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In this paper, optimal selection of the unified power flow controller (UPFC) damping controller parameters in order to improve the power system dynamic response and its stability based on two modified intelligent algorithms have been proposed. These algorithms are based on a modified intelligent particle swarm optimization (PSO) and continuous genetic algorithm (GA). After extraction of UPFC dynamic...
Proliferation of the voltage-sensitive loads in the distribution systems has made the voltage quality an important issue. The main factors considering the voltage quality are the voltage sags and voltage swells. There are many available solutions to improve voltage quality. In the past years, application of the power-electronic based devices known as custom power devices have developed an interesting...
This paper presents a new stochastic optimization approach for parameter tuning of conventional power system stabilizer (PSS). Quantum-behaved particle swarm optimization (QPSO) technique is suggested in this paper to search for optimal settings of PSS parameters. An eigenvalue-based objective function to enhance system damping of electromechanical modes is considered. The performance of the proposed...
In this paper, a transformerless dynamic voltage restorer (DVR) based on the multilevel inverter is proposed. This multilevel inverter uses reduced number of switches. As a result, the proposed DVR has lower number of switches in comparison with other multilevel inverter based DVR topologies. Also, it has lower loss and cost due to no need for injection transformers. As simulation results using PSCAD...
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