| 基于小波变换的电能质量暂态信号检测 |
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| 引用本文： | 郭峰,王刚,董肖节.基于小波变换的电能质量暂态信号检测[J].电子科技,2012,25(8):59-61,66. |
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| 作者姓名： | 郭峰 王刚 董肖节 |
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| 作者单位： | (1.太原理工大学 信息工程学院,山西 太原 030024;2.太原理工大学 物理与光电工程学院,山西 太原 030024) |
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| 摘 要： | 设计了一种基于DSP的电能质量监测系统,并给出了信号调理、锁相倍频等主要模块电路。依据小波变换模极大值的理论,通过对该检测装置采集的暂态信号进行多分辨率分解,准确实现了暂态信号的检测。最后对采集的信号进行Matlab小波变换,仿真结果表明,小波变换可实现对电能质量暂态信号突变点的准确检测,同时验证了小波检测的正确性和可靠性。
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| 关 键 词： | 电能质量 小波变化 Matlab |
Power Quality Transient Signal Detection Based on Wavelet Transform |
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| GUO Feng,WANG Gang,DONG Xiaojie.Power Quality Transient Signal Detection Based on Wavelet Transform[J].Electronic Science and Technology,2012,25(8):59-61,66. |
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| Authors: | GUO Feng WANG Gang DONG Xiaojie |
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| Affiliation: | (1.College of Information Engineering,Taiyuan University of Technology,Taiyuan 030024,China;
2.College of Physics and Optical Engineering,Taiyuan University of Technology,Taiyuan 030024,China) |
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| Abstract: | A DSP-based power quality monitoring system is introduced.Modular circuits for signal conditioning circuit and phase-locked frequency multiplication are also given.According to the modulus maximum theory of wavelet transform coefficient and multi-resolution decomposition of the transient signal which have been collected by the monitoring system,it accurately achieves the detection of the transient signal.Finally,according to the wavelet transform of the signal collected based on MATLAB,the result shows that wavelet transform can accurately detect the point of mutation of the power quality transient signal and testify the accuracy and reliability of wavelet detection. |
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| Keywords: | power quality wavelet transform Matlab |
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