Economic Operation Optimization Under Real-Time Pricing for an Energy Management System in a Redundancy-Based Microgrid

Autor(es)

Fagundes, Thales Augusto ; Fuzato, Guilherme Henrique Favaro ; Magossi, Rafael Fernando Quirino ; Flores, Manuel Antonio Barrios ; Vasquez, Juan C. ; Guerrero, Josep M. ; Machado, Ricardo Quadros

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS; v. 71, n. 8, p. 11-pg., 2023-11-02.

Resumo

DC microgrids (MGs) represent self-contained systems for distributing and managing electricity locally, offering advantages in terms of efficiency and control. This article proposes the optimization of redundancy-based dc MG, emphasizing the integration of an intelligent algorithm to minimize operational costs under real-time pricing conditions and also increase the efficiency operation. The redundancy-based dc MG consists of a cascaded bidirectional Cuk converter (CBC) linked to a cascaded bidirectional boost converter, sharing two battery energy storage system (BESS) units as common inputs. Thereby, two boost converters interface the dc utility and fuel cell (FC) to the dc-link of the CBC. The redundancy-based dc MG operates with a coordinated and decentralized control among the dc utility, FC and two BESS units. The energy management system (EMS) employs a droop control for the dc utility and FC, while BESS units adhere to a state-of-charge (SoC)-sharing function. In addition, the particle swarm optimization dynamically adjusts EMS parameters for optimal real-time performance. Then, a stability analysis determines MG operational boundaries, and the effectiveness of the method is confirmed through experiments using Typhoon HIL and dSPACE setups. Finally, comparative evaluations against traditional SoC-based droop and genetic algorithms demonstrate the cost reduction of the proposed approach. (AU)

• Processo FAPESP: 20/05865-3 - Equalização de dispositivos armazenadores de energia para o gerenciamento e otimização de microrredes CC que utilizam fontes alternativas de energia como fonte primária
• Beneficiário: Thales Augusto Fagundes
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/20721-4 - Sistema de interconexão de geradores distribuídos em redes de distribuição: síntese de micro grids
• Beneficiário: Ricardo Quadros Machado
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 22/02721-6 - Equalização de dispositivos armazenadores de energia para o gerenciamento e otimização de microrredes CC que utilizam fontes alternativas de energia como fonte primária
• Beneficiário: Thales Augusto Fagundes
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado