Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A DC-Offset Elimination Algorithm Based on an AR Model

AR모델을 이용한 직류 옵셋 성분 제거 알고리즘

  • Chang Soo Young (Next-Generation Power Technology Center Myongji University) ;
  • Lee Dong Gyu (Next-Generation Power Technology Center Myongji University) ;
  • Kang Sang Hee (Next-Generation Power Technology Center Myongji University)
  • 장수영 (명지대학교 차세대 전력기술 연구센터) ;
  • 이동규 (명지대학교 차세대 전력기술 연구센터) ;
  • 강상희 (명지대학교 차세대 전력기술 연구센터)
  • Published : 2004.07.14
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Abstract

ln this paper, A dc-offset elimination novel algorithm based on an An model is proposed. The algorithm can eliminate dc-offset rapidly than other algorithms. The signal of fault current can be presented as a linear equation combined sinusoidal with exponential signals. Then, the linear equation can be presented an auto-regressive(AR) model and do-offset can be calculated by the equation of AR model. So it is possible to be removed the dc-offset from the original current signal. Performance evaluation of the algorithm was tested on condition that A-phase ground fault on 154kV 25km overhead transmission line.

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