Generation of Alternative Battery Allocation Proposals in Distribution Systems by the Optimization of Different Economic Metrics within a Mathematical Model

Autor(es)

Martinez, Norberto ^[1] ; Tabares, Alejandra ^[1] ; Franco, John F. ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Dept Elect Engn, BR-15385000 Sao Paulo - Brazil

^[2] Sao Paulo State Univ UNESP, Sch Energy Engn, BR-19274000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENERGIES; v. 14, n. 6 MAR 2021.
• Citações Web of Science: 0

Resumo

Battery systems bring technical and economic advantages to electrical distribution systems (EDSs), as they conveniently store the surplus of cheap renewable generation for use at a more convenient time and contribute to peak shaving. Due to the high cost of batteries, technical and economic studies are needed to evaluate their correct allocation within the EDS. To contribute to this analysis, this paper proposes a stochastic mathematical model for the optimal battery allocation (OBA), which can be guided by the optimization of two different economic metrics: net present value (NPV) and internal rate of return (IRR). The effects of the OBA in the EDS are evaluated considering the stochastic variation of photovoltaic generation and load. Tests with the 33-node IEEE test system indicate that OBA results in voltage profile improvement (similar to 1% at peak time), peak reduction (31.17%), increased photovoltaic hosting capacity (18.8%), and cost reduction (3.06%). Furthermore, it was found that the IRR metric leads to a different solution compared to the traditional NPV optimization due to its inherent consideration of the relation between cash flow and investment. Thus, both NPV and IRR-based allocation alternatives can be used by the decision maker to improve economic and technical operation of the EDS. (AU)

• Processo FAPESP: 17/02831-8 - Aplicação de métodos de otimização no planejamento do sistema de distribuição de energia elétrica
• Beneficiário: John Fredy Franco Baquero
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/20990-9 - Novos modelos de otimização aplicados ao problema de planejamento de sistemas de distribuição no contexto de redes ativas
• Beneficiário: Alejandra Tabares Pozos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado