| 基于最佳小波包基的电能质量暂态数据压缩 |
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| 引用本文： | 潘文霞,李春林,史林军.基于最佳小波包基的电能质量暂态数据压缩[J].电力系统及其自动化学报,2005,17(3):50-54. |
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| 作者姓名： | 潘文霞 李春林 史林军 |
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| 作者单位： | 河海大学电气工程学院,南京,210098;河海大学电气工程学院,南京,210098;河海大学电气工程学院,南京,210098 |
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| 摘 要： | 针对电能质量暂态扰动数据高频分量频率高(最高达到MHz)的特点，在小波压缩技术的基础上，提出将基于最佳小波包基的数据分析方法应用于电能质量数据压缩，利用最佳小波包基的快速搜寻算法对高、低频分量同时进行分解，再对扰动数据进行压缩重构，并将其与基于小波变换的数据压缩方法进行仿真比较。结果表明，在压缩比大致相同的情况下，得到数据的失真率比传统小波的压缩方法低。
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| 关 键 词： | 最佳小波包基 数据压缩 电能质量 |
| 文章编号： | 1003-8930(2005)03-0050-05 |
| 修稿时间： | 2004年6月10日 |
Power Quality Transient Disturbance Compression Based on Optimum Wavelet Packet |
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| PAN Wen-Xia,LI Chun-lin,SHI Lin-jun.Power Quality Transient Disturbance Compression Based on Optimum Wavelet Packet[J].Proceedings of the CSU-EPSA,2005,17(3):50-54. |
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| Authors: | PAN Wen-Xia LI Chun-lin SHI Lin-jun |
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| Abstract: | According to characteristic of the transient disturbance data of power quality whose frequency is very high, this paper put forward a method based on optimum wavelet packet for the compression of transient disturbance data of power quality. Then the fast search algorithm of optimum wavelet packet is used to decompose the parts of high frequency and the parts of low frequency at the same time, and subsequently the signal is compressed and reconstructed. Finally, by comparing with the method based on the wavelet,the conclusion can be drawn that the distortion rate of the former is lower when the compression rates of the both methods are approximately same. |
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| Keywords: | optimum wavelet packet base data compression power quality |
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