Comparison of Matrix Pencil and Prony Methods for Power System Modal Analysis of Noisy Signals
Modal information extracted from the dynamic response of power systems can be applied to detect low frequency oscillations and assess stability margins for monitoring and preventive control. This paper examines two techniques for modal identification based on their ability to accurately identify system modes in the presence of noisy signals. The methods investigated include Prony analysis, which has commonly been used in power system studies, and the Matrix Pencil method, which is more common in electromagnetic analysis. Prony analysis has been shown to have difficulties extracting the modes of noisy signals, so the examples presented explore these shortcomings and compare them to the capabilities of the Matrix Pencil method.
L. L. Grant and M. Crow, "Comparison of Matrix Pencil and Prony Methods for Power System Modal Analysis of Noisy Signals," Proceedings of the 2011 North American Power Symposium, NAPS '11, (2011, Boston, MA), pp. 1-7, Institute of Electrical and Electronics Engineers (IEEE), Aug 2011.
The definitive version is available at http://dx.doi.org/10.1109/NAPS.2011.6024892
2011 North American Power Symposium NAPS '11, (2011: Aug. 4-6, Boston, MA)
Electrical and Computer Engineering
Keywords and Phrases
Eigenvalues and Eigenfunctions; Modal Analysis; Noise Measurement; Polynomials; Power System Stability; Signal to Noise Ratio
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2011 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.