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| Content Provider | IET Digital Library |
|---|---|
| Author | Sigrist, Lukas Fernández, Jose Maria Lobato, Enrique Rouco, Luis Saboya, Inmaculada Diez, Luis |
| Abstract | This study presents a thermo-electric model to implement the energy management system (EMS) of an off-grid system. The EMS is formulated as a unit commitment problem where thermal and electrical components are dispatched simultaneously to minimise system operation costs. Particular attention is paid to the operation of heat pumps. The model contemplates a variable coefficient of performance (COP) of heat pumps. COP is different for the cold water and hot water circuit and depends on the output temperatures of the heat pump and the heat pump operation mode. Furthermore, the heat pumps’ ability to switch operation modes is also considered as well as the limitation of heat pumps to operate when hot water thermal energy storage is nearly full. The developed model has been successfully applied to an existing off-grid system at Norvento Enerxia's headquarters in Spain by simulating its operation during a winter week. The impact of modelling multi-mode operation of heat pumps with variable COP has been compared with single-mode operations with either fixed or variable COP. The proposed integrated approach of solving the electrical and thermal dispatch simultaneously has also been compared with a sequential resolution of first the thermal and then the electrical dispatch. |
| Starting Page | 961 |
| Ending Page | 972 |
| Page Count | 12 |
| ISSN | 17521416 |
| Volume Number | 13 |
| e-ISSN | 17521424 |
| Issue Number | Issue 6, Apr (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/13/6 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2019-01-10 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Air Conditioning Cold Water COP Electrical Dispatch Energy Management System Heat Pump Operation Mode Heat Pumps Hot Water Circuit Hot Water Thermal Energy Storage Multimode Operation Modelling Off-grid System Power Generation Dispatch Power Generation Scheduling Power System Economics Power System Managemen Power System Operation System Operation Cost Thermal Dispatch Thermal Energy Storage Thermo-electric Energy Management System Thermo-electric Model Variable Coefficient of Performance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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