一种加Nuttall窗三谱线插值FFT谐波检测算法  

A Nuttall window three spectral line interpolation FFT harmonic detection algorithm

作　　者：李平[1] 李源[2] 孔银昌[3] 

机构地区：[1]黄淮学院信息工程学院,河南驻马店463000 [2]国网重庆市电力公司信息通信分公司,重庆400014 [3]黄淮学院文化传媒学院,河南驻马店463000

出　　处：《电子技术应用》2017年第5期41-43,共3页Application of Electronic Technique

摘　　要：为获取电网中的谐波量的精准估测,给出采用Nuttall窗体模式的FFT方法。为获取波形的突变部分,采用小波变化检测数据的暂态状况。为判断方法的性能,选取MATLAB进行仿真实验,结果表明检测所得的幅值和相位结果较为精确,并且得到拟合层级仅作用于基波检测结果。In order to obtain the accurate estimation of harmonics in power system, this paper presents the FFT method using Nut- tall forms. In order to obtain the abrupt change of waveform, the wavelet transform is used to detect the transient state of the data. In order to judge the performance of this method, we select MATLAB to simulate the experiment. The results show that the ampli- tude and phase of the test results are more accurate, and the fitting level is only the result of fundamental wave detection.

关 键 词：谐波 Nuttall FFT 小波变化 MATLAB 幅值 

分 类 号：TP407.6[自动化与计算机技术]