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| 摘要: |
| 介绍了基于嵌入式以太网的数字继电保护平台结构,分析了以太网介质访问的特点,讨论了嵌入式以太网在数字保护平台中的应用可行性,围绕通信的实时性提出了几种设计方案,具体包括应用令牌传送协议、应用交换式HUB、改变网络拓扑结构和提高以太网的通信速率等,从继电保护需传送数据具有的特点考虑,兼顾技术和成本的综合比较,最终选择采用令牌传送协议的通信方案,并给出了用以太网控制器CS8900实现以太网通信的硬件设计方案和软件设计流程。 |
| 关键词: 嵌入式以太网,数字继电保护,令牌传送 |
| DOI： |
| 分类号:TM76 TP311.1 |
| 基金项目:江苏省高校自然科学研究项目(03KJA470034) |
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| Implementation of embedded Ethernet on digital protection platform |
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LIN Jian WANG Mu-lan CHEN Xiao-hu
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| Abstract: |
| The digital protection platform structure based on embedded Ethernet is introduced.Its characteristics in medium accessing are analyzed.The application feasibility of embedded Ethernet on digital protection platform is discussed.Several design schemes for real time communication are put forward,including the application of token-passing protocol,the application of switchover HUB,the change of network topology and the enhancement of communication speed.According to characteristics of data transferred in protection and with the comparison in both technique and cost,the communication scheme of token-passing protocol is adopted,and the hardware and software design based on Ethernet controller CS 8900 is provided. This project is supported by the Natural Science Research Project Item of Jiangsu Colleges and Universities(03KJA 470034). |
| Key words: embedded Ethernet,digital protection,token-passing |
