Effect of Static Load Models on Hopf Bifurcation Point and Critical Modes of Power Systems

This paper presents the effect of different static load models on Hopf bifurcation point and critical eigenvalues of power systems. Three most commonly used static load models are investigated thoroughly under various operating conditions and with different power system controllers. Some interesting new observations hase emerged in the damping ratio of the critical mode, especially when power system controllers are introduced for control, in the system to control Hopfbifurcations. These observations would be useful in controller design for Hopf bifurcation or oscillation control.