| 摘要 |
<p>The present invention is concerned with a cost effective historian system that supports long term access to power system data originating from Phasor Measurement Units. According to the invention, a method of storing a plurality of blocks of power system data samples comprises the steps of performing a wavelet transform for each block of data samples to generate wavelet coefficients of a plurality of levels-of-detail, or wavelet generations, and storing, in a historian of the power system, the wavelet coefficients from different blocks and pertaining to a same level-of-detail as one stream of wavelet coefficients.</p> |
