Jin Zhang, Guoli Li, Chao Xu, Deyang Shao, Long Jiao
{"title":"Study of harmonic analysis based on improved discrete Fourier transform","authors":"Jin Zhang, Guoli Li, Chao Xu, Deyang Shao, Long Jiao","doi":"10.1109/ICIEA.2016.7604021","DOIUrl":null,"url":null,"abstract":"The continuous expanding of power grid scale brings great a large number of nonlinear elements, which produce the harmonic problem. Discrete Fourier Transform(DFT) is an effective tool for harmonic analysis, but there are hidden the troubles of aliasing, picket fence effect and spectral leakage in DFT, which affect the accuracy of the harmonic analysis. In this paper, DFT has been improved to avoid spectral leakage. This improved algorithm has been experiment validated that it can effectively suppress spectral leakage, creates a balance between accuracy and complexity, and can be applied to a variety of devices.","PeriodicalId":283114,"journal":{"name":"2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICIEA.2016.7604021","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The continuous expanding of power grid scale brings great a large number of nonlinear elements, which produce the harmonic problem. Discrete Fourier Transform(DFT) is an effective tool for harmonic analysis, but there are hidden the troubles of aliasing, picket fence effect and spectral leakage in DFT, which affect the accuracy of the harmonic analysis. In this paper, DFT has been improved to avoid spectral leakage. This improved algorithm has been experiment validated that it can effectively suppress spectral leakage, creates a balance between accuracy and complexity, and can be applied to a variety of devices.
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