Active Distribution Networks with Microgrid and Distributed Energy Resources Optimization Using Hierarchical Model

Thaís M. Blasi, Cyntia C. C. B. de Aquino, Rafael S. Pinto, Mauro O. de Lara Filho, Thelma S. P. Fernandes, Clodomiro U. Vila, Alexandre R. Aoki, Rodrigo B. dos Santos and Fabricio H. Tabarro
Additional contact information
Thaís M. Blasi: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Cyntia C. C. B. de Aquino: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Rafael S. Pinto: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Mauro O. de Lara Filho: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Thelma S. P. Fernandes: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Clodomiro U. Vila: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Alexandre R. Aoki: Department of Electrical Engineering, Federal University of Paraná, Curitiba 81531-990, Brazil
Rodrigo B. dos Santos: Copel Distribution, Curitiba 81200-240, Brazil
Fabricio H. Tabarro: Copel Distribution, Curitiba 81200-240, Brazil

Energies, 2022, vol. 15, issue 11, 1-22

Abstract: Distribution networks have undergone a series of changes, with the insertion of distributed energy resources, such as distributed generation, energy storage systems, and demand response, allowing the consumers to produce energy and have an active role in distribution systems. Thus, it is possible to form microgrids. From the active grid’s point of view, it is necessary to plan the operation considering the distributed resources and the microgrids connected to it, aiming to ensure the maintenance of grid economy and operational safety. So, this paper presents the proposition of a hierarchical model for planning the daily operation of active distribution grids with microgrids. In this case, the entire grid operation is optimized considering the results from the microgrid optimization itself. If none of the technical constraints, for example voltage levels, are reached, the grid is optimized, however, if there are some violations in the constraints feedback is sent to the internal microgrid optimization to be run again. Several scenarios are evaluated to verify the iteration among the controls in a coordinated way allowing the optimization of the operation of microgrids, as well as of the distribution network. A coordinated and hierarchical operation of active distribution networks with microgrids, specifically when they have distributed energy resources allocated and operated in an optimized way, results in a reduction in operating costs, losses, and greater flexibility and security of the whole system.

Keywords: active distribution networks; distributed energy resources; microgrids; optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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