Imperial College London
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DrJoan MarcRodriguez Bernuz

Faculty of Engineering, Department of Electrical and Electronic Engineering

Visiting Researcher
 
 
 
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Contact

 

j.rodriguez15

 
 
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Location

 

607Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Rodriguez:2021:10.1109/SGES51519.2020.00086,
author = {Rodriguez, Bernuz JM and Junyent, Ferre A and Xiang, X},
doi = {10.1109/SGES51519.2020.00086},
pages = {453--458},
publisher = {IEEE},
title = {Optimal droop offset adjustments for accurate energy trading in rural DC mini-grid clusters},
url = {http://dx.doi.org/10.1109/SGES51519.2020.00086},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Off-grid micro-grids and solar home systems have become an enabler for the electrification of rural areas in developing countries. Their future integration into full-scale grids poses multiple technical challenges. This paper presents a concept of local DC mini-grid formed by the interconnection of nearby micro-grids. This is envisioned as a step towards the bottom-up development of a larger grid. The paper places special emphasis on the analysis of the controller structure, which is based on a variation of the common droop controller. Generally, decentralised droop schemes present inherent limitations to achieve, simultaneously, DC voltage regulation and accurate energy tracking. The decentralised controller proposed here improves conventional approaches by optimally adjusting the droop controller setpoints based on an Optimal Power Flow (OPF) algorithm that takes into account the characteristics of individual converters and the energy trading commands. This approach can benefit from the communication layer required by the energy trading system. The control design of the mini-grid is customised for its deployment on a variation of the dual active bridge (DAB) power electronic converter. Despite the use of a centralised OPF, the system stability is guaranteed by the decentralised low-level controller. The performance of the control approach and its sensitivity to unknown system parameters is measured and validated through detailed simulation studies.
AU  - Rodriguez,Bernuz JM
AU  - Junyent,Ferre A
AU  - Xiang,X
DO  - 10.1109/SGES51519.2020.00086
EP  - 458
PB  - IEEE
PY  - 2021///
SP  - 453
TI  - Optimal droop offset adjustments for accurate energy trading in rural DC mini-grid clusters
UR  - http://dx.doi.org/10.1109/SGES51519.2020.00086
UR  - http://hdl.handle.net/10044/1/84531
ER  -
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