The accuracy of generator dynamic parameters is one of the crucial factors
in correctly simulating the power system transient phenomena. This paper pr
oposes a general procedure for estimating the generator dynamic parameters
from measurements. The proposed procedure employs a gradient based simulati
on optimization technique to estimate the parameters. Effectiveness of the
simulation optimization method is shown in some examples for estimating the
exciter and governor model parameters, Impacts of noise and parameter unce
rtainties are briefly discussed in the paper.