| 基于优化小波基的电力故障暂态数据压缩研究 |
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| 引用本文： | 何正友,钱清泉,王晓茹.基于优化小波基的电力故障暂态数据压缩研究[J].西南交通大学学报,2000,35(5):526-530. |
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| 作者姓名： | 何正友 钱清泉 王晓茹 |
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| 作者单位： | 西南交通大学铁道电气化自动化研究所,四川,成都,610031 |
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| 基金项目： | 国家自然科学基金资助项目! (599770 1 9) |
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| 摘 要： | 在论述基于 辨分析的小波基构造方法和小波分解理论的基础上，针对电力故障信号富含瞬时性强、衰减快暂态成分的特点，研究了基于信号离用小波逼近品质，即离散逼近时域二范数最大的小波基优化方法。分析表明，基于优化小波基的离散小波变换对电力故障暂态数据具有较主的压缩比和较小的重构误差。
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| 关 键 词： | 数据压缩 电力系统计算 小波逼近 电力故障 |
A Study on Power Fault Transient Data Compression Based on Optimum Wavelet |
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| HE Zheng-you,QIAN Qing-quan,WANG Xiao-ru.A Study on Power Fault Transient Data Compression Based on Optimum Wavelet[J].Journal of Southwest Jiaotong University,2000,35(5):526-530. |
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| Authors: | HE Zheng-you QIAN Qing-quan WANG Xiao-ru |
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| Abstract: | Based on the discussion of the wavelet construction method and the wavelet decomposition theory of multiresolution analysis, in combination with the features of strong instantaneity and quick attenuation of power fault transients, an optimum wavelet construction method based on maximizing the 2-norm of time domain of discrete wavelet decomposition approximation is studied. Computation indicates that this method applied in the compression of power system fault transient data will increase the compression ratio and decrease the reconstruction error. |
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| Keywords: | data compression optimization power system computation wavelet approximation |
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