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基于时频分析算法的电路谐波检测

更新时间:2020-07-03 06:50:27 大小:257K 上传用户:守着阳光1985查看TA发布的资源 标签:时频分析电路谐波检测 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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谐波检测的准确性直接影响电网谐波污染状况的评估。针对传统时频分析算法检测谐波存在的缺陷,提出了一种改进的时频分析算法对谐波进行检测。本文介绍了小波-JADE融合算法对含有噪声的三相电流信号降噪,并利用小波-FastICA融合算法监测并剔除信号的奇异点。仿真实验结果表明:该方法能更好地实现谐波降噪,同时准确地检测出谐波信号的奇异点,提高了谐波检测的准确性。

Assessment of the pollution of harmonic is directly impacted by the accuracy of harmonic detection. Aiming at the defects of traditional time frequency analysis algorithm detecting harmonic, the paper applies an improved time frequency analysis algorithm to detect the harmonic in the power. The three-phase current signals collected are de- noised by wavelet-JADE algorithm and detected and eliminated singular point by wavelet-FastICA algorithm. It is shown in this experiment that the complex harmonic detection algorithm can make the harmonic denoised better, at the same time it can accurately detect the singular point and improve the accuracy of the harmonic detection.

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基于时频分析算法的电路谐波检测.pdf 257K

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