Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study of Voltage Sag Detection Using Wavelet Transform

웨이블릿 변환을 이용한 순간전압강하 검출 연구

  • Lee, Kyo-Sung (Dept. of Electrical Engineering, Chungnam National University) ;
  • Lee, Yong-Jae (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Do-Hun (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Yang-Mo (Dept. of Electrical Engineering, Chungnam National University)
  • Published : 2002.11.15
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Abstract

The fourier transform yields good information on the frequency content of the transient, but the time at which a particular disturbance in the signal occurred is lost. Unlike the fourier transform, the wavelet transform provides a time information in addition to the frequency information. So the wavelet transform is more efficient in detecting power quality disturbances. In this paper, we use the wavelet transform for detecting the voltage sag.

Keywords