基于9/11小波与EZW算法的电能质量谐波信号二维数据压缩  

9/11 wavelet and EZW algorithm-based power quality harmonic signal 2D data compression

作　　者：崔旭[1] 尹为民[1] 

机构地区：[1]海军工程大学电气与信息工程学院

出　　处：《舰船科学技术》2014年第2期90-96,共7页Ship Science and Technology

摘　　要：介绍电能质量数据的二维图像表示方法,说明该二维图像的相关特点,分析小波消失矩、正则性、紧支性、对称性和正交性对电能质量数据压缩性能的影响。在此基础上运用小波相关理论构造9/11双正交小波,并将9/11小波与EZW编码联合用于电能质量谐波信号的二维数据压缩。最后通过仿真实验证明该方法的可行性。This paper first introduces the two-dimensional image representation method for power quality data, illustrates the characteristics of the two-dimensional image, analyses the influence of vanishing moment, regularity properties, compact support, symmetry and orthogonally of different wavelets to data eompressionproperty. Based onwavelet theory the 9/11 biorthogonal waveletis constructed and used for data compression of two-dimensional harmonic signal power quality with EZW algorithm. Finally, experimental results demonstrate the feasibility of the method.

关 键 词：电能质量 二维数据压缩 小波变换 双正交小波构造 

分 类 号：U664.5[交通运输工程—船舶及航道工程]