3 papers
eess.SY2022
Impedance-based Root-cause Analysis: Comparative Study of Impedance Models and Calculation of Eigenvalue Sensitivity
Yue Zhu, Yunjie Gu, Yitong Li +1
Impedance models of power systems are useful when state-space models of apparatus such as inverter-based resources (IBRs) have not been made available and instead only black-box im…
eess.SY2021
Participation Analysis in Impedance Models: The Grey-Box Approach for Power System Stability
Yue Zhu, Yunjie Gu, Yitong Li +1
This paper develops a grey-box approach to small-signal stability analysis of complex power systems that facilitates root-cause tracing without requiring disclosure of the full det…
eess.SY2019
Impedance-Based Whole-System Modeling for a Composite Grid via Frame-Dynamics Embedding
Yunjie Gu, Yitong Li, Yue Zhu +1
The paper establishes a methodology to overcome the difficulty of dynamic frame alignment and system separation in impedance modeling of ac grids, and thereby enables impedance-bas…