Simultaneous power flow control and voltage support using UPFC

Abstract

This paper presents the application of Unified Power Flow Controller (UPFC) in order to simultaneous power flow control and voltage support and also transient stability improvement at a Single-Machine Infinite-Bus (SMIB) power system installed with UPFC. PI type controllers are considered for power flow and voltage control and the parameters of these PI type controllers are tuned using Particle Swarm Optimization (PSO) and Genetic Algorithms (GA). Also a stabilizer supplementary controller based UPFC is considered for increasing power system damping and stability enhancement. In order to UPFC performance study and also comparison of PSO and GA, the SMIB power system is simulated under different scenarios. Numerous simulations show the ability of UPFC in simultaneous power flow control and voltage support and also stability enhancement by damping of power system oscillations. Simulation results emphasis on the better performance of PSO in comparison with GA. Copyright © 2011 Praise Worthy Prize S.r.l.- All rights reserved.