嵌入式电能质量监测系统的设计与实现
发布时间：2019-04-18 22:12
【摘要】：在全球能源紧张的情况下，随着用户对电能需求的持续增长和电力电网规模的扩大，为提高供电效率及减少能源的浪费，实现对电能质量的有效监测和治理变得越来越重要。国外的监测仪器技术先进、精确度高，但价格偏高，不适合我国的国情。国内的测量仪器，功能单一，，受环境和电力波动影响大，且存在不能快速、精确地捕捉电能信息的缺点。 本课题提出一种基于Zigbee技术并利用微处理器S3C2440A和三相电能专用芯片ATT7022B的嵌入式电能质量监测系统。利用高精度计量芯片ATT7022B进行了前端电压及电流、相角等电能质量参数的采集，并运用微处理器S3C2440A构建的核心控制板实现对数据采集的控制和输出。最后利用Zigbee技术进行无线组网实现信息的汇总和存储。 本论文首先论述了电能质量的定义和电能质量问题产生的根源。分析了国内外电能质量监测装置的研究现状，探讨了电能质量的标准和改善措施，并对电能质量的分析给出了一些理论分析方法。根据用户的需求，最后给出了电能质量监测系统的实现方案。硬件设计方面包括前端模拟数据采集板和数字控制板的设计。前端信号采集板以ATT7022B为核心构建包括：电源模块、信号取样模块、校表模块、通信模块等；数字控制板以S3C2440A为核心构建，主要由S3C2440A电路、存储器电路、SPI通信接口电路、串口电路、网口电路等组成。无线网络通信采用顺舟科技的SZ02实现。软件以嵌入式linux系统为核心，修改配置和编写了linux嵌入式操作系统下的相关接口驱动程序。主要完成了前端参数采集、存储和控制软件，并完成SPI通信接口驱动程序的编写。最后完成系统的整体硬件调试和软件调试，系统运行稳定，达到了设计要求。
[Abstract]:Under the circumstance of global energy shortage, it is more and more important to effectively monitor and control the power quality in order to improve the power supply efficiency and reduce the energy waste, along with the continuous increase of users' demand for electric energy and the expansion of power grid scale. Foreign monitoring instruments have advanced technology, high accuracy, but high price, which is not suitable for the national conditions of our country. The domestic measuring instrument has a single function and is greatly influenced by environment and power fluctuation, and it can not capture the electric energy information quickly and accurately. In this paper, an embedded power quality monitoring system based on Zigbee technology and using microprocessor S3C2440A and three-phase power chip ATT7022B is proposed. The power quality parameters such as front-end voltage, current and phase angle are collected by using high-precision metering chip ATT7022B, and the control and output of data acquisition is realized by using the core control board constructed by microprocessor S3C2440A. Finally, Zigbee technology is used to realize the collection and storage of information in wireless networking. This paper first discusses the definition of power quality and the root causes of power quality problems. This paper analyzes the research status of power quality monitoring devices at home and abroad, discusses the standards and improvement measures of power quality, and gives some theoretical analysis methods for the analysis of power quality. According to the demand of users, the realization scheme of power quality monitoring system is given at last. Hardware design includes front-end analog data acquisition board and digital control board design. The front-end signal acquisition board is composed of power module, signal sampling module, calibration table module, communication module and so on based on ATT7022B. The digital control board is composed of S3C2440A circuit, memory circuit, SPI communication interface circuit, serial port circuit, network port circuit and so on. The digital control board is constructed with S3C2440A as the core. Wireless network communication is realized by SZ02. The software takes the embedded linux system as the core, modifies the configuration and compiles the related interface driver under the linux embedded operating system. Mainly completed the front-end parameter acquisition, storage and control software, and completed the SPI communication interface driver program. Finally, the whole hardware debugging and software debugging are completed. The system runs stably and meets the design requirements.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM933.4;TP368.12
本文编号：2460332
[Abstract]:Under the circumstance of global energy shortage, it is more and more important to effectively monitor and control the power quality in order to improve the power supply efficiency and reduce the energy waste, along with the continuous increase of users' demand for electric energy and the expansion of power grid scale. Foreign monitoring instruments have advanced technology, high accuracy, but high price, which is not suitable for the national conditions of our country. The domestic measuring instrument has a single function and is greatly influenced by environment and power fluctuation, and it can not capture the electric energy information quickly and accurately. In this paper, an embedded power quality monitoring system based on Zigbee technology and using microprocessor S3C2440A and three-phase power chip ATT7022B is proposed. The power quality parameters such as front-end voltage, current and phase angle are collected by using high-precision metering chip ATT7022B, and the control and output of data acquisition is realized by using the core control board constructed by microprocessor S3C2440A. Finally, Zigbee technology is used to realize the collection and storage of information in wireless networking. This paper first discusses the definition of power quality and the root causes of power quality problems. This paper analyzes the research status of power quality monitoring devices at home and abroad, discusses the standards and improvement measures of power quality, and gives some theoretical analysis methods for the analysis of power quality. According to the demand of users, the realization scheme of power quality monitoring system is given at last. Hardware design includes front-end analog data acquisition board and digital control board design. The front-end signal acquisition board is composed of power module, signal sampling module, calibration table module, communication module and so on based on ATT7022B. The digital control board is composed of S3C2440A circuit, memory circuit, SPI communication interface circuit, serial port circuit, network port circuit and so on. The digital control board is constructed with S3C2440A as the core. Wireless network communication is realized by SZ02. The software takes the embedded linux system as the core, modifies the configuration and compiles the related interface driver under the linux embedded operating system. Mainly completed the front-end parameter acquisition, storage and control software, and completed the SPI communication interface driver program. Finally, the whole hardware debugging and software debugging are completed. The system runs stably and meets the design requirements.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM933.4;TP368.12
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