Optimal Location of UPFC in Power Systems for Increasing Loadability by Genetic Algorithm

In this paper a genetic algorithm (GA) is used for determining optimal location of UPFC in power systems. Optimal location in this paper means finding line number for UPFC location and its parameters for specified number of UPFCs. UPFC is considered as a powerful FACTS device in this paper. Unlike other FACTS devices, UPFC has a great flexibility that can control the active and reactive powers and voltage, simultaneously. The system loadability is applied as a measure of power system performance. Injection model of UPFC is used in the simulation. The concept of simulation is the load flow incorporated with UPFC. Studies are performed on a 14-bus IEEE power system. The results show that steady state performance of the power system can be effectively enhanced due to the optimal location and parameters of UPFC.