144756 20240906111328.0 doi 10.24084/reepqj24.395 sideral 139489 ART-2024-139489 eng Dufo López, Rodolfo Universidad de Zaragoza (orcid)0000-0002-1490-6423 Short term energy management in stand-alone PV-battery-diesel systems 2024 In this work, the short term (daily) operation of an off-grid hybrid PV-diesel-battery system is optimized by genetic algorithms. An integer variable (0, 1 or 2) for each hour of the day decides the way the battery works. With the forecast of the hourly irradiation, temperature and load consumption for the next day, and estimating the state of charge of the battery (SOC) at the first hour of the day, we perform the optimization of the integer variables for the 24 hours of next day. To avoid inadmissible computation time, the optimization is performed by using genetic algorithms (GA) obtaining in roughly 1 hour the optimal solution or a solution near the optimal one. The optimization tries to obtain the minimal total cost of the daily operation while supplying the whole load. We compare the results of the optimization with the typical control strategies (load following, cycle charging and set point strategies), obtaining better results with the new optimized strategy. The reduction in the operational cost obtained varies from 2.5% to 62%, compared to the typical control strategies (load following or cycle charging). Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/AEI/PID2021-123172OB-I00 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Lujano-Rojas, Juan M. Universidad de Zaragoza (orcid)0000-0002-5801-0602 Bernal-Agustín, José L. Universidad de Zaragoza (orcid)0000-0003-2813-1240 Artal-Sevil, Jesús S. Universidad de Zaragoza (orcid)0000-0001-7764-235X Bayod-Rújula, Ángel A. Universidad de Zaragoza (orcid)0000-0002-1704-1584 5009 535 Universidad de Zaragoza Dpto. Ingeniería Eléctrica Área Ingeniería Eléctrica 2 (2024), 233-239 Renew. Energ., Environ. Power Qual. J. Renewable Energies, Environment & Power Quality Journal 3020-531X 872489 http://zaguan.unizar.es/record/144756/files/texto_completo.pdf Versión publicada 2265720 http://zaguan.unizar.es/record/144756/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:144756 articulos driver 2024-09-06-10:25:28 ARTICLE