基于JPEG2000的电能质量扰动数据压缩方法

Power Quality Disturbance Data Compression Using JPEG2000

JPEG2000是最新静态图像压缩的国际标准,虽然JPEG2000编解码器主要用于图像压缩,但是本文展示了其用于一维电能质量扰动数据的压缩。对于实际电网中采集的各类电能质量扰动信号,JPEG2000的压缩性能好于常见的一些二维压缩方法,特别是使用已有的JPEG2000编解码器的软硬件资源,可以省去专门的硬件开发成本。另外JPEG2000编解码器的一些优良特性,诸如精确的码率控制和累进式传输,也将得到保留。

JPEG2000 is the latest international standard for compression of still images.Although the JPEG2000 codec is designed to compress images,this paper illustrates how the JPEG2000 codec can be used to compress 1-dimensional power quality disturbance data.Using the actual power quality disturbance signals the experiments present that the proposed approach outperforms some existing 2-dimensional power quality data compression schemes.The proposed method allows the use of existing hardware and software JPEG2000 codecs for power quality data compression,and can be especially useful in eliminating the need for specialized hardware development.The desirable characteristics of the JPEG2000 codec,such as accurate rate control and progressive transmission,are retained in the presented scheme.