... location of a UPFC in a power system, with minimum transmission losses and cost of generation. The system loadability and index security are applied as a measure of power system performance. For ... effectiveness of the approach proposed and illustrate the impacts of UPFC, we study two cases for a test system IEEE 14-bus. Data and results of system are based on 100 MVA and bus 1 is the bus of reference. ... research interests control of wind renewable energy systems and the power systems computing and multi objective dispatching. He is author and coauthor of several papers in international journals...