Design Proportional Integral Controller Using Facts Device for Voltage Compensation

In this paper a new methodology and approach is used to design a controller which can control the voltage sag and system abnormalities at fault condition. For approaching this we use FACTS devices and proportional integral (PI) controller. Fact devices enhances the system voltages problem, harmonics and stabilities. Different types of FACTS devices are available in power system. The DSTATCOM is more suitable in voltage sag problem control. It is a shunt connected FACTS device. In MATLAB model it is combined with the proportional integral (PI) control which is cheaper and its functioning is very easy. In this controller we have used 2 bus transmission power system using MATLAB/SIMULINK software.