Hybrid processing of SCADA and synchronized phasor measurements for tracking network state

Boris A. Alcaide-Moreno, Claudio R. Fuerte-Esquivel, Mevludin Glavic, Thierry Van Cutsem
2015 2015 IEEE Power & Energy Society General Meeting  
This paper proposes a new tracking state estimator aimed at following some of the dynamics of the network state (bus voltage phasors) by a hybrid processing of SCADA and synchronized phasor measurements. The latter are assumed to be available in limited number. To avoid time skew effects, only the SCADA measurements received since the last execution of the estimator are processed. To ensure observability, estimated SCADA measurements are used as pseudo-measurements. The procedure includes a
more » ... dure includes a prediction, an innovation analysis and a correction step. The latter consists of solving a constrained least-squares optimization. The simulation results refer to a test system undergoing large disturbances, evolving to longterm voltage instability or stabilized by emergency control. The proposed method appears to satisfactorily track the overall network evolution, even during those severe conditions.
doi:10.1109/pesgm.2015.7286333 fatcat:nmglhvipcvbz7kbp6rlnczwlne