Design and performance analysis of space vector pulse width modulation based unified power flow controller

With the increasing energy power demand, optimum utilization of energy is the need of the day. Unified Power Flow Controller (UPFC) because of its unique capability to control both real and reactive power has become popular device for maintaining and controlling the power system parameters. This is done by controlling voltage, line reactance and phase angle. It also facilitates loading transmission lines near their thermal limits. These abilities of UPFC make it a unique device for providing flexibility to power system operators. The application of proposed control scheme for investigating the role of UPFC in power transmission lines is studied by using Space Vector Pulse Width Modulation Technique. To explain the control and conditioning of power (both active and reactive), simulation of the system is carried out in MATLAB simulative environment. The system is studied under various steady and transient states, at various load demands. The dynamic controllability of the demand variation is also studied in the simulation environment.