Principal Investigator Konstantin Turitsyn
Heavily loaded grids may experience a voltage instability resulting in blackout in most dramatic scenarios. Stability margin of safe operating points depends on the dynamic response of the loads that are difficult to model due to inherent uncertainty and lack of observability.
To address this problem, we developed novel robust stability certificates based on structured Lyapunov functions. These certificates provide mathematical guarantees that an operating point is stable for any load response. Safe regions identified with the approach can be naturally used for security assessment and emergency control.