Challen, C;
Jensen, M;
Skarvelis-Kazakos, S;
(2021)
Experimental testing of a real aggregator system performing rigorous optimal control of electrical and thermal storage.
Journal of Energy Storage
, 43
, Article 103188. 10.1016/j.est.2021.103188.
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Experimental Testing of a Real Aggregator System Performing Rigorous Optimal Control of Electrical and Thermal Storage_ACCEPTED.pdf - Accepted Version Download (2MB) | Preview |
Abstract
This paper provides an experimentally validated optimal control approach based on a Hamilton–Jacobi–Bellman (HJB) model for optimising aggregated distributed energy resources across multiple energy carriers. The research incorporates nonlinear effects arising from storage degradation, conversion efficiency and self-discharge as well as multiple energy carrier storage. A semi-Lagrangian HJB solver was implemented on low-cost digital controllers, and integrated into a real fully functional cloud-based aggregation platform. The computational cost is kept at a minimum, enabling on-line computations on the low-cost controller, while maintaining a rigorous proof of convergence to the theoretical value function of the nonlinear, non-convex optimal control problem. The controller links into a distributed optimal control platform that is using local as well as cloud-based information and performs all the computation and decision-making locally. The distributed controllers were tested and validated on site with an electrical and a thermal storage device. Experimental results confirm that the framework is practical, accommodates nonlinear effects and inaccurate external forecasts, has a small computational cost, is robust and can deliver significant cost benefits to the stakeholders.
Type: | Article |
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Title: | Experimental testing of a real aggregator system performing rigorous optimal control of electrical and thermal storage |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1016/j.est.2021.103188 |
Publisher version: | https://doi.org/10.1016/j.est.2021.103188 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
Keywords: | Energy storage, Optimal control, Energy management, Aggregation, Multiple energy carriers, Integrated energy system |
UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10156975 |
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