摘要
介绍了以ARM微控制器为核心的配电变压器监测终端的设计方案。该配变终端以LPC2138芯片为核心处理器,结合电能专用计量芯片ATT7022B,可对配电变压器的参数进行采集,通过PLC模块可与主站保持通信,还可以通过RS-485接口与低压载波系统集抄器相连,对低压用户电表进行统计监测。文章介绍了终端系统的硬件与软件设计,对主要芯片LPC2138,ATT7022B等的特点和功能进行了详细介绍,分析了系统的主要工作流程,详细介绍了专用芯片ATT7022B的全数字校表功能。利用此终端对配电变压器进行监测,可以实时准确地采集配电变压器的数据,即时进行故障检测与报警显示,提高了配电变压器的工作效率,减少了排除故障的时间。
This article describes the design of a transformer terminal unit(TTU) based on ARM micro-controller.Using LPC2138 chip as processor and combined with dedicated energy measurement chip ATT7022B,the terminal has the functions of collecting the parameters of the transformer,communicating with master station by power line carrier communication(PLC) module,connecting the remote metering reading equipment of low-voltage carrier system through RS485 interface,as well as monitoring the power meters of low voltage users.The article introduces the hardware and software design of TTU,discusses the features and functions of LPC2138 and ATT7022B chips including the functions and procedures of all-digital meter adjustment of chip ATT7022B,and analyses the main work flow of the system.The application of the terminal shows that it can collect the data from the distribution transformer accurately,and detects the faults and gives out alarm display in real time.It greatly improves the work efficiency,reduces the troubleshooting time,and eventually brings benefits for power utilities.
出处
《电力系统通信》
2010年第4期28-31,共4页
Telecommunications for Electric Power System
作者简介
谢志远（1964-），男，河北辛集人，教授，从事通信与信息系统的研究。
马明（1986-），女，河北保定人，硕士研究生，从事信号与信息处理的研究。
郭以贺（1979-），男，河北玉田人，讲师，从事电力系统通信和配电网自动化的研究．
