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Your search keyword '"Welhazi, Yosra"' showing total 8 results
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8 results on '"Welhazi, Yosra"'

5. Mono-criterion electrical distribution systems planning using particle swarm optimization

Author

Welhazi Yosra, Hadj Abdallah Hsan, Kahouli Omar, and Souifi Hayfa

Subjects
Engineering, Mathematical optimization, business.industry, 020209 energy, Flow (psychology), Particle swarm optimization, Control reconfiguration, 02 engineering and technology, AC power, Power (physics), Power Balance, Algorithmic efficiency, 0202 electrical engineering, electronic engineering, information engineering, business, Voltage
Abstract

This paper dealt with the optimal distribution network planning (DNP) under loads growth condition where the Particle Swarm Optimization with Constriction Factor (PSO-CF) was considered. This paper aimed at ensuring that the consumers' load demands which always increase with time can be satisfied in an optimum way by the distribution network reconfiguration (DNR). The planning problem was addressed as a mono-criterion one with reduced power losses cost objective. The radiality, voltages limits, and power balance constraints were taken into consideration in this study. So as to evaluate the active power losses, a load flow technique was carried out. The PSO-CF was tested on IEEE-10 bus. All simulation studies and results showed the algorithm efficiency and capability to fulfill good results.

Published
2016

8. Power System Stability Enhancement Using FACTS Controllers in Multimachine Power Systems.

Author

Welhazi, Yosra, Guesmi, Tawfik, Jaoued, Imen Ben, and Abdallah, Hsan Hadj

Subjects
*FLEXIBLE AC transmission systems, *STATIC VAR compensators, *ALTERNATING current in electric power transmission, *INTERCONNECTED power systems, *CAPACITORS, *ELECTRIC controllers
Abstract

This paper investigates detailed flexible approach for incorporating various flexible alternating current transmission systems (FACTS) controllers in multimachine power system environment such as static var compensator (SVC) and thyristor controlled series capacitor (TCSC) in order to improve power system stability. The incorporation of FACTS devices into multimachine power system requires the development of the mathematical model of the power system with FACTS controllers. The differential algebraic equation (DAE) model of multimachine power system with FACTS controllers such as SVC and TCSC devices has been developed in this paper. Despite the fact that SVC and TCSC devices have been incorporated individually in DAE model of multimachine system, the DAE model with coordination of FACTS controllers has not been developed. So, the methodology of incorporation of series and shunt FACTS controllers in coordinated control manner in the DAE model of power system has been developed in this paper. Thus, the objective of this paper is to develop a general methodology of DAE model of power system with incorporation of series and shunt FACTS controllers in individual and coordinated control manner in order to improve power system stability. The western system coordinating council (WSCC) 3-machine, 9-bus system is used to illustrate the application of all proposed models and techniques. [ABSTRACT FROM AUTHOR]

Published
2014

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