6 papers
Revisiting The PBH Test: Fast Uncontrollability Certificates via Krylov Methods
Ahmad F. Taha, Mohamad H. Kazma, Abdallah A. Albustami
This letter revisits the classical PBH test through the lens of finite-horizon reachability. By casting state transfer as a minimum energy, primal optimization problem, we show tha…
The Iberian Blackout: A Black Swan or a Gray Rhino? A Protection-Aware Dynamic Voltage Security Assessment
Abdallah Alalem Albustami, Ahmad F. Taha
On 28 April 2025, the Iberian mainland power system collapsed after a rapid voltage rise, widespread generation disconnections, and loss of synchronism. The ENTSO-E Expert Panel fi…
Power System CBFs
Abdallah Alalem B. Albustami, Ahmad F. Taha, Taylor T. Johnson
Control barrier functions (CBFs) have become a standard tool in safety critical-control systems. CBFs convert state constraints into real time control conditions that certify forwa…
DAE-Aware Bayesian Inference for Joint Generator-Network Parameter Estimation
Abdallah Alalem Albustami, Ahmad F. Taha, Sankaran Mahadevan
This paper addresses the classic problem of parameter estimation (PE) in multimachine power system models. Such models are typically described by a set of nonlinear differential-al…
Breaking the Flow and the Bank: Stealthy Cyberattacks on Water Network Hydraulics
Abdallah Alalem Albustami, Ahmad F. Taha
As water distribution networks (WDNs) become increasingly connected with digital infrastructures, they face greater exposure to cyberattacks that threaten their operational integri…
Unmasking Stealthy Attacks on Nonlinear DAE Models of Power Grids
Abdallah Alalem Albustami, Ahmad F. Taha, Elias Bou-Harb
Smart grids are inherently susceptible to various types of malicious cyberattacks that have all been documented in the recent literature. Traditional cybersecurity research on powe…