International Research Publication House
Voltage instability and voltage collapse are very important issues to be considered when load increase and major faults occur in the system. Flexible AC Transmission System (FACTS) can be used to prevent voltage instability, increase power transfer capability and reduce the power loss of the system. Identification of optimal location of FACTS device in the power system is very important task. Stochastic algorithms such as Particle Swarm Optimization (PSO), Genetic Algorithm (GA) and hybrid Particle Swarm Optimization Genetic Algorithm (PSOGA) can be used to solve multi-objective optimization problem.