Rotor Angle Stability Analysis with Coordinated Control of FACTS Devices Using Particle Swarm Optimization

Electrical load demand on existing transmission lines is growing day by day throughout the world as the economy grows. This increase in electrical energy expenditure, as well as the growing introduction of non-linear loads into the power system, has compelled us to enhance power flow and stability. FACTS (Flexible AC Transmission System) is an important component of power system augmentation. Stability defines the stable operation of the system after abnormal conditions or contingencies to the power system. In this Paper, a particle swarm optimization (PSO) algorithm is applied to design the coordinated parameters of static VAR compensator (SVC) and Thyristor Controlled Series Capacitor (TCSC). In this paper, standard 9-bus and 14-bus system has been considered for analysis of stability with inspecting disturbance at particular buses. The results obtained confirmed the proposed coordinated control technique for improvement of rotor angle and overall stability with reference to individual effects of FACTS device. The paper contributes operational concepts of FACTS and change in PSO algorithm to achieve coordinated control.