Comparative Study of FACTS Devices for Mitigation of Voltage Sag-Swell in Distribution System

Objectives: In this paper, performance comparison of various FACTS devices has been carried out for mitigating voltage sag/swell and also balancing the active and reactive power of the system. Methods/Statistical Analysis: Fuzzy logic controller has been incorporated in shunt and series converter control of FACTS devices. The system stability performance with different FACTS devices has also been studied using Integral of Squared Error (ISE) performance index. Simulation has been carried out in MATLAB/SIMULINK environment. Findings: It has been found that multiline FACTS devices perform better as compared to single line FACTS devices during the voltage compensation and power quality improvement. Application/Improvements: FACTS devices can improve the system performance by controlling the power flow and bus voltages of system and thus maintaining the power system quality and stability.