数字化变电站中测量仪表数据采集系统设计  

Design of data acquisition system for measuring instrument in digital substation

作　　者：刘萍[1] LIU Ping(Guizhou Institute of Technology,Guiyang 550001,China)

机构地区：[1]贵州理工学院,贵州贵阳550001

出　　处：《现代电子技术》2018年第23期44-48,共5页Modern Electronics Technique

基　　金：贵州理工学院立项:黔教本"安全工程专业平台课程教学效果评价信息系统研究与实践"(2016112101);黔科合基础:高压串联限流电抗器节能关键参数优化与动态损耗模型研究([2017]1067)~~

摘　　要：基于STM32处理器的数据采集系统存在采集时延和信号干扰等问题,严重影响了数据采集的精准度。对数字化变电站中测量仪表数据采集系统进行智能化设计,根据系统总体设计框架,设计硬件结构与软件功能。构建系统硬件框图,采用嵌入式处理方式设计ARM Cortex-M3内核处理器,改善信号干扰问题,并设计上位机串口通信电路。制定ARM Cortex-M3处理器指令,根据指令集关系改善传输时延问题,设计数据集中程序判断数据采集情况,并根据采集结果设计人机界面。由实验结果可知,该系统采集精准度最高可达80%,能够满足变电站精准测量仪表数据采集需求。The data acquisition system based on STM32 processor has the problems of signal interference and acquisition delay,which influences the accuracy of data acquisition.Therefore,the intelligent design of data acquisition system for measuring instrument in digital substation is performed.According to the overall design framework of the system,the hardware structure and software function are designed.The embedded processing method is used in the system hardware architecture to design the ARM Cortex-M3 core processor,so as to improve the signal interference.The serial communication circuit of the upper computer is designed.The ARM Cortex-M3 processor instructions are formulated.According to the relation of instruction sets,the transmission delay is improved.The data concentration program is designed to judge the data acquisition,and the human-machine interface is designed according to the acquisition results.The experimental results show that the acquisition accuracy of the system can reach up to 80%,and can meet the data acquisition requirement of the precise measuring instrument in the substation.

关 键 词：数字化变电站 测量仪表 数据采集 信号干扰 采集时延 处理器 

分 类 号：TN911.2-34[电子电信—通信与信息系统] TP311.5[电子电信—信息与通信工程]