基于HHT和PCA的电能质量数据压缩

PQ data compression based on HHT and PCA

针对电力系统日益突出的海量数据存储问题,本文提出了HHT和PCA结合的算法用于电能质量数据压缩。利用HHT进行电能质量信号的故障点检测,将故障信号和正常信号区分重组后用PCA进行压缩以达到数据压缩的效果。采用电能质量数据作为测试样本,实验结果表明,本文算法的压缩性能良好,重构质量高。

In this paper, HHT algorithm is used to compress the power quality data combined with PCA algorithm to solve increasingly prominent data storage problem in power system. First, HHT is used to detect power quality fault signal, then reconstruct fault signal and nofmal signal, at last, PCA algorithm is used to compress the reconstructed signal data. Sample test shows that algorithm raised in this paper has good performance in compression and reconstruction quality.