| 基于压缩传感理论的绝缘子泄漏电流数据压缩 |
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| 引用本文： | 陈青,黄建才,朱永利.基于压缩传感理论的绝缘子泄漏电流数据压缩[J].电力科学与工程,2010,26(7):1-4. |
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| 作者姓名： | 陈青 黄建才 朱永利 |
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| 作者单位： | 华北电力大学,控制与计算机工程学院,河北,保定,071003 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 绝缘子泄漏电流数据量大,给监测系统数据存储和传输带来巨大的负担.针对这个问题,提出基于压缩传感理论(Compressed Sensing,CS)的数据压缩方法,CS将采样与压缩合并进行,少量采样就能很好地恢复信号,不仅降低对硬件要求,而且提高压缩效率.将泄漏电流信号进行小波变换的稀疏分解,然后对稀疏的泄漏电流信号进行高斯测量编码,最后应用正交匹配追踪算法(OMP)重构信号.实验结果表明,对绝缘子泄漏电流进行CS数据压缩具很高的压缩比,恢复的信号也比较理想.
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| 关 键 词： | 压缩传感理论 泄漏电流 小波变换 高斯观测矩阵 正交匹配 |
Data Compression of Insulator Leakage Current Based on the Compressed Sensing |
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| Chen Qing,Huang Jiancai,Zhu Yongli.Data Compression of Insulator Leakage Current Based on the Compressed Sensing[J].Power Science and Engineering,2010,26(7):1-4. |
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| Authors: | Chen Qing Huang Jiancai Zhu Yongli |
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| Affiliation: | Chen Qing,Huang Jiancai,Zhu Yongli(School of Control and Computer Engineering,North China Electric Power University,Baoding 071003,China) |
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| Abstract: | The huge data of insulator leakage current increases the burden of data storage and transmission in the monitoring system.Aiming at this problem,the paper puts forward data compression based on the compressed sensing.Compressed Sensing(CS) combines sampling and compression with a small amount of sample to reconstruct signal well,which not only reduces hardware requirements but also improves compression efficiency.First leakage current was decomposed by Wavelet Transform.Then adopted Gaussian observation mat... |
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| Keywords: | compressed sensing leakage current wavelet transform Gaussian observation matrix orthogonal matching |
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