电网技术2011，Vol.35Issue(10)：130-134,5.
三相电能质量数据压缩方法
A Method to Compress Three-Phase Power Quality Data
摘要
Abstract
A new image coding algorithm-based method to compress three-phase power quality （PQ） data is proposed. Firstly, the three-phase PQ data is transformed by dq0 transformation to eliminate the redundancy among three-phase data; then according to the periods that are the integral multiple of fundamental, the transformed one-dimensional PQ data is changed into two-dimensional matrix to eliminate the redundancy among cyclings; finally, combined with two-dimensional discrete wavelet transform in lifting scheme, image set partitioning in hierarchical tree （SPIHT） coding and DEFLATE coding algorithm the data compression is performed. Experimental results show that the proposed method can effectively compress three-phase PQ data.关键词
电能质量/数据压缩/dq0变换/小波变换/多级树集合分裂编码Key words
power quality/data compression/dq0 transform/wavelet transform/set partitioning in hierarchical tree （SPIHT） coding分类
信息技术与安全科学引用本文复制引用
管春,周雒维,卢伟国,刘奇..三相电能质量数据压缩方法[J].电网技术,2011,35(10):130-134,5.基金项目
国家自然科学基金项目（50807058）. （）
