7 papers
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…
Dual Synchronous Generator: Inertial Current Source based Grid-Forming Solution for VSC
Huanhai Xin, Kehao Zhuang, Pengfei Hu +2
In order to improve dynamic characteristics of the power system with high-proportion renewable energy sources (RESs), it is necessary for the voltage source converter (VSC), interf…
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…
Modelling Hierarchical Structure between Dialogue Policy and Natural Language Generator with Option Framework for Task-oriented Dialogue System
Jianhong Wang, Yuan Zhang, Tae-Kyun Kim +1
Designing task-oriented dialogue systems is a challenging research topic, since it needs not only to generate utterances fulfilling user requests but also to guarantee the comprehe…
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…