Unified Power Flow Controller (UPFC): Modeling and analysis

The Unified Power Flow Controller (UPFC) is a novel power transmission cont roller, The UPFC provides a full dynamic control of transmission parameters , voltage, line impedance and phase angle, This paper presents a useful too l for power utilities engineers to evaluate the application of the UPFC, it s impact on their power system and what would be the shunt and series ratin gs. This paper gives sets of equations for a system including the UPFC and an equivalent two bus power network. A numerical method tested with Matlab has been successfully validated with analog model and EMTP, The Matlab code given in the paper allows to perform fast parametric studies for the appli cation of the UPFC.