대한전기학회논문지:전력기술부문A (The Transactions of the Korean Institute of Electrical Engineers A)

대한전기학회 (The Korean Institute of Electrical Engineers)
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코사인 필터와 사인 필터의 이득차를 이용한 주파수 측정

An algorithm for Power Frequency Estimation Using the Difference between the Gains of Cosine and Sine Filters

  • 남순열 (명지대학교 전기공학과/차세대 전력기술 연구센터) ;
  • 강상희 (명지대학교 전기공학과/차세대 전력기술 연구센터) ;
  • 박종근 (서울대학교 전기공학부)
  • 발행 : 2006.06.01
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⟨ 이전 논문 다음 논문 ⟩

초록

A new algorithm for estimating power frequency is presented. Unlike conventional algorithms, the proposed algorithm is based on the fact that the magnitude gains of cosine and sine filters become different when the power frequency is deviated from the nominal value. This makes the algorithm capable of providing an accurate and fast estimate of the power frequency. To demonstrate the performance of the developed algorithm, various computer simulated data records are processed. The algorithm showed a high level of robustness as well as high measurement accuracy over a wide range of frequency changes. Moreover, the algorithm was highly immune to harmonics and noise.

키워드

참고문헌

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