram of each module detailedly.In order to achieve compatibility and scalability better between the server-side and the next crew, the next crew introduce embedded micro-processor operating system μC/OS-Ⅱ to achieve the communication with the host computer, digital input and output, samples handling, protection algorithms, control commands and other functions. |
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