Improving power system transient stability with optimal allocation and controller design of SVC using particle swarm optimization

The optimal location of Static VAr Compensator (SVC) and coordinating it with Power System Stabilizers (PSSs) to improve power system stability are presented in thispaper. The location of SVC and its coordinated design with PSSs for improving transient stability of the system areformulated as an optimization problem, and the ParticleSwarm Optimization (PSO) is used to search for the optimal location of SVC and the parameters of controllers. A two-area test system with two machines is used for showing the effectiveness of proposed approach to determine the optimallocation of SVC and the coordinated controller parameters to improve power system stability. The results of the nonlinear simulation show that optimally located SVC and coordinated design of SVC-based controller and PSSs improve greatly the transient stability and damping of the system. Finally, a twoarea system with four machines is used to show the damping of the inter-area and local modes of oscillations with optimalcontroller parameters

Keywords:

Static synchronous compensator , transient stability , optimal location , particle swarm optimization , power system stability