摘要为了满足10kv配电网馈线自动化以及支线保护的需要,10kv分界开关的智能控制器应运而生,来控制线路的真空断路器保护线路,当支线用户侧发生电力故障的时候,能够自动分闸,切断故障线路,保护主干网的正常供电。26090
本文主要研究的是10kv智能分界开关控制器的一个功能模块——电量采集模块。该模块采用ATT7022芯片作为采集芯片,采集PT的电压信号和CT的电流信号,并且计算出电压有效值和电流有效值,然后采用ARM微控制器LPC1778作为主控芯片,可以完成一定精度要求的实时的数据采集和处理。系统主要由核心控制单元,交流采集模块组成。硬件设计包括:选择芯片,设计电路等,软件设计包括:编写驱动程序,封装功能函数等。
经测试,本文研究的电量采集模块能够准确地读取交流信号,计算出有效值,并且结合主控芯片做出基本的控制处理,即判断过流故障还是接地故障,并且给出分合闸信号。
关键词 分界开关控制器 电量采集模块 ATT7022 ARM
毕业论文设计说明书外文摘要
Title The design of electric quantity acquisition module based on ATT7022
Abstract
In order to meet the needs of 10kV automation of distribution feeder and feeder protection, 10kV intelligent demarcation switch controller emerge as the times require,which can control the vacuum circuit breaker in line protection. When the power failure line user side,it can break the brake automatically, cut off the fault line and protect the normal power supply of the main network.
This paper is a module of 10kV intelligent demarcation switch controller -- power acquisition module.This module uses ATT7022 chip as collection chip,which has the function of the voltage signal acquisition from PT and the current from CT.It can calculate the effective value of voltage and current effective value.Using LPC1778 as the main control chip,the real-time data acquisition and processing can be accomplished in a certain precision.. The system is mainly composed of a central control unit and AC acquisition module. The hardware design includes: selection of chip, circuit design etc. The software design includes: driver package, function etc.
After the test,the power acquisition module the paper studies can read the AC signal accurately,and make the switch simply through the main control chip,such as judging the flow fault or grounding fault and giving the switch signal.
Keywords Boundary switch controller Power acquisition module ATT7022 ARM
目 次
1 绪论 1
1.1 课题研究背景及研究意义 1
1.2 国内研究现状 2
1.3 本文主要工作 2
2 系统总体设计 4
2.1 系统需求分析 4
2.2 系统总体设计 4
2.3 本章小结 7
3 系统硬件设计 8
3.1 硬件开发环境介绍 8
3.2 电源模块设计 8
3.3 核心控制模块设计 10
3.4 交流采样模块设计 13
3.5 控制模块设计 17
4 系统软件设计 19
4.1 软件开发环境介绍 19
4.2 主程序设计 19
4.3 交流数据采集程序设计 20 基于ATT7022的电量采集模块硬件设计:http://www.youerw.com/zidonghua/lunwen_20150.html