A Multi-Step Reconfiguration Model for Active Distribution Network Restoration Integrating DG Start-Up Sequences
Autor: | Rachid Cherkaoui, Hossein Sekhavatmanesh |
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Rok vydání: | 2020 |
Předmět: |
safety
Mathematical optimization Optimization problem Distribution networks Computer science multi-step reconfiguration tie-switch 020209 energy dg Systems and Control (eess.SY) 02 engineering and technology Electrical Engineering and Systems Science - Systems and Control FOS: Electrical engineering electronic engineering information engineering 0202 electrical engineering electronic engineering information engineering distribution network distribution-systems Renewable Energy Sustainability and the Environment load modeling convex optimization problem 020208 electrical & electronic engineering Process (computing) Control reconfiguration AC power Start up switches load breaker Decision variables load flow restoration service optimization generators sectionalizing switch Energy (signal processing) |
Zdroj: | IEEE Transactions on Sustainable Energy. 11:2879-2888 |
ISSN: | 1949-3037 1949-3029 |
DOI: | 10.1109/tste.2020.2980890 |
Popis: | The ever-increasing penetration of Distributed Generators (DGs) in distribution networks suggests to enable their potentials in better fulfilling the restoration objective. The objective of the restoration problem is to resupply the maximum energy of loads considering their priorities using minimum switching operations. Basically, it is desired to provide a unique configuration that is valid regarding the load and generation profiles along the entire restorative period . However, this unique configuration may not satisfy at the same time: I) the DG start-up requirements at the beginning of the restoration plan and II) the topological conditions that would allow the DG to provide later on the most efficient support for the supply of loads. Therefore, it is proposed in this article to allow a limited number of reconfiguration steps according to the DG start-up requirements. In addition, this article presents a novel formulation for the reconfiguration problem that accounts for partial restoration scenarios where the whole unsupplied area cannot be restored. The decision variables of the proposed multi-step restoration problem are: I) the line switching actions at each step of the reconfiguration process, II) the load switching actions during the whole restorative period and, III) the active/reactive power dispatch of DGs during the whole restorative period . A relaxed AC power flow formulation is integrated to the optimization problem in order to ensure the feasibility of the solution concerning the operational safety constraints. The overall model is formulated in terms of a mixed-integer second-order cone programming. Two simulation scenarios are studied in order to illustrate different features of the proposed strategy and to demonstrate its effectiveness particularly in the case of large-scale outages in distribution networks. |
Databáze: | OpenAIRE |
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