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Type: Conference paper
Title: Illustration of an analytical method for selecting signals and locations for power system modal-estimators
Author: Vowles, D.
Gibbard, M.
Citation: Proceedings of the IEEE Power and Energy Society (PES) General Meeting, held in Minneapolis, MN, USA 25-29 July 2010: pp.1-7
Publisher: IEEE
Publisher Place: 345 E 47TH ST, NEW YORK, NY 10017 USA
Issue Date: 2010
Series/Report no.: IEEE Power and Energy Society General Meeting PESGM
ISBN: 9781424465491
ISSN: 1944-9925
Conference Name: Power and Energy Society General Meeting (2010 : Minneapolis, USA)
Statement of
D. J. Vowles and M. J. Gibbard
Abstract: For the purposes of planning it is necessary to determine, in a transmission system, which are the best signals for estimating the parameters of the electromechanical modes, given the characteristics of the modal estimator. Closed-form mathematical expressions are derived in another paper for the Power Spectral Densities (PSDs) of the candidate signals at selected locations due to random fluctuations in the system loads. The expressions for the PDSs comprise the separate identifiable contributions of every system mode to the PSD of the signal within a specified frequency band. Also, an expression has been derived which provides a measure of the contribution of the mode to the PSD. The measure is called the Modal Power Contribution which reveals the suitability of a given signal for modal estimation, especially when modes are closely-spaced. The paper demonstrates the practical application of the theoretical analysis.
Keywords: Power system identification; monitoring and control; modal estimation
Rights: ©2010 IEEE
RMID: 0020105298
DOI: 10.1109/PES.2010.5589294
Appears in Collections:Electrical and Electronic Engineering publications

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