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Power System Static-State Estimation, Part II: Approximate Model

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2 Author(s)
Fred C. Schweppe ; Massachusetts Institute of Technology ; Douglas B. Rom

The static state of an electric power system is defined as the vector of the voltage magnitudes and angles at all network buses. The static-state estimator is a data-processing algorithm for converting redundant meter readings and other available information into an estimate of the static-state vector. Discussions center on an approximate mathematical model (related to the dc load-flow model). This model yields noniterative-state estimation equations, simplified prediction of effects of network and generation-load pattern changes on network flow, and simplified detection and identification of modeling errors. Results of some initial computer studies on the real power-voltage angle portion of the approximate model are discussed.

Published in:

IEEE Transactions on Power Apparatus and Systems  (Volume:PAS-89 ,  Issue: 1 )