Dynamic stability and power system stabilizersߞAnalysis and tests on the Venezuelan system

The nature of undamped oscillations in a power system is closely examined in this paper and an experimental approach is proposed for the adjustment of the power system stabilizers to damp these oscillations. A description is given of the poorly damped and occasionally sustained oscillations that the Venezuelan Interconnected power system experienced after the installation of high initial response solid-state exciters and a detailed discussion is presented of the results of tests performed on the power system with stabilizers adjusted using the experimental approach proposed.