The implementation of artificial neural networks (ANN) as a power system st
ability monitoring tool is a viable option, introducing dynamic and intelli
gent solution to utility operators. This paper examines the performance of
two nonlinear multilayer ANN models which are similar in structural topolog
y and training emphasis but different by way of the utilization of their ne
t or basis function. The performance of both models were compared for the e
stimation of stability index to gauge the stability of a power system netwo
rk. Although tests were conducted in a simulated environment, loading patte
rns analyzed in this case study were realistically generated, and hence tes
t results realistically accentuates the potential of ANN for practical on-l
ine dynamic system implementation.