전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제56권5호
  • /
  • Pages.834-840
  • /
  • 2007
  • /
  • 1975-8359(pISSN)
  • /
  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

고장전류의 웨이브릿 변환을 이용한 동기 발전기 보호 알고리즘

Synchronous Generator Protective Algorithm using Wavelet Transform of Fault Currents

  • 박철원 (강릉대 전기정보통신공학부) ;
  • 신명철 (성균관대 정보통신공학부)
  • 발행 : 2007.05.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A generator plays an important role in transferring an electric power to power system networks. The generator protection systems in Korea have been imported and operated through a tum-key from overseas entirely. Therefore, a study of the generator protection field has in urgent need for a stable operation of the imported goods, and for preparation of next generation protection system. The paper describes the fault detection algorithm using WT(Wave!et Transform) of currents for a generator protection. The fault current signals after executing a terminal fault modeling collect using a MA TLAB package, and calculate the wavelet coefficients through the process of a multi -level decomposition (MLD). The proposed algorithm for a fault detection using the Daubechies WT (wavelet transform) was executed with a C language for the command line function and for the real time realization after analyzing MATLAB's graphical interface. The advanced technique had complemented the defects of a DFT by applying a Daubechies WT. and had improved faster a speed and more accurate of fault discriminant than a conventional DFR.

키워드

참고문헌

  1. 박철원, '발전기 시스템의 과도해석과 IED 용 개선된 알고리즘 개발', 최종보고서 pp. 1-120, 2006.12
  2. 박철원 외 4인, '발전소의 발전기 보호계전시스템', 대한전기학회 하계학술대회논문집 pp. 151-152, 2006.7
  3. 전력연구원, '원자력발전소 표준화설계를 위한 조사용역', pp. 83-269, 1999
  4. 전력연구원, '울진 N/P #4 Unit 발전기 준공시험 보고서, pp. 1-157, 1998.4
  5. 박철원, 이상성, 신명철 외 1인, '대용량 발전기보호를 위한 발전기모델링', 대한전기학회 하계학술대회 논문집, pp. 121-122, 2006.7
  6. 박철원 외 4인, '동기 발전기의 평형 및 불평형 고장해석', 대한전기학회전력기술부문회 논문집, pp. 402-404, 2006.11
  7. Y.S. Lyu, B.S. Cho, J.j. Yang, H.J. Oh, B.C. Ahn, 'A Study on the Optimal Protection of a In-Generator Earth Fault', The Asian Conf. on Power System Protection, pp. 212-217, Oct. 2003
  8. 강상희, 권영지, 김철훈,' 발전기 과도현상에 따른 발전기 보호 계전기 동작 분석', 대한전기학회전력기술부문회 논문집, pp. 378-380, 2006.11
  9. 차승태, 신재경 외 3인,' 고정밀 발전기 보호계전기의 RTDS 모델을 이용한 발전기 사고 모의', 대한전기학회 전력기술부문회 논문집, pp. 302-304, 2006.11
  10. IEEE Power System Relaying Committee, 'IEEE Guide for AC Generator Protection', IEEE Std. C37.102-1995
  11. IEEE Power System Helaying Committee, 'IEEE Guide for Generator Ground Protection(C37.101-1993)
  12. G.S. Hope, P.K Dash and O.P. Malik, 'Digital Differential Protection of a Generator Unit : Scheme and Heal-Time Test Hesults', IEEE Trans. on PAS, Vol. PAS-96, No. 2, March/April pp. 502-512, 1977 https://doi.org/10.1109/T-PAS.1977.32360
  13. J. Penman, H. Jiang, 'The detection of stator and rotor winding short circuit in synchronous machines by analyzing excitation current harmonic', Proc. lEE Int. Conf. Opportunities and Advances in International Power Generation, No. 419, pp. 137-142, 1996 https://doi.org/10.1049/cp:19960135
  14. N.L. Tai and O. Ai, 'Protection technique based on delta-zero sequence voltages for generator stator ground fault', IEE Proc.-Gener. Transm. Distrib., Vol. 151, No. 5, pp. 651-657, Sep. 2004 https://doi.org/10.1049/ip-gtd:20040644
  15. M. Fulczyk and R. L. Schlake, ' Influence of the generator load conditions on third harmonic voltages in generator stator windings', IEEE Trans. on Energy Conversion, vol. 20, no. 1, pp. 158-165. Mar. 2005 https://doi.org/10.1109/TEC.2004.842391
  16. A. I. Taalab, H. A. Darwish, T. A. Kawady, 'Ann-based Novel Fault Detection for Generator Windings Protection', IEEE Trans. on Power Delivery, Vol. 14, No. 3, pp. 824-830, 1999 https://doi.org/10.1109/61.772321
  17. D. Bi, X. Wang, W. Wang, Z. O. Zhu, and Howe, 'Improved transient simulation of salient-pole synchronous generators with internal and ground faults in stator winding', IEEE Trans. Energy Conversion vol. 20, no. 1. pp. 128-134, Mar. 2005 https://doi.org/10.1109/TEC.2004.841509
  18. Michel Misiti et aI., 'MATLAB Wavelet Toolbox', User's Guide Version 1, pp. 1-1-2-42, 1997
  19. O. Ozgonencl E. Arisoy, M.A.S.K Khan M.A. Rahman, 'A Wavelet Power Based Algorithm For https://doi.org/10.1109/PES.2006.1708892