A Study of Data Compression of Power Quality Disturbance Signal

전력품질 왜곡 신호 압축에 관한 연구

  • 정영식 (인천대학교 전기공학과) ;
  • 박찬웅 (인천대학교 전기공학과)
  • Published : 2004.07.14

Abstract

This paper introduces a compression algorithm for power quality disturbance signal via the discrete wavelet transform, DWT. Fundamental signal or stationary signal is estimated and then subtracted from a given signal to obtain a difference signal or nonstationary signal. DWT is applied to a difference signal to get coefficients that are thresholded to reduce a number of coefficients. Simulation results show the resonable compression ratio while keep low signal distortion.

Keywords