Proposal for online voltage stability assessment using Phasor Measurement Units

In this work, voltage stability and applications of Phasor Measurements Units (PMU) are reviewed. Models for PMUs integration, composed of an architecture involving substations, concentrators and control centers are addressed for interacting with a hybrid State Estimator (SE). In that model, online voltage stability analysis is proposed, and through digital simulations, it is illustrated the advantages of the hybrid strategy.