基于EP9315的IEC61850-9-2嵌入式系统设计

The embedded system design of IEC61850-9-2 with EP9315

在数字化变电站的调试、运行和维护中,为了掌握变电站的运行状态,对数字化变电站过程层和间隔层通信信息的监测是必需的.基于此,就需要一个系统来检测和分析其通信信息.本文介绍了基于IEC61850-9-2标准的嵌入式系统.根据该检测分析系统的功能需求,采用嵌入式系统设计方法,提出了系统整体方案.采用ARM+Windows CE结构,选用CirrusLogic公司的EP9315(ARM920T内核)作为主控制器构成该检测分析装置的硬件平台.通过外接一片PHY芯片与EP9315内嵌的MAC控制器构成了系统的主要硬件模块——以太网数据接收模块.以Windows CE嵌入式操作系统为支撑,完成了基于IEC61850-9-2标准的采样数据的接收、解析、相关计算和显示等功能的设计与实现.

In order to control the operative state of digitized substation in its test, operation and maintenance, it is necessary to monitor the communication in the process and spacer layer of digitized substation. So the authors need a system to check and analyze the communication. In this paper, the measurement and analysis system introduced is based on the IEC61850-9-2 standard. According to the function and demand of the measurement and analysis device, it adopts embedded system design method, and puts forward the whole system solutions. It uses the ARM ＋ Windows CE structure, and chooses Cirrus Logic＇s EP9315 （ARM920T kernel） as the main controller, which constitutes the hardware platform of the measurement and analysis device. An external PHY chip together with the EP9315 embedded MAC controller, constitutes the system＇s main hardware module-Ethernet data receiving module. With the support of Windows CE embedded operating system and on the basis of IEC61850-9-2 standard, the author has worked out the design and implementation of such functions as the sample data＇s receiving, analysis, correlative calculation and display.