Aggregation and Control of Supermarket Refrigeration Systems in a Smart Grid

Rasmus Pedersen, John Schwensen, Benjamin Biegel, Jakob Stoustrup, Torben Green

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

15 Citations (Scopus)
240 Downloads (Pure)

Abstract

In this work, control strategies for aggregation of a portfolio of supermarkets towards the electricity balancing market, is investigated. The supermarkets are able to shift the power consumption in time by pre-cooling the contained foodstuff. It is shown how the flexibility of an individual supermarket can be modeled and how this model can be used by an aggregator to manage the portfolio to deliver upward and downward regulation. Two control strategies for managing the portfolio to follow a power reference are presented and compared. The first strategy is a non-convex predictive control strategy while the second strategy consists of a PI controller and a dispatch algorithm. The predictive controller has a high performance but is computationally heavy. In contrast the PI/dispatch strategy has lower performance, but requires little computational effort and scales well with the number of supermarkets. Two simulations are conducted based on high-fidelity supermarket models: a small-scale simulation with 20 supermarkets where the performance of the two strategies are compared and a large-scale simulation with 400 supermarkets which only the PI/dispatch controller is able to handle. The large-scale simulation shows how a portfolio of 400 supermarkets successfully can be used for upward regulation of 900 kW for a two hour period.
Original languageEnglish
Title of host publicationProceedings of the 19th IFAC World Congress, 2014
Volume19
PublisherIFAC Publisher
Publication date26 Aug 2014
Pages9942-9949
ISBN (Print)978-3-902823-62-5
DOIs
Publication statusPublished - 26 Aug 2014
Event19th World Congress of the International Federation of Automatic Control, IFAC 2014 - Cape Town, South Africa
Duration: 24 Aug 201429 Aug 2014

Conference

Conference19th World Congress of the International Federation of Automatic Control, IFAC 2014
CountrySouth Africa
CityCape Town
Period24/08/201429/08/2014
SeriesI F A C Workshop Series
ISSN1474-6670

Fingerprint

Refrigeration
Agglomeration
Controllers
Electric power utilization
Electricity
Cooling

Cite this

Pedersen, R., Schwensen, J., Biegel, B., Stoustrup, J., & Green, T. (2014). Aggregation and Control of Supermarket Refrigeration Systems in a Smart Grid. In Proceedings of the 19th IFAC World Congress, 2014 (Vol. 19, pp. 9942-9949). IFAC Publisher. I F A C Workshop Series https://doi.org/10.3182/20140824-6-ZA-1003.00268
Pedersen, Rasmus ; Schwensen, John ; Biegel, Benjamin ; Stoustrup, Jakob ; Green, Torben. / Aggregation and Control of Supermarket Refrigeration Systems in a Smart Grid. Proceedings of the 19th IFAC World Congress, 2014. Vol. 19 IFAC Publisher, 2014. pp. 9942-9949 (I F A C Workshop Series).
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Pedersen, R, Schwensen, J, Biegel, B, Stoustrup, J & Green, T 2014, Aggregation and Control of Supermarket Refrigeration Systems in a Smart Grid. in Proceedings of the 19th IFAC World Congress, 2014. vol. 19, IFAC Publisher, I F A C Workshop Series, pp. 9942-9949, 19th World Congress of the International Federation of Automatic Control, IFAC 2014 , Cape Town, South Africa, 24/08/2014. https://doi.org/10.3182/20140824-6-ZA-1003.00268

Aggregation and Control of Supermarket Refrigeration Systems in a Smart Grid. / Pedersen, Rasmus; Schwensen, John; Biegel, Benjamin; Stoustrup, Jakob; Green, Torben.

Proceedings of the 19th IFAC World Congress, 2014. Vol. 19 IFAC Publisher, 2014. p. 9942-9949 (I F A C Workshop Series).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Pedersen R, Schwensen J, Biegel B, Stoustrup J, Green T. Aggregation and Control of Supermarket Refrigeration Systems in a Smart Grid. In Proceedings of the 19th IFAC World Congress, 2014. Vol. 19. IFAC Publisher. 2014. p. 9942-9949. (I F A C Workshop Series). https://doi.org/10.3182/20140824-6-ZA-1003.00268