Optimization of Size and Operation of Stand-Alone Renewable-Based Systems with Diesel and Hybrid Pumped Hydro Storage–Battery Storage Considering Uncertainties

Dufo-López, Rodolfo (Universidad de Zaragoza) ; Lujano-Rojas, Juan M. (Universidad de Zaragoza)

Resumen: Currently, the electrical supply in stand-alone systems is usually composed of renewable sources with fossil-fuel generators and battery storage. This study shows a novel model for the metaheuristic–stochastic optimization (minimization of the net present cost, and NPC) of sizing and energy management for stand-alone photovoltaic (PV)–wind–diesel systems with hybrid pumped hydro storage (PHS)–battery storage systems. The model is implemented in C++ programming language. To optimize operations—thus reducing PHS losses and increasing battery lifetimes—optimal energy management can optimize the power limits of using the PHS or battery to supply or store energy. The probabilistic approach considers the variability of wind speed, irradiation, temperature, load, and diesel fuel price inflation. The variable efficiencies of the components and losses and advanced models for battery degradation are considered. This methodology was applied to Graciosa Island (Portugal), showing that, compared with the current system, the optimal system (with a much higher renewable power and a hybrid PHS–battery storage) can reduce the NPC by half, reduce life cycle emissions to 14%, expand renewable penetration to 96%, and reduce the reserve capacity shortage to zero.

Idioma: Inglés

DOI: 10.3390/batteries11020070

Año: 2025

Publicado en: Batteries 11, 2 (2025), 70 [32 pp.]
ISSN: 2313-0105

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2021-123172OB-I00
Financiación: info:eu-repo/grantAgreement/EUR/AEI/TED2021-129801B-I00
Financiación: info:eu-repo/grantAgreement/EUR/ISCII-ERDF/A way to make Europe

Tipo y forma: Article (Published version)

Área (Departamento): Área Ingeniería Eléctrica (Dpto. Ingeniería Eléctrica)