Modeling and real-time simulation of UPFC

We have developed a digital real-time simulator of Power Electronics Controllers, so-called FACTS (Flexible AC Transmission Systems) Controllers and/or Custom Power by using MATLAB(TM)/SIMULINK(TM) and dSPACE(TM) System. This paper describes the modeling and the calculation accuracy of a UPFC (Unified Power Flow Controller) model. Hence, the developed simulator operates at a large time step,in order to improve simulation accuracy, a correction processing of the switching delay is implemented into the UPFC model. Calculation accuracy of the real-time UPFC model is at file same level as EMTDC(TM) results. We confirm stable operation of the developed UPFC model by connecting a commercial real-time digital simulator (RTDS(TM)) (C) 2006 Wiley Periodicals.