Novel Three-Point Interpolation DFT Method for Frequency Measurement of Sine-Wave

被引：48
|
作者：
Wen, He [1 ]
Li, Chengcheng [1 ]
Tang, Lu [1 ]
机构：
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China
来源：
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS | 2017年 / 13卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Frequency measurement; interpolated discrete Fourier transform (DFT); maximum sidelobe decay window (MDW); noise; MULTIFREQUENCY SIGNAL; FOURIER-TRANSFORM; POWER-SYSTEMS; NOISY SIGNALS;
D O I：
10.1109/TII.2017.2681690
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper proposes a novel three-point interpolation discrete Fourier transform for accurate power system frequency measurement. The accurate formula of the proposed frequency measurement method is derived by using the maximum sidelobe decay windows. Moreover, the influence of white noise on the proposed frequency measurement is analyzed by deducing the expression of frequency measurement variance. The systematic errors and variances of frequency measurement are analyzed by simulation.
引用
收藏
页码：2333 / 2338
页数：6
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