基于LabView的GPRS数据通信模块开发

论文总字数：22764字

摘 要

本文开发一种数据通信模块，应用于低压用电故障监测中。低压用电监测指的是在低压配电网中，通过算法分析提取各种用电设备的用电信息，再通过本文设计开发的数据通信模块，将故障数据实时传输到系统侧主站，实现对故障数据的实时接收，从而达到辨别用户负荷设备，监测低压用电事故的目的。

首先，研究了低压用电故障监测的背景。研究了故障信号数据提取算法，研究了小波分析算法、基于滑动窗双边的暂态事件监测算法和加权双边变点检测算法在非侵入式故障监测中的应用。通过对比分析总结发现小波算法作为低压用电故障信号提取算法体现出了更加优越的性能。

然后，对低压用电故障监测数据通信模块进行系统设计。先介绍了整个低压用电故障监测系统的总体架构，系统由用户侧主站、故障监测终端、在线式电能质量检测仪、电能表、通讯网络等构成。在此系统基础上，分析其数据通信模块的需求。分析通信网络的选择，经过对比分析，选取无线通信中的GPRS网络，为了达到实时监测的目的，确定了串口通信下位机软件，GPRS网络，上位机中心软件这一数据通信模块结构。

最后实现低压用电故障监测数据通信模块的开发。介绍了GPRS低压用电故障监测数据通信模块开发的硬件平台GPRS DTU，和其工作方式。基于Labview进行软件设计，介绍了开发环境，实现了串口通信下位机软件和上位机中心软件的开发。进行测试，实现对故障数据的传输，完成基于Labview的GPRS低压用电故障监测数据通信模块开发。

关键词：低压用电，GPRS，Labview，数据通信

Abstract

This paper develops a data communication module, used in low-voltage electrical fault monitoring. Low-voltage electrical monitoring refers to electricity customers to install sensors to obtain the total current entrance and terminal voltage, through algorithm analysis extract various electrical equipment, the power of information, and through the design and development of this paper, data communication module, real-time data transmission fault the system side of the main station, receiving real-time fault data to achieve recognition of a user load equipment, low-voltage electrical accident monitoring purposes.

Firstly, the low-voltage electrical fault monitoring in the background. Research on fault signal data extraction algorithm of wavelet analysis algorithm, based on a sliding window bilateral transient event monitoring algorithm and weighted bilateral change detection algorithm used in non-invasive fault monitoring. Summary found wavelet algorithm as a low electrical fault signal extraction algorithm reflects the superior performance through comparative analysis.

Then, the low-voltage electrical fault monitoring data communication module for system design. First introduced the whole low-voltage electrical fault monitoring system overall architecture, the system by the user side of the main station, fault monitoring terminal, line power quality tester, power meter, communication networks, and the like. In this system, based on analysis of the needs of its data communication module. Choice of communication networks, through comparative analysis, select GPRS wireless communications network, in order to achieve real-time monitoring purposes, to determine the serial communication lower computer software, GPRS network, the data center software PC communication module structure.

Finally, the development of low-voltage electrical fault monitoring to achieve data communication module. GPRS introduces low-voltage electrical fault monitoring data communication module developed hardware platform GPRS DTU, and it works. Labview based software design, introduced the development environment to achieve the serial communication lower computer software and PC software development center. Test, to achieve data transmission fault, complete Labview GPRS based data communication and low voltage electrical fault monitoring module development.

Keywords: GPRS DTU, Labview, serial communication, Upper comput

目录

摘要 I

Abstract II

第一章绪论 1

1.1课题背景 1

1.2用电故障监测技术研究意义 2

1.3电力系统数据通信技术发展现状 2

1.4 论文研究内容 3

第二章低压故障检测背景 4

2.1低压配电系统 4

2.1.1低压用电网拓扑结构 4

2.1.2 低压用电网接地方式 4

2.2 低压故障信号提取算法 5

2.2.1 小波分析算法 6

2.2.2基于滑动窗双边CUSUM的暂态事件检测算法 7

2.2.3加权CUSUM双边变点检测算法 9

2.2.4 算法分析对比 10

2.3本章小结 11

第三章低压用电故障监测数据通信模块系统设计 12

3.1低压用电故障监测系统架构 12

3.2低压用电故障监测数据传输模块系统设计 13

3.2.1 数据通信网络选择 13

3.3.2传输层协议的选择 14

3.3.3数据通信模块系统构架 15

3.3本章小结 16

第四章低压用电故障监测数据通信模块装置实现 17

4.1 GPRS DTU通信 17

4.2 Labview软件程序设计 18

4.2.1 Labview开发环境 18

4.2.2基于Labview环境设计下位机软件（串口通信） 20

4.3低压用电故障监测数据通信模块测试运行 23

4.4本章小结 24

第五章总结与展望 25

参考文献 26

致谢 42

第一章 绪论

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