基于DSP的FFT算法在电网谐波检测中的应用  

DSP based on the FFT Algorithm in Power System Harmonic Detection Application

作　　者：丁洁[1,2] 张欣[1] 

机构地区：[1]商丘职业技术学院,河南商丘476000 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《中州大学学报》2013年第1期122-125,共4页Journal of Zhongzhou University

基　　金：湖南省自然科学基金项目(07JJ6134)

摘　　要：谐波检测是研究和分析谐波问题的出发点和主要依据。本文介绍基于数学变换的几种方法并讨论其优缺点,提出了一种实用且成熟的谐波分析方法,并对该算法中出现的问题进行分析从而提出解决方案。该算法采用汇编语言实现,然后用C语言结合每个模块,并采用目前控制领域最高性能的处理器TMS320C5509对采样信号进行FFT(Fast Fourier Transform)运算,可以快速检测电网中的三相电压、电流谐波以进行谐波的实时分析。仿真结果验证了算法的正确性和高速性。Harmonic detection is the research and analysis of harmonic problems in the starting point and main basis. Based on the mathematical transformation methods and discusses their advantages and disadvantages, it puts forward a practical and mature harmonic analysis method, and the algorithm in the paper analyses the problems and proposed solutions. The algorithm uses the assembly language to achieve, and then use the C language binding of each module, and the current control the highest performance processor TMS320C5509 sampled signal FFT opera- tion, can fast detect the grid in the three - phase voltage, current harmonics for harmonic analysis in real time. The simulation results verify the correctness of the algorithm and high speed.

关 键 词：FFT 谐波检测 DSP 仿真 

分 类 号：TM935.21[电气工程—电力电子与电力传动]