Abstract
This paper presents a non-linear optimization problem based on nodal current injections to solve the optimal energy management of unbalanced, three-phase, grid-connected microgrids. The focus is on the modelling of small synchronous machines under unbalanced operation. Inverter-interfaced distributed energy resources, i.e., renewable sources and energy storage systems, are also considered and described. The proposed formulation minimizes the cost of the energy consumed by the microgrid while satisfying active and reactive power balances, the devices operational constraints, as well as current and voltage operational limits. The proposed model is tested using the IEEE 123 node test feeder and compared to commonly used formulations. Simulation results show the impact of unbalanced models on the energy management of three-phase microgrids.
Original language | English |
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Title of host publication | 2019 IEEE Milan PowerTech, PowerTech 2019 |
Place of Publication | Piscataway |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 1-6 |
Number of pages | 6 |
ISBN (Electronic) | 978-1-5386-4722-6 |
DOIs | |
Publication status | Published - Jun 2019 |
Externally published | Yes |
Event | 2019 IEEE PowerTech Milan - Milan, Italy Duration: 23 Jun 2019 → 27 Jun 2019 |
Conference
Conference | 2019 IEEE PowerTech Milan |
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Abbreviated title | PowerTech 2019 |
Country/Territory | Italy |
City | Milan |
Period | 23/06/19 → 27/06/19 |
Keywords
- Optimal energy management
- Renewable energy sources
- Unbalanced generator model
- Unbalanced microgrid