| 基于双曲S变换的电能质量信号降噪新方法 |
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| 引用本文： | 焦尚彬,黄璜,张青.基于双曲S变换的电能质量信号降噪新方法[J].电网技术,2011,35(9):105-110. |
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| 作者姓名： | 焦尚彬 黄璜 张青 |
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| 作者单位： | 西安理工大学自动化学院,陕西省西安市,710048 |
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| 基金项目： | 陕西省自然科学基金资助项目(2009JQ7009); 陕西省教育厅专项基金资助项目(2010JK750); 西安理工大学科技创新计划的资助 |
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| 摘 要： | 为了更好地分析、检测电力系统中电能的质量,首先要降低电能质量信号中的噪声.利用S变换具有优秀时频呈现能力和时频分辨率的特点,采用双曲窗函数,把电能质量有用信号以及噪声信号变换到相空间,将带噪声的信号分解到时间域和频率域,在给定的一个时间段内对信号的频率进行压制,给定权值为0～1,对边界进行插值平滑处理.然后通过S反变换...
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| 关 键 词： | 电能质量 双曲S变换 S反变换 降噪 |
A New Hyperbolic S-Transform Based Denoising Method of Power Quality Signals |
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| JIAO Shangbin
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HUANG Huang
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ZHANG Qing.A New Hyperbolic S-Transform Based Denoising Method of Power Quality Signals[J].Power System Technology,2011,35(9):105-110. |
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| Authors: | JIAO Shangbin HUANG Huang ZHANG Qing |
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| Affiliation: | JIAO Shangbin,HUANG Huang,ZHANG Qing(School of Automation,Xi'an University of Technology,Xi'an 710048,Shaanxi Province,China) |
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| Abstract: | To better analyze and detect power quality of power system,firstly it is necessary to reduce the noise in power quality signals.In view of the advantages of S-transform that it possesses the ability of perfectly unfolding time-frequency characteristics and high time-frequency resolution,by use of hyperbolic window function the useful signals and noise signals of power quality are transformed into phase space and the signals containing noise are decomposed into time-domain and frequency domain,then in a give... |
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| Keywords: | power quality hyperbolic S-transform inverse S-transform denoising |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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