State Estimation of Power System Containing FACTS Controller and PMU

In recent days there is a significant use of Flexible AC Transmission System (FACTS) devices for manipulating line power flows to relieve congestion and optimize the overall grid operation have increased. As a result, there is a need to integrate the FACTS device models into existing power system applications. With the development of power system the scale grids has become more and more complex. Global Positioning System (GPS)-based synchronous Phasor Measurement Unit (PMU) is a new high-precision device, which measure both voltage phasors and current phasors. The use of PMU has made great changes in power system. A comprehensive formulation of the new state estimator incorporating conventional, as well as PMU measurements with FACTS device is formulated. The FACTS device used in this work is Unified Power Flow Controller (UPFC). To verify the new state estimator, simulations on IEEE 14 bus system is performed.