A Signal Reconstruction Method Based on Quadratic Spline Interpolation Applied in Power Quality Analysis for SCM-TTU

Aiming at the accurate and quick analysis of power quality especially of harmonic problem in power system, interpolation approaches should be applied if the samples collected by hardware are not matched with Fast Fourier Transform (FFT) calculation. A quadratic spline interpolation algorithm is prop...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1626; no. 1; pp. 12055 - 12061
Main Authors Deng, Siyang, Liu, Zhu, Huang, Lvchao
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2020
Subjects
Algorithms
Continuity (mathematics)
Fast Fourier transformations
Fourier transforms
Harmonic analysis
Harmonics
Interpolation
Mathematical analysis
Physics
Power quality
Quadratic spline interpolation
SCM-TTU
Signal reconstruction
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ISSN1742-6588
1742-6596
1742-6596
DOI10.1088/1742-6596/1626/1/012055

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Summary:Aiming at the accurate and quick analysis of power quality especially of harmonic problem in power system, interpolation approaches should be applied if the samples collected by hardware are not matched with Fast Fourier Transform (FFT) calculation. A quadratic spline interpolation algorithm is proposed on Single Chip Micyoco-Transformer Terminal Unit (SCM-TTU) in this paper. This algorithm considers the continuous of interpolation function and also the first derivative in order to improve the accuracy. It could be applied before FFT calculation to avoid the mismatch of sampling rates. A simulation with mathematic example and also an application with SCM-TTU contains the harmonics from 2nd to 50th orders are experimented, results are presented to show the effectiveness.
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ISSN:1742-6588
1742-6596
1742-6596
DOI:10.1088/1742-6596/1626/1/012055