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43 results on '"Asber, Dalal"'

28. Decentralized coordinated secondary voltage control of multi-area highly interconnected power grids

Author

Ouassima Akhrif, Maarouf Saad, Asber Dalal, Serge Lefebvre, and Arvin Morattab

Subjects
Variable (computer science), Engineering, Control theory, business.industry, Simulated annealing, Voltage regulation, AC power, Voltage optimisation, business, Power (physics), Voltage, Power control
Abstract

In this paper, a decentralized method based on simulated annealing approach is proposed in a decentralized way for coordinated secondary voltage control problem of highly interconnected multi-area power networks. The algorithm finds the best possible pilot buses and corresponding control simultaneously, in each area, to compensate for voltage contingencies. The tie-line active and reactive powers transferred between two areas are measured at the borders of each area and the effect of neighbor areas will be considered as variable loads at mutual buses of tie-line. Comparison of the proposed decentralized method with the centralized case shows the effectiveness of the proposed algorithm.

Published
2013

29. Model Predictive Coordinated secondary voltage control of power grids

Author

Serge Lefebvre, Asber Dalal, Ouassima Akhrif, Marouf Saad, and Arvin Morattab

Subjects
Engineering, Electric power system, Model predictive control, Control theory, business.industry, Voltage controller, Voltage regulation, AC power, Voltage optimisation, business, Power control
Abstract

In this paper Model Predictive Control (MPC) algorithm is applied to control, in a coordinated way, the voltage of some sensitive buses of the power network, called pilot nodes. A linear model of partitioned power system is first obtained by state-space system identification as the system model for MPC. Based on the measured voltage at pilot nodes, the centralized secondary MPC controller changes the reactive power injected to the pilot nodes so that voltage deviation of these buses is compensated and reaches its desired value defined by the tertiary level. The proposed method has been tested on the New England 39- bus network and compared with the case without any secondary voltage controller. The simulation results show the effectiveness of the proposed method.

Published
2012

43. The control of axis with state and control constraints

Author

Asber, Dalal, Centre de Recherche en Automatique de Nancy (CRAN), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL), Institut National Polytechnique de Lorraine, Claude Iung, Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), and UL, Thèses

Subjects
Commande automatique, [SPI.OTHER]Engineering Sciences [physics]/Other, Ensemble invariant, Moteurs à courant continu, Invariance positive, [SPI.OTHER] Engineering Sciences [physics]/Other, Contraintes sur l'état et la commande, Systèmes linéaires, Ensemble atteignable, Poursuite et régulation, Commande de moteur à courant continu
Abstract

Not available, Ce travail constitue une contribution à l'étude des systèmes linéaires soumis à des contraintes sur l'état et/ou sur la commande. Les concepts d'ensemble positivement invariant, d'ensemble atteignable et d'ensemble invariant sont exploités lors de la synthèse de retour d'état variable et retour d'état constant afin de résoudre le problème de régulation et de poursuite. Une application concerne la commande des machines électriques

Published
1991

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