一种加Nuttall窗三谱线插值FFT谐波检测算法

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。...

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Bibliographic Details
Published in电子技术应用 Vol. 43; no. 5; pp. 41 - 43
Main Author 李平 李源 孔银昌
Format Journal Article
LanguageChinese
Published 黄淮学院信息工程学院,河南驻马店,463000%国网重庆市电力公司信息通信分公司,重庆,400014%黄淮学院文化传媒学院,河南驻马店,463000 2017
Subjects
FFT
MATLAB
Nuttall
小波变化
幅值
谐波
amplitude
谐波
FFT
wavelet transform
幅值
小波变化
MATLAB
harmonic
Nuttall
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ISSN0258-7998
DOI10.16157/j.issn.0258-7998.2017.05.009

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Summary: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。
Bibliography:Li Ping1, Li Yuan2, Kong Yinchang3 （1. School of Information Engineering, Huanghuai University, Zhumadian 463000, China ; 2.State Grid Chongqing Electric Power Company Information and Communications Branch, Chongqing 400014, China; 3.School of Culture and Communication, Huanghuai University ,Zhumadian 463000, China）
harmonic ; Nuttall ; FFT ; wavelet transform ; MATLAB ; amplitude
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.
11-2305/TN
ISSN:0258-7998
DOI:10.16157/j.issn.0258-7998.2017.05.009