9 papers
Performance Limits and Tradeoffs of Power Systems Synchronization Recovery in Complex-Frequency Representation
Xiaoyu Peng, Zelin Sun, Zhongze Li +1
Power-system synchronization studies mainly ask whether synchronization can be achieved, whereas a complementary question is how well post-disturbance synchronization recovery can…
Decentralized and Equilibrium-Set-Oriented Stability Analysis and Control for Power Systems
Peng Yang, Liaoyuan Yang, Feng Liu
Conventional power-system stability analysis is largely centralized and centered on a single equilibrium point, which becomes increasingly restrictive in the presence of large-scal…
Relative-Degree Wall Restricts Passivity-Based Stability Analysis in Inverter-Dominant Grids
Xiaoyu Peng, Zhongze Li, Xi Ru +2
This letter reveals a fundamental limitation of passivity-based distributed stability analysis in power systems. Under the standard formulation, passivity certification inherently…
Toward less conservative distributed stability analysis of power systems via matrix-valued differential passivity indices
Xi Ru, Cong Fu, Zhongze Li +2
Passivity indices have been widely adopted to derive distributed stability certificates for power systems. Nevertheless, conventional passivity indices remain scalar-valued even fo…
Matrix-Valued Passivity Indices: Foundations, Properties, and Stability Implications
Xi Ru, Xiaoyu Peng, Xinghua Chen +3
The passivity index, a quantitative measure of a system's passivity deficiency or excess, has been widely used in stability analysis and control. Existing studies mostly rely on sc…
Positive Damping Region: A Graphic Tool for Passivization Analysis with Passivity Index
Xiaoyu Peng, Xi Ru, Zhongze Li +3
This paper presents a geometric framework for analyzing output-feedback and input-feedforward passivization of linear time-invariant systems. We reveal that a system is passivizabl…
Controlled Evolution-Based Day-Ahead Robust Dispatch Considering Frequency Security with Frequency Regulation Loads and Curtailable Loads
Kai Kang, Xiaoyu Peng, Kui Luo +2
With the extensive integration of volatile and uncertain renewable energy, power systems face significant challenges in primary frequency regulation due to instantaneous power fluc…
Compositional and Equilibrium-Free Stability Certification for Power Systems--Part II: Algorithms and Applications
Peng Yang, Yifan Su, Xiaoyu Peng +2
This two-part study develops a compositional and equilibrium-free framework for power system stability analysis. Building on the theoretical foundation established in Part I, i.e.,…
Compositional and Equilibrium-Free Stability Certification for Power Systems--Part I: Theory
Peng Yang, Xiaoyu Peng, Xi Ru +2
Stability certification for large-scale power systems is challenging due to heterogeneous device dynamics and time-varying operating conditions. This two-part paper develops an equ…