| 电力参数直接交流采样信号的小波消噪方法 |
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| 引用本文： | 张金敏.电力参数直接交流采样信号的小波消噪方法[J].自动化与仪器仪表,2005(6):70-72. |
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| 作者姓名： | 张金敏 |
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| 作者单位： | 兰州交通大学机电工程学院,甘肃,兰州,730070 |
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| 摘 要： | 论述了电力参数交流采样信号的特点,介绍了应用小波分析方法进行信号去噪的基本原理.基于阀值小波变换去除信号高、低频噪声,然后应用小波包分解方法获取信号的特征量从而进行信号的重构,消除瞬态突变干扰信号,并对系统结构和组成进行了分析.实验结果表明：该方法可以有效地进行信号的消噪,并获取真实的采样测量信号.这种方法对其它类似系统也具有一定参考价值.
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| 关 键 词： | 电力参数 交流采样 小波分析 消噪 |
| 文章编号： | 1001-9227(2005)06-0070-03 |
| 收稿时间： | 2005-02-26 |
| 修稿时间： | 2005年2月26日 |
The method of wavelet transform de-noising in AC sampling of power system parameters |
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| Zhang Jinmin.The method of wavelet transform de-noising in AC sampling of power system parameters[J].Automation & Instrumentation,2005(6):70-72. |
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| Authors: | Zhang Jinmin |
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| Abstract: | The characteristic of AC sampling for power systems parameters is analyzed, and the theory of signal de - nosing based on wavelet analysis is presented. Based on the soft threshold wavelet transform, the nosing of high and low frequency is removed. Application of wavelet packet analysis method, the signal characteristic is obtained, the signal structure is structured again, and the signal in a twinkling interfere is removed. The result demonstrates that the method is good for AC sampling signal de - noising. At the same time, it is clear that the wavelet transform method get a satisfactory results. |
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| Keywords: | Power system parameter AC sampling Wavelet analysis De- noising |
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