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Power System Harmonics Measurement Window Interpolation Algorithm and the Realization with Matlab

Zhang Yuhuan

Open publisher page 1 citations

Abstract

FFT(Fast Fourier Transform)is a method that applies most extensively of the harmonic measurements.However,if FFT is used directly to harmonic measurement there will be a larger error that affects the accuracy of harmonic analysis.Some efforts have been made to correct the accuracy of frequency,phase and amplitude measured by FFT,including the utilization of window functions and interpolation algorithms.the principle of power grid harmonic detecting non-synchronous sampling window interpolation algorithm was described,based on window function and interpolation algorithms.The results of MATLAB simulation show that the FFT window interpolation algorithm has advantage of high accurate inspection,easy implementation,and various functions;at the same time,also verified the effectiveness and easy implementation of improved algorithm.

About this research paper

What this paper is about

FFT(Fast Fourier Transform)is a method that applies most extensively of the harmonic measurements.However,if FFT is used directly to harmonic measurement there will be a larger error that affects the accuracy of harmonic analysis.Some efforts have been made to correct the accuracy of frequency,phase and amplitude measured by FFT,including the utilization of window functions and interpolation algorithms.the principle of power grid harmonic detecting non-synchronous sampling window interpolation algorithm was described,based on window function and interpolation algorithms.The results of MATLAB simulation show that the FFT window interpolation algorithm has advantage of high accurate inspection,easy implementation,and various functions;at the same time,also verified the effectiveness and easy implementation of improved algorithm.

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Available abstract

FFT(Fast Fourier Transform)is a method that applies most extensively of the harmonic measurements.However,if FFT is used directly to harmonic measurement there will be a larger error that affects the accuracy of harmonic analysis.Some efforts have been made to correct the accuracy of frequency,phase and amplitude measured by FFT,including the utilization of window functions and interpolation algorithms.the principle of power grid harmonic detecting non-synchronous sampling window interpolation algorithm was described,based on window function and interpolation algorithms.The results of MATLAB simulation show that the FFT window interpolation algorithm has advantage of high accurate inspection,easy implementation,and various functions;at the same time,also verified the effectiveness and easy implementation of improved algorithm.

Key concepts: Fast Fourier transform, Window function, Interpolation (computer graphics), Harmonics, Algorithm, MATLAB, Window (computing), Harmonic

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