A wavelet based synchronized waveform measurement unit algorithm

Kevin Kawal, Qiteng Hong, Panagiotis Papadopoulos, Steven M. Blair, Campbell D. Booth

Research output: Contribution to conferencePaperpeer-review

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Abstract

Power systems with high penetrations of inverter-based resources are increasingly vulnerable to severe disturbances which may manifest as non-stationary voltage and current waveforms, presenting challenges to phasor measurement units which assume quasi-stationary conditions. Time synchronized, high-resolution, waveform measurements have emerged as a solution to accurately monitor emerging system dynamics. This paper proposes a synchronized waveform measurement unit algorithm to detect and characterize transient and dynamic phenomena present in synchronized waveform measurements. The proposed method utilizes the discrete wavelet packet transform to represent non-sinusoidal transients, while the adaptive empirical wavelet transform is applied to extract the fundamental and possible oscillation components. Finally, dynamic phasor extraction is performed via the Hilbert transform. The performance of the proposed algorithm is evaluated using synthetic test signals and compared to a phasor measurement unit algorithm using a goodness of fit metric. The results indicate that the proposed method produces an accurate and sparse representation of the underlying signal dynamics. The proposed method can potentially reduce communication requirements associated with high resolution synchronized waveform measurements, thus enabling real-time synchronized waveform-based applications.
Original languageEnglish
Number of pages5
Publication statusPublished - 26 Oct 2023
Event2023 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe) - Grenoble, France
Duration: 23 Oct 202326 Oct 2023

Conference

Conference2023 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)
Country/TerritoryFrance
CityGrenoble
Period23/10/2326/10/23

Keywords

  • synchronized waveforms
  • power system transients
  • power system oscillations
  • phasor measurement unit
  • wavelet transform

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  • Wide Area Monitoring, Protection and Control (WAMPAC)

    Hong, Q., Kawal, K., Paladhi, S., Zhang, G., Booth, C. & Terzija, V., 29 Nov 2022, Encyclopedia of Electrical and Electronic Power Engineering. García, J. (ed.). Amsterdam , Vol. 2. p. 278-293 16 p.

    Research output: Chapter in Book/Report/Conference proceedingChapter

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