| 基于二进小波变换的电能质量暂态信号的检测 |
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| 引用本文： | 柯慧,顾洁. 基于二进小波变换的电能质量暂态信号的检测[J]. 水电能源科学, 2009, 27(3) |
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| 作者姓名： | 柯慧 顾洁 |
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| 作者单位： | 上海交通大学,电子信息与电气工程学院电气工程系,上海,200240 |
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| 摘 要： | 针对暂态电能质量扰动及不易检测的特点,提出一种基于卷积型二进小波变换的电能质量信号定位与检测方法,利用二进小波变换模极大值对应信号的突变点检测电能质量扰动信号,采用Matlab仿真软件对短路故障及电容器投切引起的电压暂态信号进行仿真.结果表明,该法行之有效、尺度定位准确.
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| 关 键 词： | 电能质量 二进小波 暂态信号 检测和定位 模极大值 |
Detection of Power Quality Transient Signal Based on Dyadic Wavelet Transform |
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| KE Hui GU Jie. Detection of Power Quality Transient Signal Based on Dyadic Wavelet Transform[J]. International Journal Hydroelectric Energy, 2009, 27(3) |
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| Authors: | KE Hui GU Jie |
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| Affiliation: | Department of Electrical Engineering;School of Electronic;Information and Electrical Engineering;Shanghai Jiao Tong University;Shanghai 200240;China |
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| Abstract: | Due to the difficult detection of power quality(PQ) disturbances,this paper proposed a method of detection and localization of PQ transient signal based on dyadic wavelet transform.It carries out power quality transient signal detection,using the characteristics that modulus maximum of binary wavelet transform corresponds to abrupt change points of PQ transient disturbance signal.Through the simulation of short-term failures and voltage transient signal caused by capacitor switching,the results show that th... |
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| Keywords: | power quality dyadic wavelet transform transient signal detection and localization modulus maximum |
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