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http://dx.doi.org/10.17661/jkiiect.2016.9.2.148

Power Signal Monitering System with Compression Storage and Reconstruction  

Bae, Hyeon-Deok (School of Electrical Engineering, Chungbuk National University)
Publication Information
The Journal of Korea Institute of Information, Electronics, and Communication Technology / v.9, no.2, 2016 , pp. 148-154 More about this Journal
Abstract
In recent year, the interests of PQ is increase due to the increasing of non-linear load and distributed power sources in power system. For the parameters detection and feature extraction of PQ, and the PQ improvement method, continuous power signal monitering is needed. In this paper, the power signal compression and reconstruction method is suggested for power signal monitering. The power signal is compressed using DCT that has good compression performance, and the compressed signal is reconstructed through IDCT. And for the higher compression rate, DCT coefficients are arranged by magnitude in compression process, and in recouction process DCT coefficients are rearranged to original frequency position. The synthesized signal according to the IEC standard is used used in compression and reconstruction simulations. The performances of the proposed method are verified by comparing the error between synthesized signal and reconstructed signal.
Keywords
Power quality; Compression; DCT; IDCT; Reconstruction error;
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