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Research on Harmonic Detection System Based on Wavelet Packet Transform
Author(s) -
Can Yang,
Lan Ban
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1314/1/012038
Subject(s) - wavelet packet decomposition , harmonic wavelet transform , wavelet , second generation wavelet transform , wavelet transform , stationary wavelet transform , harmonic , discrete wavelet transform , harmonics , computer science , constant q transform , electronic engineering , algorithm , signal (programming language) , mathematics , artificial intelligence , acoustics , physics , engineering , electrical engineering , voltage , programming language
This paper introduces the basic concepts of harmonics in power system, and expounds the basic principles of harmonic detection algorithms such as Fourier transform, short wavelet transform and wavelet packet transform. The effectiveness of the proposed algorithm is verified by simulation, which shows that the improved wavelet packet algorithm can achieve the uniform division of the harmonic signal frequency band, and improve the detection accuracy of the harmonic signal. Wavelet packet transform could detect the fundamental and harmonic components of the original signal, which is most suitable for the detection of harmonic signals.