CONTROL DESIGN AND SIMULATION OF UNIFIED POWER-FLOW CONTROLLER

The UPFC is a solid state controller which can be used to control acti ve and reactive power flows in a transmission line. In this paper we p ropose a control strategy for UPFC in which we control real power flou r through the line, while regulating magnitudes of the voltages at its two ports. We design a controller for this purpose which uses only lo cal measurements. The control strategy is evaluated using digital simu lation for a case study.