A Generalized Model for the Optimal Operation of Microgrids in Grid-Connected and Islanded Droop-Based Mode

Autor(es)

Vergara, Pedro P. ^{[1, 2]} ; Rey, Juan M. ^[3] ; Lopez, Juan C. ^[1] ; Rider, Marcos J. ^[1] ; da Silva, Luiz C. P. ^[1] ; Shaker, Hamid R. ^[2] ; Jorgensen, Bo N. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Syst & Energy, BR-13083852 Campinas, SP - Brazil

^[2] Univ Southern Denmark, Ctr Energy Informat, DK-5230 Odense - Denmark

^[3] Univ Ind Santander Bucaramanga, Escuela Ingn Elect Elect & Telecomunicac, Bucaramanga 680002 - Colombia

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON SMART GRID; v. 10, n. 5, p. 5032-5045, SEP 2019.
• Citações Web of Science: 0

Resumo

In this paper, a new and generalized model for the optimal operation of microgrids is presented. The proposed mathematical model considers both the grid-connected (GC) and islanded (IS) operational modes. First, a mixed integer non-linear programming (MINLP) formulation is introduced, modeling the microgrid as an unbalanced ac three-phase electrical distribution system, comprising distributed generator (DG) units, battery systems and wind turbines. In GC mode, the frequency and the voltage magnitude references are imposed by the main grid at the point of common couple, while in IS mode, it is assumed that the DG units operate with droop control. Additionally, a set of convexification procedures are introduced in order to approximate the original MINLP model into a new convex formulation that can be solved using commercial solvers. The proposed model has been tested in a 25-bus microgrid for different scenarios, including one where a degradation of the voltage magnitude reference is observed. Results show that the proposed model is able to properly define the operational mode of the microgrid, based on the technical constraints of the system. (AU)

• Processo FAPESP: 15/09136-8 - Otimização de um portfólio tolerante a faltas em um cenário de Smart Grid
• Beneficiário: Pedro Pablo Vergara Barrios
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/04164-6 - Otimização de um portfólio tolerante a faltas em um cenário de Smart Grid
• Beneficiário: Pedro Pablo Vergara Barrios
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado