Development and Analysis of MATLAB for Improvement in transmission system parameters using UPFC

The Unified Power Flow Controller (UPFC) is a robust power regulation device that functions as both a series and shunt compensator, effectively managing active and reactive power in power transmission lines. UPFC is primarily used to reduce voltage sag and swell, enhancing power system stability. Its circuit design integrates a rectifier and inverter, enabling dynamic control over power flow. By implementing UPFC in a MATLAB/Simulink environment, power quality is improved through real-time voltage regulation. The simulation results validate UPFC's ability to suppress fluctuations by analyzing frequency response, voltage deviations, and reactive power support. In case of system faults or disturbances, UPFC ensures rapid stabilization, significantly outperforming systems without it. This study highlights the effectiveness of UPFC in maintaining power system stability, optimizing voltage control, and improving energy transmission efficiency by mitigating fluctuations in voltage levels and reactive power variations. Keywords: UPFC,FACTS,MATLAB etc.