Assessing Robust Stability of Power Systems using the Complex and Mixed SSV

Evaristo N Reyes, Marco A Pérez, and Arturo R Messina


Electromechanical oscillations, Robust stability, Structured singular value


The aim of this work is to evaluate the robust stability in power systems by comparing the use of the complex against the mixed structured singular value (SSV). This proposal includes a percent of complex perturbations to avoid the semi-continuity in the lower bound produced by the mixed SSV and consequently it allows to assess the impact of complex uncertainty in the system. Numerical simulations are performed on a multi-machine power system to show the advantages of the method as well as the challenges to overcome.

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