We investigate the interplay of rotor-angle and voltage stability in electric power systems. To this end, we carry out a local stability analysis of the third-order model which entails the classical power-swing equations and the voltage dynamics. We provide necessary and sufficient stability conditions and investigate different routes to instability. For the special case of a two-bus system, we analytically derive a global stability map. Published by AIP Publishing.
Sharafutdinov, K., Gorjao, L. R., Matthiae, M., Faulwasser, T., & Witthaut, D. (2018). Rotor-angle versus voltage instability in the third-order model for synchronous generators. Chaos, 28(3), . https://doi.org/10.1063/1.5002889