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In this paper the performance of UPFC is investigated in controlling the flow of power over the transmission line. Voltage sources model is utilized to study the behavior of the UPFC in regulating the voltage profile, active and reactive power. This model is incorporated in Conventional Newton Raphson algorithm for load flow studies. Simultaneous method is employed in which equations of unified power flow controller and the power balance equations of networks are combined in to one set of non-linear algebraic equations. Placement of this device in suitable location can lead to control in flow of power and maintain bus voltages in desired level and improve voltage stability margins. This Paper presents a Genetic Algorithm (GA) based allocation algorithm for UPFC Device considering energy cost, power system losses and cost of device. GA based method utilize the sensitivity of total real power transmission loss with respect to the control parameters of device. The results have been obtained on IEEE 5bus and IEEE 14bus test system.

Application of Ga for Optimal Location and Parameters Setting Of Upfc Considering Voltage Stability Index