The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Orthogonal Filter Design Using Improved Fast Wash Transform Algorithm

개선된 고속월쉬변환 알고리즘을 이용한 직교필터 설계

  • 신승권 (성균관대 전기전자컴퓨터공학부) ;
  • 조영호 (한국항공우주산업 우주개발센터) ;
  • 김태훈 (성균관대 전기전자컴퓨터공학부) ;
  • 정제욱 (비츠로컴 수석 연구원) ;
  • 이한석 (부천대 컴퓨터제어과) ;
  • 안두수 (성균관대 전기전자컴퓨터공학부)
  • Published : 2001.06.01
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Abstract

This paper developed improved fast Walsh transform based on dyadic-ordered fast Walsh transform, then regenerated signal flow graph of improved fast Walsh transform, and used it for digital filtering, and then measured fundamental frequency and harmonics for current and voltage signals of power system. Using the improved fast Walsh transform, we present a new algorithm which reduces the computational amount, and it can consequently calculate the real and imaginary components for current and voltage signals of power system in sampling intervals. The calculation amount is reduced to 2(N-1) at N samples to measure full harmonics using developed algorithm. When, in single harmonic measuring, it needs only 2(log2N-1) additions and subtractions.

Keywords

References

  1. O.P. Malik, P.K. Dash, G.S. Hope, 'Digital Protection of a Power Transformer', IEEE Publication 76CH1075-1 PWR, Paper No. A76 191-7, IEEE PES Winter meeting, New York, January 1976, pp. 1-7
  2. F. Dahlmark, 'Integration of protection and control', Protection System Engineers Association, November, 1998
  3. 정제욱, 계문호, '배전자동화용 단말장치 기술 개발 및 전원 구성에 관한 연구', 대한전기학회 하계학술대회 논문집(B), pp.902-904, 7월, 1993
  4. G.S. Hope, V.S. Umamaheswaran, 'Sampling for Computer Protection of Transmission Lines', IEEE Trans. on Power Apparatus and Systems, Vol. 93, No. 5, September/October 1974, pp. 1522-1533 https://doi.org/10.1109/TPAS.1974.293883
  5. G.S. Hope, O.P. Malik, 'Sampling Rates for Computer Transmission Line Protection', IEEE Publication No. 75CH1034-8 PWR, Paper No. A 75 544-7, IEEE PES Summer Meeting, San Francisco, July 1975, pp 1-7
  6. J.W. Horton, 'The Use of Walsh Functions for High Speed Digital Relaying', IEEE Publication No. 75CH1034-8 PWR, Paper No. A 75 582 7, IEEE PES Summer Meeting, San Francisco, July 1975, pp. 1-9
  7. G. Ott, L.N. Walker, 'Transmission Line Fault Locator', Annual Conference of Protective Relay Engineers, Texas A&M University, College Station, TX, April 1974
  8. A.M. Ranjbar, B.J. Cory, 'An Improved Method for the Digital Protection of High Voltage Transmission Lines', IEEE Trans. on Power Apparatus and Systems, Vol. 94, No. 2, March/April 1975, pp. 544-550 https://doi.org/10.1109/T-PAS.1975.31882
  9. P.G. McLaren, M.A. Redfem, 'Fourier-Series Techniques Applied to Distance Protection', Ibid, pp. 1301-1305
  10. 안두수, '직교함수와 응용', 북두출판사, 1997
  11. K.G. Beauchamp, 'Applications of Walsh and Related Functions', Academic Press, 1984
  12. J.W. Manz, 'A sequency-ordered fast Walsh transform', IEEE Trans. Audio Electroacoust, AV-20, 1972, pp 204-205
  13. H. Larsen, 'An algorithm to compute the sequency-ordered Walsh transform', IEEE Trans. Acoust, Sp. Sig. Proc. ASSP-24, 1976, pp 335-336