Optimal sizing of a hybrid grid-connected photovoltaic and wind power system
| Autor: | Rita Puig, Antoni Rius, Jordi-Roger Riba, Arnau González |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Escola d'Enginyeria d'Igualada, Universitat Politècnica de Catalunya. GIR - GIR Ambiental |
| Předmět: |
Engineering
renewable energy-systems design Management Monitoring Policy and Law Grid parity genetic algorithms Enginyeria química [Àrees temàtiques de la UPC] Grid-connected hybrid renewable energy system multiobjective optimization evolutionary algorithms Cost of electricity by source Solar photovoltaic power Sizing optimization Pumped-storage hydroelectricity Energia eòlica Wind power business.industry Mechanical Engineering Photovoltaic system Life-cycle cost Electrical engineering Building and Construction Renewable energy Reliability engineering Stand-alone power system General Energy Distributed generation rural electrification business remote island pumped-hydro storage feasibility |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Repositorio Abierto de la UdL Universitad de Lleida |
| Popis: | Hybrid renewable energy systems (HRES) have been widely identified as an efficient mechanism to generate electrical power based on renewable energy sources (RES). This kind of energy generation systems are based on the combination of one or more RES allowing to complement the weaknesses of one with strengths of another and, therefore, reducing installation costs with an optimized installation. To do so, optimization methodologies are a trendy mechanism because they allow attaining optimal solutions given a certain set of input parameters and variables. This work is focused on the optimal sizing of hybrid grid-connected photovoltaic-wind power systems from real hourly wind and solar irradiation data and electricity demand from a certain location. The proposed methodology is capable of finding the sizing that leads to a minimum life cycle cost of the system while matching the electricity supply with the local demand. In the present article, the methodology is tested by means of a case study in which the actual hourly electricity retail and market prices have been implemented to obtain realistic estimations of life cycle costs and benefits. A sensitivity analysis that allows detecting to which variables the system is more sensitive has also been performed. Results presented show that the model responds well to changes in the input parameters and variables while providing trustworthy sizing solutions. According to these results, a grid-connected HRES consisting of photovoltaic (PV) and wind power technologies would be economically profitable in the studied rural township in the Mediterranean climate region of central Catalonia (Spain), being the system paid off after 18 years of operation out of 25 years of system lifetime. Although the annual costs of the system are notably lower compared with the cost of electricity purchase, which is the current alternative, a significant upfront investment of over $10 M - roughly two thirds of total system lifetime cost - would be required to install such system. (C) 2015 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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