电能质量信号的三维数据压缩  

Three-dimensional Data Compression of Power Quality Signal

作　　者：崔旭[1] 尹为民[1] 欧阳华[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北武汉430033

出　　处：《计算技术与自动化》2014年第2期108-111,共4页Computing Technology and Automation

基　　金：国家自然科学基金项目(51177168)

摘　　要：为提高电能质量数据的压缩性能,满足低压缩比下高信噪比的工程要求,采用三维表示方法重构电能质量数据,利用三维小波分解与3D-SPIHT编码算法对七种典型的电能质量扰动信号的三维数据块进行压缩编码,并与传统SPIHT算法结果对比。实验证明三维压缩方法的优越性,在相同码率的条件下三维压缩方法具有更高的信噪比。在此基础上确定七种电能质量扰动信号在当前实验环境下的极限比特率与极限压缩比,分析信号特点对压缩比的影响。In order to improve power quality data compression performance and meet the low compression ratio under high SNR engineering requirements,reconstruct the power quality data representation in three dimensional,use three dimensional wavelet decomposition and code seven kinds of typical power quality signal with 3D-SPIHT coding algorithm,compared the results with the traditional SPIHT algorithm.Experimental results show the superiority of the compression method in the same condition rate dimensional compression method has higher SNR.Determine the ultimate bpp and the ultimate compression ratio of seven kinds of power quality disturbance signal in the current experimental environment.Finally,analyze the relationship between the signal characteristics and the compression ratio.

关 键 词：电能质量 三维数据压缩 三维小波变换 三维小波编码算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]