11 papers
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…
Large-Signal Stability of Power Systems with Mixtures of GFL, GFM and GSP Inverters
Yifan Zhang, Yaoxin Wang, Yunjie Gu +5
Grid-following (GFL) inverters have very different large-signal stability characteristics to synchronous generators, and convenient concepts such as the equal-area criterion and gl…
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…