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- Use of available phasor measurements for system observability: A case studyPublication . Vide, Paula Sofia Pita da Silva e Castro; Barbosa, F. P. Maciel; Ferreira, Isabel M.This paper proposes the use of available PMU measurements for establishing network observability. State estimation is an important EMS application for providing real time, reliable and qualitative information on the system state. The observability analysis is the necessary function of the whole network state estimation.This paper addresses the incorporation of PMU measurements with the purpose of full network observability. The methodology is validated by the results on IEEE 14, 30 and 57 bus test system.
- Performance metrics for evaluation of a mixed measurement based state estimatorPublication . Vide, P. Castro; Barbosa, F. Maciel; Carvalho, J. BelezaWith the development of synchronized phasor measurement technology in recent years, it gains great interest the use of PMU measurements to improve state estimation performances. In this paper, a mixed measurement (SCADA and PMU measurements) state estimator is proposed. Several measures useful for evaluating various aspects of the performance of the mixed measurement state estimator are proposed and explained. State Estimator validity, performance and characteristics of the results on IEEE 14 bus test system are presented.