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    ASIA unversity > 資訊學院 > 資訊工程學系 > 期刊論文 >  Item 310904400/8967


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/8967


    Title: An Accurate Time-Domain Procedure for Harmonics and Interharmonics Detection
    Authors: G. W. Chang;C. I Chen
    Keywords: Accuracy;Downsampling;Estimation;Frequency estimation;Harmonic analysis;Power system harmonics;Prony's method;Signal resolution;harmonics;interharmonics;singular value decomposition (SVD)
    Date: 2009
    Issue Date: 2010-04-15 13:42:31 (UTC+8)
    Abstract: Frequency is an important indicator for the quality of electric power. Accurate spectral decompositions rely much on the correct identification of frequencies of the measured signals. An efficient procedure that includes a high-resolution Prony-based method in conjunction with the downsampling technique for harmonics and interharmonics detection of the measured power signal is proposed in this paper. It is shown that even when two or more closely adjacent spectral lines are present, the proposed method can precisely detect the harmonic and interharmonic components. The performance of the proposed method is validated by testing the simulated and actual measured power signals. Results are compared with those obtained by fast Fourier transform with and without synchronization, IEC subgrouping method, and other commonly used linear prediction approaches adopted in the Prony's method. It shows that the proposed method is more accurate on the detection of harmonics and interharmonics with high resolution.
    Relation: IEEE Transactions on Power Delivery 99:1
    Appears in Collections:[資訊工程學系] 期刊論文

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