A Wavelet-Based Data Compression Technique for Smart Grid

作者：Ning Jiaxin^*; Wang Jianhui; Gao Wenzhong; Liu Cong

来源：IEEE Transactions on Smart Grid, 2011, 2(1): 212-218.

DOI：10.1109/TSG.2010.2091291

• Data compression
• disturbance analysis
• wavelet transform

This paper proposes a wavelet-based data compression approach for the smart grid (SG). In particular, wavelet transform (WT)-based multiresolution analysis (MRA), as well as its properties, are studied for its data compression and denoising capabilities for power system signals in SG. Selection of the Order 2 Daubechies wavelet and scale 5 as the best wavelet function and the optimal decomposition scale, respectively, for disturbance signals is demonstrated according to the criterion of the maximum wavelet energy of wavelet coefficients (WCs). To justify the proposed method, phasor data are simulated under disturbance circumstances in the IEEE New England 39-bus system. The results indicate that WT-based MRA can not only compress disturbance signals but also depress the sinusoidal and white noise contained in the signals.

• 出版日期2011-3