Author : T. N. V. L. N. Kumar, Dr. R. V. S. Satyanarayana [ Volume No.:VI, Issue No.III-May 2017] [Page No : 720-726] [2017]

Power system is a complex and vast where FACTS devices can be put to good use to overcome several operational limitations in terms of thermal stability, voltage stability and other inherent limitations offered by the transmission lines. In order optimize the cost and performance of these FACTS devices they have placed optimally. This important aspect that has always intrigued the power system planners and researches alike. This work aims to identifying the optimal location and size of the Unified Power Flow Controller (UPFC) with the help of Modified Bacterial Foraging Optimization Algorithm (BFOA). The optimal location and size is proposed to be identified by optimizing the multi-objective function, formulated by different factors that define the system security, namely Voltage Deviation, System Overload and Real Power Losses. The results are presented and analyzed for an IEEE 30 bus test system.