摘要由于电力系统中非线性负载数量的增加，到达用户的电能波形往往发生不同程度的畸变。由此产生的大量谐波被进入电网，导致电网的电能质量日益恶化，影响电力系统的稳定性。近年来，许多学者致力于电力系统谐波检测方法的研究，旨在控制电网谐波含量，提升电网中电能的质量。64581

    本文设计的系统主要使用TMS320F2812 DSP，对Matlab产生的模拟信号进行分析、计算。本文首先对基于快速傅里叶变换的电量检测方法进行了分析、介绍，得出了具体计算方法，然后介绍了DSP的硬件特点，介绍了Matlab软件、CCS软件的使用方法及使用过程，最后得出仿真结果并对结果进行分析、验证。

毕业论文关键词：谐波检测 DSP FFT Matlab

毕业设计说明书（论文）外文摘要

Title:   The Research of TMS320F2812-based Power Harmonic Analyzer Design  

Abstract:

As for the increase of nonlinear loads number in the electric system, distortion  usually occurs to different degrees when the power wareform reaches to the users. A great deal of HED caused by that would enter the power network, and resulting in increasing deterioration of electric quality, thus influencing the stability of the electric system. In recent years, many scholars have been studying on the harmonic dectetion method in electric system, in order to control the harmonic content, raising up the electric energy quality in power network.

The system designed in this thesis mainly use TMS320F2812 DSP, analyzing and calculating the analog signal caused by Matlab. Firstly this thesis would analyze and introduce the harmonic dectetion method based on fast Fourier transform , and work out the specific calculation method. Then it would introduce the hardware features of DSP, the application method and procedure of Matlab and CCS. In the end, it would work out the simulation result, analyze and test the result.

Keyword： Harmonic Detection  DSP  FFT  Matlab

目     次

1 引言 - 1 -

1.1 研究背景 - 1 -

1.2 研究方法及意义 - 6 -

1.3 内容安排 - 9 -

2 电力谐波检测系统总体方案 - 10 -

2.1 电力谐波原理分析 - 10 -

2.2 基于 谐波计算的原理 - 11 -

2.3 总体设计方案 - 14 -

2.4 本章小结 - 16 -

3 电力谐波检测系统硬件部分 - 17 -

3.1 DSP简介 - 17 -

3.2 TMS320F2812简介 - 17 -

3.3 DSP实验箱简介 - 18 -

3.4 本章小结 - 19 -

4 电力谐波检测系统的软件部分 - 20 -

4.1 Matlab软件设计 - 20 -

4.2 软件设计 - 22 -

4.3 本章小结 - 30 -

5 谐波检测调试 - 31 -

5.1 调试目的 - 31 -

5.2 调试方法 - 31 -

5.3 电参量测量实验 - 31 -

5.4 本章小结 - 44 -

6 结束语 - 45 -

1 引言

1.1 研究背景