Optimal placement of SVC for losses reduction and voltage profile improvement in electrical power system using improved gravitational search algorithm

The development of the more increasing power electronics allows the use of FACTS devices to manage and improve either the flow of power or the stability of the power system. One type of FACTS device studied is the SVC. In this study, optimization of SVC is used to determine the most appropriate location and rating in order to obtain the optimum power transfer. Optimization methods used in this study is Improved Gravitational Search Algorithm (IGSA). Improved GSA uses Interval Type-2 Fuzzy Logic System (IT2FLS). IGSA implementation uses Java-Bali power system 500 kV. Simulation results show that the simulation results better with the use of SVC placement than with the GSA and without SVC placement. Placement of SVC with the right location and rating using the IGSA and GSA can reduce power loss in the transmission line and also can improve the voltage profile according to the standards set, in the range of 0.95 ± 1.05pu when compared without SVC.