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Harmonic Analysis of Power System Based on FFT

Yingli Cao

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Abstract

Aiming at the spectrum leakage problem when analyzing power system harmonic adopting Fast Fourier Transform(FFT),the validity of decreasing leakage by using add window algorithm was put forward.In the study,the FFT algorithm based on hanning window in Matlab environment enhanced the harmonic frequency and accuracy.The simulation example showed that: the FFT algorithm based on hanning window could get ideal effect in detecting network harmonic wave.

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What this paper is about

Aiming at the spectrum leakage problem when analyzing power system harmonic adopting Fast Fourier Transform(FFT),the validity of decreasing leakage by using add window algorithm was put forward.In the study,the FFT algorithm based on hanning window in Matlab environment enhanced the harmonic frequency and accuracy.The simulation example showed that: the FFT algorithm based on hanning window could get ideal effect in detecting network harmonic wave.

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Available abstract

Aiming at the spectrum leakage problem when analyzing power system harmonic adopting Fast Fourier Transform(FFT),the validity of decreasing leakage by using add window algorithm was put forward.In the study,the FFT algorithm based on hanning window in Matlab environment enhanced the harmonic frequency and accuracy.The simulation example showed that: the FFT algorithm based on hanning window could get ideal effect in detecting network harmonic wave.

Key concepts: Fast Fourier transform, Window function, MATLAB, Window (computing), Harmonic, Leakage (economics), Split-radix FFT algorithm, Spectral leakage

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