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Energies 2018, 11(12), 3399; https://doi.org/10.3390/en11123399

Prospects of a Meshed Electrical Distribution System Featuring Large-Scale Variable Renewable Power

1
C-MAST, University of Beira Interior, 6201-001 Covilhã, Portugal
2
Energy and Environment Department, Economic and Social Research Institute, Dublin, Ireland
3
Instituto de Telecomunicações and University of Beira Interior, 6201-001 Covilhã, Portugal
4
INESC TEC and the Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
5
INESC-ID, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Received: 27 October 2018 / Revised: 24 November 2018 / Accepted: 1 December 2018 / Published: 4 December 2018
(This article belongs to the Special Issue Optimisation Models and Methods in Energy Systems)
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Abstract

Electrical distribution system operators (DSOs) are facing an increasing number of challenges, largely as a result of the growing integration of distributed energy resources (DERs), such as photovoltaic (PV) and wind power. Amid global climate change and other energy-related concerns, the transformation of electrical distribution systems (EDSs) will most likely go ahead by modernizing distribution grids so that more DERs can be accommodated. Therefore, new operational strategies that aim to increase the flexibility of EDSs must be thought of and developed. This action is indispensable so that EDSs can seamlessly accommodate large amounts of intermittent renewable power. One plausible strategy that is worth considering is operating distribution systems in a meshed topology. The aim of this work is, therefore, related to the prospects of gradually adopting such a strategy. The analysis includes the additional level of flexibility that can be provided by operating distribution grids in a meshed manner, and the utilization level of variable renewable power. The distribution operational problem is formulated as a mixed integer linear programming approach in a stochastic framework. Numerical results reveal the multi-faceted benefits of operating distribution grids in a meshed manner. Such an operation scheme adds considerable flexibility to the system and leads to a more efficient utilization of variable renewable energy source (RES)-based distributed generation. View Full-Text
Keywords: electrical distribution systems; meshed topology; mixed integer linear programing; stochastic programming; variable renewable power; flexibility option electrical distribution systems; meshed topology; mixed integer linear programing; stochastic programming; variable renewable power; flexibility option
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Cruz, M.R.M.; Fitiwi, D.Z.; Santos, S.F.; Mariano, S.J.P.S.; Catalão, J.P.S. Prospects of a Meshed Electrical Distribution System Featuring Large-Scale Variable Renewable Power. Energies 2018, 11, 3399.

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