Performance Analysis of Different Types of Facts Controllers in a Transmission Line

Unified power flow controller (UPFC) is used to control the power in the transmission systems by controlling the impedance, voltage magnitude and phase. The basic structure of UPFC consists of two voltage source converters (VSI), where one converter is connected in parallel to the transmission line (STATCOM) while the other is in series with the transmission line (SSSC). The aim of the paper is the modeling, the identification of the reference and control of UPFC and studying its influence on the electrical network. Finally the simulation results have been presented to indicate the improvements in the performance of the UPFC to control the voltage in the power system UPFC can control the real and reactive power flow in the transmission system. Basically this paper shows the result that shows the performance of the system for each of the facts devices in improving the power flow in the transmission lines. All the simulations are carried out by using MATLAB/SIMULINK software. The simulation result shows the performance of facts devices in a transmission lines.