STUDY OF POWER FLOW CONTROL AND TRANSIENT STABILITY WITH UPFC

This paper discusses the property of UPFC adjusting power flow and designs three kinds of optimal models. An effective subsection control strategy is proposed based on the characteristics which the range of UPFC control power flow is affected by the change of power angle. With this strategy, UPFC's working modes may vary according to different stage of system transient process, so system's transient stability can be improved greatly. it's effectiveness is illustrated by simulation on a one machine infinite bus system.