Identification and estimation of equivalent area parameters using synchronised phasor measurements

Vahidnia, Arash, Ledwich, Gerard, Palmer, Edward, & Ghosh, Arindam (2014) Identification and estimation of equivalent area parameters using synchronised phasor measurements. IET Generation, Transmission and Distribution, 8(4), pp. 697-704.

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Abstract

A new approach is proposed for obtaining a non-linear area-based equivalent model of power systems to express the inter-area oscillations using synchronised phasor measurements. The generators that remain coherent for inter-area disturbances over a wide range of operating conditions define the areas, and the reduced model is obtained by representing each area by an equivalent machine. The parameters of the reduced system are identified by processing the obtained measurements, and a non-linear Kalman estimator is then designed for the estimation of equivalent area angles and frequencies. The simulation of the approach on a two-area system shows substantial reduction of non-inter-area modes in the estimated angles. The proposed methods are also applied to a ten-machine system to illustrate the feasibility of the approach on larger and meshed networks.

Impact and interest:

4 citations in Scopus
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6 citations in Web of Science®

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ID Code: 66600
Item Type: Journal Article
Refereed: Yes
Keywords: Parameter estimation, Phasor measurement, Power system stability, Oscillations
DOI: 10.1049/iet-gtd.2013.0285
ISSN: 1751-8695
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Copyright Owner: Copyright 2013 The Institution of Engineering and Technology
Deposited On: 23 Jan 2014 23:22
Last Modified: 12 Sep 2016 00:35

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