Journal of Electrical Engineering and Technology

  • 제6권3호
  • /
  • Pages.319-327
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  • 2011
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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An Iterative Technique for Real-Time Tracking of Power System Harmonics

  • Sidhu, T.S. (Dept. of Electrical and Computer Engineering, University of Western Ontario) ;
  • Zadeh, M.R.D. (Dept. of Electrical and Computer Engineering, University of Western Ontario) ;
  • Pooranalingam, P.J. (Dept. of Electrical and Electronic Engineering, University of Saskatchewan) ;
  • Oh, Yong-Taek (Dept. of Electrical and Electronic Engineering, Korea University of Technology and Education)
  • 투고 : 2009.11.16
  • 심사 : 2011.02.08
  • 발행 : 2011.05.02
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초록

An iterative technique based on orthogonal filters and frequency tracking is proposed to estimate harmonic components in power systems. The technique uses frequency interpolation to estimate fundamental frequency and harmonics when the nominal frequency of the signal is a non-integer value. Due to the number of computations involved during the generation of filter coefficients, an offline computation is suggested. Beneficial features of the proposed technique include fixed sampling rate and fixed data window size. The performance of the proposed technique is examined by simulating different power system operating conditions and evaluating the data from these simulations. A technique based on Fast Fourier Transform is also used to estimate the harmonic components for all the simulated signals. These estimates are compared with those obtained from the proposed technique. Results show that the proposed technique can converge to the accurate fundamental frequency and therefore, provide accurate harmonic components even when the fundamental frequency is not equal to the nominal frequency.

키워드

참고문헌

  1. Thomas H. Ortmeyer, K.R.Chakravarthi, Aly A. Mahmoud, "The Effects of Power System Harmonics end Power System Equipment and Loads", IEEE Transactions on Power Apparatus and System, Vol. PAS-104, No. 9, pp. 2555-2560, September 1985. https://doi.org/10.1109/TPAS.1985.319019
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  7. M. S., Sachdev, H. C. Wood, and N. G., Johnson, “Kalman Filtering Applied to Power System Measurements for Relaying”, IEEE Transactions on Power Apparatus and Systems, Vol. PAS-104, Dec. 1985, pp. 3565–3573.
  8. T.S. Sidhu, M.S. Sachdev, "An Iterative Technique for Fast and Accurate Measurement of Power System Frequency", IEEE Transactions on Power Delivery, Vol. 13, No. 1, pp.109–115, January 1998.

피인용 문헌

  1. Extended C37.118.1 PMU Algorithms for Joint Tracking of Fundamental and Harmonic Phasors in Stressed Power Systems and Microgrids vol.29, pp.3, 2014, https://doi.org/10.1109/TPWRD.2014.2318024
  2. Phasor measurement unit based wide-area monitoring and information sharing between micro-grids vol.11, pp.5, 2017, https://doi.org/10.1049/iet-gtd.2016.1419