6 papers · 1 filter
Cluster-Based Distributed Small-Signal Stability Certificates for Grid-Forming Inverter Networks
Bhathiya Rathnayake, Sijia Geng
Large-scale power networks are often organized by geography, ownership, or control authority, making stability certificates that require a fully assembled global model challenging.…
Decentralized Stability Certificates in IBR-Dominated Grids: The Role of the Network State
Zhimeng Wang, Sushobhan Chatterjee, Sijia Geng +2
Small-signal instabilities, such as unforced sub-synchronous oscillations (SSOs), are increasingly observed in inverter-based resource (IBR) dominated grids. While decentralized st…
Decentralized Stability-Constrained Optimal Power Flow for Inverter-Based Power Systems
Shigeng Wang, Sijia Geng
Future inverter-dominated power systems feature higher variability and more stressed operating conditions, which motivates the consideration of stability in operational settings. E…
Data-Driven Koopman Predictive Control for Frequency Regulation of Power Systems using Black-Box IBRs
Sohrab Rezaei, Xiaomo Wang, Sijia Geng
Model uncertainty of inverter-based resources (IBRs) presents significant challenges for power system control and stability. This work studies secondary frequency regulation in inv…
Evaluating Power Flow Manifold from Local Data around a Single Operating Point via Geodesics
Qirui Zheng, Dan Wu, Franz-Erich Wolter +1
The widespread adoption of renewable energy poses a challenge in maintaining a feasible operating point in highly variable scenarios. This paper demonstrates that, within a feasibl…
Grid-Forming Control with Assignable Voltage Regulation Guarantees and Safety-Critical Current Limiting
Bhathiya Rathnayake, Sijia Geng
This paper develops a nonlinear grid-forming (GFM) controller with provable voltage-formation guarantees, with over-current limiting enforced via a control-barrier-function (CBF)-b…