Search Results for author: Timothy C. Green

Found 5 papers, 5 papers with code

Impedance-based Root-cause Analysis: Comparative Study of Impedance Models and Calculation of Eigenvalue Sensitivity

1 code implementation4 Apr 2022 Yue Zhu, Yunjie Gu, Yitong Li, Timothy C. Green

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 impedance models are available.

Revisiting Grid-Forming and Grid-Following Inverters: A Duality Theory

1 code implementation27 May 2021 Yitong Li, Yunjie Gu, Timothy C. Green

Power electronic converters for integrating renewable energy resources into power systems can be divided into grid-forming and grid-following inverters.

Mapping of Dynamics between Mechanical and Electrical Ports in SG-IBR Composite Grids

1 code implementation13 May 2021 Yitong Li, Yunjie Gu, Timothy C. Green

The SG-dominated grid is traditionally analyzed in a mechanical-centric view which ignores fast electrical dynamics and focuses on the torque-speed dynamics.

The intrinsic communication in power systems: a new perspective to understand stability

1 code implementation30 Mar 2021 Yunjie Gu, Yitong Li, Timothy C. Green

The large-scale integration of converter-interfaced resources in electrical power systems raises new threats to stability which call for a new theoretic framework for modelling and analysis.

Participation Analysis in Impedance Models: The Grey-Box Approach for Power System Stability

1 code implementation8 Feb 2021 Yue Zhu, Yunjie Gu, Yitong Li, Timothy C. Green

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 details of the internal control structure of apparatus connected to the system.

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