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EURASIP Journal on Advances in Signal Processing
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  • Research Article
  • Open Access

Prony Analysis for Power System Transient Harmonics

EURASIP Journal on Advances in Signal Processing20072007:048406

https://doi.org/10.1155/2007/48406

©  Li Qi et al. 2007

  • Received: 9 August 2006
  • Accepted: 18 December 2006
  • Published:

Abstract

Proliferation of nonlinear loads in power systems has increased harmonic pollution and deteriorated power quality. Not required to have prior knowledge of existing harmonics, Prony analysis detects frequencies, magnitudes, phases, and especially damping factors of exponential decaying or growing transient harmonics. In this paper, Prony analysis is implemented to supervise power system transient harmonics, or time-varying harmonics. Further, to improve power quality when transient harmonics appear, the dominant harmonics identified from Prony analysis are used as the harmonic reference for harmonic selective active filters. Simulation results of two test systems during transformer energizing and induction motor starting confirm the effectiveness of the Prony analysis in supervising and canceling power system transient harmonics.

Keywords

  • Information Technology
  • Prior Knowledge
  • Power System
  • Quantum Information
  • Induction Motor

Authors’ Affiliations

(1)
The Center for Advanced Power Systems, Florida State University, Tallahassee, FL 32310, USA

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Copyright

© Li Qi et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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