4 papers
Mapping of Dynamics between Mechanical and Electrical Ports in SG-IBR Composite Grids
Yitong Li, Yunjie Gu, Timothy C. Green
Power grids are traditionally dominated by synchronous generators (SGs) but are currently undergoing a major transformation through the increasing integration of inverter-based res…
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…
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…
Interpreting Frame Transformations as Diagonalization of Harmonic Transfer Functions
Yunjie Gu, Yitong Li, Timothy C. Green
Analysis of ac electrical systems can be performed via frame transformations in the time-domain or via harmonic transfer functions (HTFs) in the frequency-domain. The two approache…