文档介绍：摘要
电能质量监测作为电能质量监控的一个关键环节,在电力系统的运行管理和技术监督中起着很重要的作用,同时也是保证电力系统良好供电质量的必要手段。研发功能强大的电能质量监测系统,使之能详细记录电力系统运行过程中的电能质量指标、监测电能质量污染源,从而为电网电能质量的治理和改善提供了依据,对保证电力系统的安全、经济及稳定运行有着重要的意义。
文章在对电能质量指标及其综合评价方法进行分析的基础上,设计了一种电能质量检测装置,并为其设计了软件程序。
本文提出了一种基于MSP430F449单片机的电能质量检测装置的总体设计方案。系统的硬件设计采用了模块化设计思想,主要包括模拟部分和数字部分。交流信号的同步采样通过锁相倍频电路来实现。系统的软件设计也采用了模块化设计思想,采用具有较高运算速度的FFT算法,包括系统的初始化、所测指标的软件实现以及LCD液晶屏输出界面的设计等。
关键词:电能质量检测;同步采样;FFT ;MSP430F449
Abstract
Power quality monitoring is a key part for the controlling of power quality. It
also play an important role in supervising and managing of power system, and at the same time it is a necessary means for providing better power quality .It is of great importance to research and develop a powerful functions power quality monitoring system, which can note indexes of power quality and can supervise polluting sources during running in detail, then provide evidence for improving and renovating the power quality, and ensure the security, stabilization, economy of the power system.
Based on analyzing of the power quality indexes and its synthetical evaluation methods, this article designs a power quality monitor and its software.
In this paper, a power quality monitoring system based on MSP430F449 was put forward. Blocking method was adopted in designing of the system hardware, which contained analog part and digital part, and synchronous sampling of alternating current signals was realized by Phase-locked and double frequency circuits. Blocking method employing FFT was also adopted in designing of the system software, which included system initializing, software of the measured indexes and interface of the LCD.
Keywords: Survey of Power quality; Synchronous sampling; FFT;MSP430F449
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目录
摘要 I
Abstract II
第1章绪论 1
课题背景及意义 1
国内外研究现状及电能质量监测的发展趋势 1
本文结构 2
第2章系统原理设计 4
交流采样原理 4
电能质量参数算法 5
本章小结 13
第3章系统硬件设计 14
系统的整体方案 14
模拟部分设计 15
数字部分设计 18
本章小结 21
第4章软件部分设计 22
设计原则 22
4.