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Estimation of the Instantaneous Values of the Electrical Operating Parameters in the Ac Network1

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Power Technology and Engineering Aims and scope

The problem of determining the instantaneous values of the electrical operating parameters for the purpose of investigating dynamic processes in nonlinear systems is considered. It is shown that existing procedures for calculating the parameters, which provide a sampling rate of the output data equal to the operating frequency period, does not enable the value of the parameters to be estimated at an arbitrary instant of time with high accuracy. A method of determining the instantaneous values of the electrical operating parameters is proposed, based on a modified Hilbert transformation. An example of the determination of the frequency, amplitude and phase of the current when there is a short circuit is presented. The results enable phenomena occurring “within” the period of the industrial current frequency to be investigated, and also enable the dynamic characteristics of power systems to be determined more accurately.

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References

  1. IEEE Std C37.118TM-2005. IEEE Standard for Synchrophasors for Power Systems.

  2. California Institute for Energy and Environment (CIEE ), Kema: Phasor Measurement Application Study, October 2006.

  3. N. E. Huang and S. Shen, “Hilbert – Huang transform and its applications,” World Scientific (2005).

  4. N. A. Khovanova and I. A. Khovanov, Methods of Analyzing Time Series. A Textbook [in Russian], Izd. Gos. Ucheb.-Nauch. Tsentra “Kolledzh,” Saratov (2001).

  5. A. S. Berdin, D. I. Bliznyuk, P. Yu. Kovalenko, and A. S. Cherepov, “Instantaneous values of the electrical parameters in electromechanical transients,” Izv. NTTs EÉS, No. 1(72) (2015).

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Authors and Affiliations

  1. First President of Russia B. N. Yel’tsin Ural Federal University, Yekaterinburg, Russia

    A. S. Berdin, D. I. Bliznyuk, P. Yu. Kovalenko & A. O. Egorov

  2. Prosoft Systems LLC, Yekaterinburg, Russia

    A. S. Cherepov

Authors
  1. A. S. Berdin
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  2. D. I. Bliznyuk
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  3. P. Yu. Kovalenko
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  4. A. O. Egorov
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  5. A. S. Cherepov
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Additional information

Translated from Élektricheskie Stantsii, No. 8, August 2015, pp. 36 – 39.

1This paper was prepared from the proceedings of the conference “Electric Power with Youthful Eyes – 2014” (Section “Modeling and Control of Electric Power Systems”).

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Berdin, A.S., Bliznyuk, D.I., Kovalenko, P.Y. et al. Estimation of the Instantaneous Values of the Electrical Operating Parameters in the Ac Network1 . Power Technol Eng 49, 386–388 (2016). https://doi.org/10.1007/s10749-016-0633-7

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  • DOI: https://doi.org/10.1007/s10749-016-0633-7

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