现代电力2012，Vol.29Issue(5)：28-31,4.
基于加窗插值FFT算法的间谐波检测方法研究
Research on Inter-harmonic Detection Using Windows and Interpolated FFT Algorithm
王晓亮 1李娜1
作者信息
- 1. 山东大学电气工程学院,山东济南250061
- 折叠
摘要
Abstract
The inter-harmonics in power grid may cause negative influence on power quality and power supply reliability, so the accurate detecting of inter-harmonics is important for the stable operation of the power system. According to the inter-harmonics characteristics, based on the FFT algorithm, interpolation FFT algorithm was proposed to detect inter-harmonics. Through the analysis of the characteristics of different window functions, Hanning window is selected as the analysis window, and the window-length and the sampling period are determined, which can detect harmonics and inter-harmonics accurately. Besides, FFT algorithm and interpolation FFT algorithm are simulated by MATLAB. By contrasting and analyzing the estimated results of frequency and amplitude, it can be seen that the windows and interpolated FFT algorithm can detect harmonics and inter-harmonics of a given signal much more accurately.关键词
间谐波/傅里叶变换/快速傅里叶变换/加窗插值Key words
inter-harmonics/ Fourier transform/ FFT/ windows and interpolated FFT分类
信息技术与安全科学引用本文复制引用
王晓亮,李娜..基于加窗插值FFT算法的间谐波检测方法研究[J].现代电力,2012,29(5):28-31,4.
