Journal
ELECTRIC POWER SYSTEMS RESEARCH
Volume 189, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.epsr.2020.106758
Keywords
Hierarchical control; Microgrid; Model predictive control; Kalman filter
Categories
Funding
- H2020 ERA Net Smart Grids+ project microGRId Positioning - uGRIP
- Croatian Science Foundation
- European Union through the European Social Fund [PZS-2019-02-7747]
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This paper presents a three-level hierarchical control approach for microgrids in grid-connected mode. The first level optimizes microgrid operation in the long run, e.g. 15 min, with the goal of minimizing microgrid's operating costs. The second level takes part in frequency control in grid-connected microgrids. It utilizes a Model Predictive Controller and Kalman Filter based on available frequency measurements in the microgrid. The third level is the plant level, in which classical controllers are used for tracking optimal set points received from upper two control levels. The developed control scheme is applied to the Smart Grid Lab (SGLab) at the University of Zagreb Faculty of Electrical Engineering and Computing. The findings from this close-to-real-world application are also presented.
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