| 基于经验模态分解的电能质量信号消噪新方法 |
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| 引用本文： | 黄浩,胡峰.基于经验模态分解的电能质量信号消噪新方法[J].电工标准与质量,2006,21(4):27-30,37. |
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| 作者姓名： | 黄浩 胡峰 |
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| 作者单位： | 三峡大学电气信息学院 湖北宜昌443002 |
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| 摘 要： | 基于EMD理论,采用一种电能质量信号消噪的新方法,即首先对电能质量信号进行EMD分解,得到一系列的IMF分量和一个剩余分量,根据噪声和信号在不同尺度的IMF分量上的表现特性,分别将其进行阈值处理,再将消噪后的IMF分量重构,从而得到消噪后的电能质量信号.仿真结果表明,该方法的消噪效果较好.
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| 关 键 词： | 电能质量 信号消噪 经验模态分解 固有模态函数 阈值处理 |
| 文章编号： | 1006-7140（2006）04-0027-04 |
| 收稿时间： | 2006-09-10 |
| 修稿时间： | 2006-09-10 |
A New Method of the Power Quality Signal De-noising Based on Empirical Mode Decomposition |
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| HUANG Hao, HU Feng.A New Method of the Power Quality Signal De-noising Based on Empirical Mode Decomposition[J].Journal of Changsha University of Electric Power(Natural Science Edition),2006,21(4):27-30,37. |
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| Authors: | HUANG Hao HU Feng |
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| Affiliation: | College of Electrical Engineering and Information Science, China Three Gorges Universty,Yichang 443002 ,China |
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| Abstract: | Based on the Empirical Mode Decomposition(EMD),this paper employs a new method to remove noise of power quality signals.Firstly,analysis the power quality disturbance signals by EMD,a series of intrinsic mode functions(IMFs) and a residue are gained.Then the IMFs are threshold;finally the de-noised signals are acquired by reconstructing the threshold IMFs.The simulation indicates that this new method has the excellent ability of de-noising;it could obtain wonderful result in dealing with power quality signal de-noising. |
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| Keywords: | power quality signal de-noising empirical mode decomposition intrinsic mode function threshold disposal |
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