Imperial College London
Portrait Picture

Professor Tim Green, FREng

Faculty of Engineering, Department of Electrical and Electronic Engineering

Academic Leader for Sustainability, Professor
 
 
 
//

Contact

 

+44 (0)20 7594 6171t.green Website CV

 
 
//

Location

 

1107EElectrical EngineeringSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Li:2022:10.1109/TPWRS.2022.3141882,
author = {Li, Y and Gu, Y and Green, T},
doi = {10.1109/TPWRS.2022.3141882},
journal = {IEEE Transactions on Power Systems},
pages = {3423--3433},
title = {Mapping of dynamics between mechanical and electrical ports in SG-IBR composite grids},
url = {http://dx.doi.org/10.1109/TPWRS.2022.3141882},
volume = {37},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Power grids are traditionally dominated by synchronous generators (SGs) but are currently undergoing a major transformation due to the increasing integration of inverter-based resources (IBRs). The state space method with transparent apparatus models can be readily used. However, models of IBRs are usually not disclosed by manufacturers. Alternatively, the port-based approach represents dynamics by input-output transfer functions without exposing internal states. These transfer functions at various ports are normally configured with a particular focus: an SG-dominated grid is traditionally analyzed in a mechanical-centric view which ignores fast electrical dynamics and focuses on the torque-speed dynamics, whereas the emergent IBR-dominated grid usually takes an electrical-centric view which focuses on the voltage-current interaction. In this article, a new perspective called the port-mapping method is proposed to combine these two views. Specifically, the mechanical dynamics are mapped to the electrical impedance seen at the electrical port; and the electrical dynamics are also mapped to the torque coefficient seen at the mechanical port. The bidirectional mapping gives additional flexibility and insights to analyze the sub-system interactions in whole-system dynamics and guide the tuning of parameters. Application of the proposed method is illustrated in three cases with increasing scales.
AU  - Li,Y
AU  - Gu,Y
AU  - Green,T
DO  - 10.1109/TPWRS.2022.3141882
EP  - 3433
PY  - 2022///
SN  - 0885-8950
SP  - 3423
TI  - Mapping of dynamics between mechanical and electrical ports in SG-IBR composite grids
T2  - IEEE Transactions on Power Systems
UR  - http://dx.doi.org/10.1109/TPWRS.2022.3141882
UR  - http://hdl.handle.net/10044/1/94105
VL  - 37
ER  -
Download