A New Power Flow Control in aTransmission Line UPFC

Abstract

This paper concentrates on FACT device UPFC which is used for powerflow control in thetransmission side. With the growing demand of electricity, it is not possible to erect new lines to face thesituation. Flexible AC Transmission System (FACTS) makes use of the thyristor controlled devices and optimallyutilizes the existing transmission network. One of such device is Unified Power Flow Controller (UPFC) onwhich the emphasis is given in this present work. Real, reactive power, and voltage balance of the unifiedpower-flow control (UPFC) system is analyzed. A novel coordination controller is proposed for the UPFC.The basic control method is such that the shunt converter controls the transmission line reactive powerflow and the dc-link voltage. The series converter controls the real power flow in the transmission line andthe UPFC bus voltages. Experimental works have been conducted to verify the effectiveness of theUPFC in power flow control in the transmission line. The simulation model was done inMATLAB/SIMULINK platform