  In this paper, we study the dynamics and stability of a fundamental power
system model when a time delay is imposed on the excitation of the generator.
It is observed that sustained oscillations can arise in an otherwise stable
power system through a delay induced Andronov-Hopf bifurcation. Numerical
simulations are conducted to explore the dynamics of the time delayed system
after the bifurcation which indicate period doublings culminating in a strange
attractor.
