Title :
Power system optimal wide area control based on identified models
Author :
Nieto, Juan Diego ; Mauricio, Juan Manuel
Author_Institution :
Dept. of Electr. Eng., Univ. de Sevilla, Sevilla, Spain
fDate :
June 29 2015-July 2 2015
Abstract :
The contribution of this paper is the application of subspace system identification techniques to design a wide area controller for damping power oscillations. A state feedback linear control strategy based on model is proposed. The gains of the controller are obtained through a linear quadratic regulator (LQR) algorithm. The model is obtained through identification using available measurements of frequencies/speeds after applying perturbations like changes in reference of active or reactive powers. Simulations performed in PSS/E using IEEE 12 bus power system benchmark shows very good oscillation damping improvement. Three different test was evaluated which have different kind of perturbation.
Keywords :
damping; linear quadratic control; linear systems; oscillations; perturbation techniques; power system control; power system identification; power system stability; state feedback; IEEE 12 bus power system benchmark; LQR algorithm; PSS-E; linear quadratic regulator algorithm; perturbations; power oscillations damping; reactive powers; state feedback linear control strategy; subspace system identification techniques; wide area controller; Automatic voltage control; Damping; Generators; Oscillators; Power system stability; Reactive power; Linear Quadratic Regulator; N4SID; STATCOM; compensator; control;
Conference_Titel :
PowerTech, 2015 IEEE Eindhoven
Conference_Location :
Eindhoven
DOI :
10.1109/PTC.2015.7232742
