Ahead of Print article ยท Journal article
Operation of supermarket refrigeration units: a coupled district heating and electric network approach
Department of Electrical Engineering, Technical University of Denmark1
Center for Electric Power and Energy, Centers, Technical University of Denmark2
Energy System Management, Center for Electric Power and Energy, Centers, Technical University of Denmark3
CITIES - Centre for IT-Intelligent Energy Systems, Centers, Technical University of Denmark4
Energy system integration between district heating and electrical domains is required for harvesting potential flexibility arising from sector coupling and support the transition to smart energy systems. This work presents a use case for using excess compressor capacity in refrigeration systems to locally couple district heating and electrical distribution networks by providing heat peak-shaving services to the district heating network.
A tool-chain for explicit modelling of the electrical, thermal, and control domain using co-simulation is presented. It is based on a quasi-static electrical load flow model, a dynamic thermal-hydraulic district heating model and dedicated controller simulators integrated into the co-simulation information flow.
The use case is implemented using the tool-chain and studied for different peak-shaving services request levels. The result shows that the proposed tool-chain is suitable for studying operational aspects of domain-linking components both at the network and the unit level. It is shown that the refrigeration unit can provide peak-shaving services while satisfying the primary cooling needs.
Providing heat peak-shaving services allows distributed feed-in into the district heating network and potential new revenues. However, the refrigeration cycle coefficient of performance decreases as its operation changes from air/air to air/water mode.
Language: | English |
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Publisher: | IET |
Year: | 2020 |
Pages: | 80-91 |
ISSN: | 25168401 |
Types: | Ahead of Print article and Journal article |
DOI: | 10.1049/iet-esi.2019.0059 |
ORCIDs: | Jensen, Tue Vissing , Gehrke, Oliver and Bindner, Henrik William |
compressor capacity compressors control domain controller simulators cosimulation information flow coupled district heating district heating district heating network domain-linking components dynamic thermal-hydraulic district heating model electrical distribution networks electrical domain energy system integration harvesting potential flexibility heat peak-shaving services hydraulic systems load flow peak-shaving services request levels power distribution control primary cooling quasistatic electrical load flow model refrigeration refrigeration cycle coefficient refrigeration systems sector coupling smart energy systems space cooling supermarket refrigeration units thermal domain tool-chain