Steady-state and dynamic models of unified power flow controller (UPFC) for power system studies

This paper provides comprehensive development procedures and final forms of mathematical models of unified power flow controller (UPFC) for steady-state, transient stability and eigenvalue studies. Based on the developed models, the impacts of control strategy, parameters and location of UPFC on power system operating conditions are discussed. The accuracy of the developed models is verified through comparing the study results with those obtained from detailed, time-domain simulation using the Electromagnetic Transients Program (EMTP).