International Journal of Modern Engineering Research (IJMER)
In this paper, possible causes of various instability and chances of system break down in a power system network are investigated based on theory of nonlinear dynamics applied to a power system network. Here a simple three bus power system model is used for the analysis. First the routes to chaotic oscillation through various oscillatory modes are completely determined. Then it is shown that chaotic oscillation eventually leads to system break-down characterized by collapse of system voltage and large deviation in generator rotor angle (angle divergence), also known as chaos induced instability.