| 电力系统二维重组法数据压缩算法 |
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| 引用本文： | 王超,张东来,张斌,李悦. 电力系统二维重组法数据压缩算法[J]. 电工技术学报, 2010, 0(11) |
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| 作者姓名： | 王超 张东来 张斌 李悦 |
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| 作者单位： | 北京市电力公司变电公司,北京,100054;深圳航天科技创新研究院,深圳,518057;哈尔滨工业大学深圳研究生院,深圳,518055 |
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| 摘 要： | 提出了一种新的数据压缩与解压缩算法,针对周期性数据循环内与循环间信息不均衡性,能够在电网频率波动的情况下,通过自动调整采样频率,消除周期性数据循环内与循环间信息耦合,更有效地去除循环间数据冗余性,实现电力系统周期性数据大比率数据压缩。采用了二元线性回归算法对电网频率进行实时预测,提出同步数字倍频法用来产生同步采样脉冲,进而实现等相位同步采样,利用基于提升格式的小波分解对数据等相位点序列分别进行分解与重构,实现数据压缩与解压缩。利用实际测取的电力生产过程中的周期性数据对算法进行验证,试验结果表明,在相同的压缩比下,基于等相位采样的重构效果优于基于等间隔采样的重构效果。
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| 关 键 词： | 数据压缩 小波变换 回归分析 算术编码 |
A 2-D Information Reordering Data Compression Method for Power System |
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| Wang Chao Zhang Donglai Zhang Bin Li Yue. A 2-D Information Reordering Data Compression Method for Power System[J]. Transactions of China Electrotechnical Society, 2010, 0(11) |
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| Authors: | Wang Chao Zhang Donglai Zhang Bin Li Yue |
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| Affiliation: | Wang Chao1 Zhang Donglai2 Zhang Bin2 Li Yue3(1.Shenzhen Academy of Aerospace Technology Shenzhen 518057 China 2.Harbin Institute of Technology Shenzhen Graduate School Shenzhen 518055 China 3.Beijing Electric Power Company Beijing 100054 China) |
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| Abstract: | A novel data compression method was developed for periodical data in power system.Based on the unbalanced nature of information in cycles and between cycles,it can eliminates the coupling of information through automatic adjustment of sampling frequency and achieve large compression ratio.In order to reduce the redundancy more efficiently,a 2 variable linear regression system is developed to predict the frequency of the power system and to realize synchronous sampling.After that,the data is compressed based... |
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| Keywords: | Data compression wavelet transform regression analysis arithmetic coding |
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