| 基于小波去噪和扩展Prony算法的谐波检测 |
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| 引用本文： | 储珺,马建伟,石东耀.基于小波去噪和扩展Prony算法的谐波检测[J].信息技术,2008,32(8). |
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| 作者姓名： | 储珺 马建伟 石东耀 |
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| 作者单位： | 1. 河南科技大学电子信息工程学院,洛阳,471003
2. 洛阳凯迈电子有限公司,洛阳,471003 |
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| 摘 要： | 运用扩展Prony算法对电力系统中含谐波、间谐波信号进行检测,通常实际信号中叠加有随机噪声;由于Prony算法对噪声敏感,采用小波软阈值法对信号进行去噪预处理,保留信号的特征信息,计算结果表明,采用小波软阈值法对信号进行预处理,有利于提高扩展Prony算法对谐波和间谐波信号提取的精确性.
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| 关 键 词： | 小波软阈值 Prony算法 去噪 谐波检测 |
Harmonic measurement based on wavelet denoise and extending Prony arithmetic |
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| CHU Jun,MA Jian-wei,SHI Dong-yao.Harmonic measurement based on wavelet denoise and extending Prony arithmetic[J].Information Technology,2008,32(8). |
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| Authors: | CHU Jun MA Jian-wei SHI Dong-yao |
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| Affiliation: | CHU Jun1,MA Jian-wei1,SHI Dong-yao2 (1.School of Electronic Information Engineering,Henan University of Science & Technology,Luoyang 471003,China,2.Cama(Luoyang) Electronics CO.,LTD.,China) |
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| Abstract: | This paper detects the harmonic and inter-harmonic of power system by extending Prony arithmetic.The actual signals usually includes stochastic noise; Prony arithmetic is sensitivity to noise,adopts signal denoising pretreatment by wavelet soft threshold and reserves the characteristic informations. The analysis results show that signal pretreatment by wavelet soft threshold is in favor of enhancing the analysis accuracy at harmonic and inter-harmonic detected by extending Prony arithmetic. |
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| Keywords: | wavelet soft threshold Prony arithmetic denoising harmonic detection |
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