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Coexistence of Four Different Attractors in a Fundamental Power System Model Vaithianathan Venkatasubramanian and Weijun JiAbstract-This paper reports the occurrence of a rare phenomenon in dynamical systems when four different attractors namely a stable equilibrium, a stable limit cycle and two strange attractors coexist in a fundamental power system model. The paper shows that power system operation could get trapped into sustained chaotic oscillations after a large disturbance even when there exists a viable stable equilibrium point in the model.

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