Abstract
The paper discusses the effects that nonlinear dynamic load model parameters have on electromechanical oscillations in power systems. Based on a modified Heffron-Phillips model of a synchronous machine and on a generic model of dynamic loads, analysis shows the dependence of the modal oscillations of the system on load model parameters. A single-machine infinite-bus case has been analyzed. It was found that under some circumstances damping can be improved, but under other conditions dynamic load may cause a decrease in damping.
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