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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/6933
Title: A LQG based load frequency controller in a competitive electricity environment
Authors: Tyagi, Barjeev
Srivastava S.C.
Published in: International Journal of Emerging Electric Power Systems
Abstract: This paper presents the design of a Linear Quadratic Gaussian (LQG) regulator for the frequency control of a multi-area power system in a restructured competitive electricity market environment. A general model of the LQG regulator has been developed for multi-area system (with hydro and thermal generators) having Poolco and bilateral transactions. To account for the modeling uncertainties and non-measurable states, a Kalman filter has been designed to estimate the state variables. The controller uses these estimates, optimizes a given performance index, and reschedules the generators' outputs according to their bids for the frequency regulation. The functioning of the proposed LQG regulator has been demonstrated on a four area test system and the results have been compared with those obtained by using an optimal PID controller. This paper presents the design of a Linear Quadratic Gaussian (LQG) regulator for the frequency control of a multi-area power system in a restructured competitive electricity market environment. A general model of the LQG regulator has been developed for multi-area system (with hydro and thermal generators) having Poolco and bilateral transactions. To account for the modeling uncertainties and non-measurable states, a Kalman filter has been designed to estimate the state variables. The controller uses these estimates, optimizes a given performance index, and reschedules the generators' outputs according to their bids for the frequency regulation. The functioning of the proposed LQG regulator has been demonstrated on a four area test system and the results have been compared with those obtained by using an optimal PID controller. © 2005 by the authors. All rights reserved.
Citation: International Journal of Emerging Electric Power Systems (2005), 2(2): -
URI: https://doi.org/10.2202/1553-779X.1044
http://repository.iitr.ac.in/handle/123456789/6933
Issue Date: 2005
Publisher: Walter de Gruyter GmbH
Keywords: Ancillary services
Deregulated market
Linear Quadratic Gaussian (LQG) regulator
Load frequency control
ISSN: 21945756
Author Scopus IDs: 7005609418
57198631918
Author Affiliations: Tyagi, B., Indian Institute of Technology, Kanpur, India
Srivastava, S.C., Indian Institute of Technology, Kanpur, India
Appears in Collections:Journal Publications [EE]

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