The main accomplishments of the project are
1. Discovery and initial analysis of a new mechanism for oscillations in which a
strong resonance between two oscillatory modes is a precursor to the oscillations.
2. Assessment of the computational speed of advanced eigenvalue algorithms for
oscillations and its scaling with system size.
3. Analysis of a steady state “angle collapse” instability preceded by resonance in
a low frequency oscillatory mode and caused by increasing interarea transfer.
4. Improved eigenvalue sensitivity formulas taking account of the different time
scales of oscillations and operator actions.
5. New methods for quantifying the robustness of eigenvalues to uncertainties
such as poorly known load or generator data.
6. Nine, fourteen and thirty seven bus systems oscillation test cases.
7. Foundational workto wards a new generation of dynamics software with algebraically
assisted numerics.
8. Outline of an opportunity for the combined use of system measurements and
model based software for real time control of oscillations.
9. Identification of key barriers to developing software to assist the real time
suppression and avoidance of oscillations.
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