Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.07a
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- Pages.341-343
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- 2005
A Study of the Compression for the Power Quality Disturbance Signal by using the Phase Estimation of Stationary Signal
정상신호의 위상 추정을 이용한 전력 품질 왜곡 신호의 압축에 관한 연구
- Chung, Young-Sik (University of Incheon, Dept. of Electrical Engineering) ;
- Park, Chan-Woong (University of Incheon, Dept. of Electrical Engineering)
- Published : 2005.07.18
Abstract
This paper introduces a compression algorithm for power quality disturbance signal via the discrete wavelet transform, DWT. Algorithm to estimate a time delay from the power quality disturbance signal is proposed. Pseudo-stationary signal is constructed from the estimated time delay. A difference signal or nonstationary signal is obtained by removing a pseudo-stationary signal from a disturbance signal. DWT is applied to a difference signal. The threshold is applied to reduce a number of coefficients. Simulation results show the resonable compression ratio while keep low signal distortion.
Keywords