Power System State Estimation for a Spacecraft Power System

In this paper an application of the maximum likelihood state estimator is discussed. The state estimator uses both current and voltage measurements to generate estimates of node voltages for an electrical power distribution system for the Space Shuttle. Preliminary results on the effect of noisy measurements on estimated parameters are reported. The software used in generating these results is part of an overall package being developed at Louisiana Tech University for NASA's power system group. Intended application of this package include the analysis of power systems and real time parallel processing on the Space Shuttle.