Detection and Tracking of Time Varying Power System Frequencies and Harmonics using Subband Adaptive Filtering

적응 부밴드 필터링을 이용한 전력계통 시변 주파수와 고조파 검출 및 추적

  • 손상욱 (충북대학 전기공학과) ;
  • 최훈 (동의대학 전자공학과) ;
  • 배현덕 (충북대학교 전기전자컴퓨터 공학부)
  • Published : 2009.04.01


In this paper, a subband filtering and adaptive prediction technique for analyzing harmonics in power systems is presented. In this method, the filter banks are designed to decompose odd and even order harmonics separately. The adaptive prediction has been employed reduce the transient and white noise effect in time varying harmonics detecting and tracking. The frequencies and amplitudes of the decomposed harmonics are estimated by recursive algorithm. To demonstrate the performances of the developed technique, computer simulations to the signal with the time-varying frequency and THD are carried out.


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