Improved Performance of ZSI based UPFC for Enhanced Power Flow in Interconnected System
The FACTSs (Flexible AC Transmission Systems) devices have all the capabilities to provide fast control of active and reactive power through a transmission line. The UPFC (Unified PowerFlow Controller) is a member of the FACTS family with very unique features. UPFC can control active and/or reactive power simultaneously or independently. This paper establishes the improved performance of ZSI (Z-Source Inverter) based UPFC over VSI (Voltage Source Inverter) based UPFC for power flow improvement. The simulation models developed in Matlab/Simulink have been used to show the improvement in active and reactive power flows in an interconnected network.