Optimal sizing of a hybrid grid-connected photovoltaic and wind power system

Abstract

Abstract-Hybrid renewable energy systems (HRES) have been widely identified as an efficient mechanism 6 to generate electrical power based on renewable energy sources (RES). This kind of energy generation 7 systems are based on the combination of one or more RES allowing to complement the weaknesses of one 8 with strengths of another and, therefore, reducing installation costs with an optimized installation. To do so, 9 optimization methodologies are a trendy mechanism because they allow attaining optimal solutions given a 10 certain set of input parameters and variables. This work is focused on the optimal sizing of hybrid grid-11 connected photovoltaic -wind power systems from real hourly wind and solar irradiation data and electricity 12 demand from a certain location. The proposed methodology is capable of finding the sizing that leads to a 13 minimum life cycle cost of the system while matching the electricity supply with the local demand. In the 14 present article, the methodology is tested by means of a case study in which the actual hourly electricity retail

Optimal Sizing of a Hybrid Grid-Connected Photovoltaic–Wind–Biomass Power System

“…The upfront investment required to install such a HRES is 7.3971 · 10 = $7.397 M. This figure is significantly lower, approximately 25% less than the one obtained in [24], with a PV-wind HRES backed up only with a grid. However, the NPV approximately doubles the one obtained in [24] due to fuel consumption costs, which are around $220,000-230,000 per year, and electricity purchasing costs, because, in this case, the system does not produce the same amount of electricity that is demanded on an annual basis.…”

“…However, the NPV approximately doubles the one obtained in [24] due to fuel consumption costs, which are around $220,000-230,000 per year, and electricity purchasing costs, because, in this case, the system does not produce the same amount of electricity that is demanded on an annual basis. The fuel consumption ranges from 1017 metric tons per year at year one to 1050 metric tons per year at year 25.…”

“…This work proposes an improvement to a grid-connected solar PV-wind HRES, which was proposed in a previous work of the authors [24]. This improvement consists on adding a certain degree of autonomy given by forest wood biomass, which is a controllable source of energy [2] since it can be stored in wood chip or pellet form, reducing storage requirements [25]; together with the reliability assurance mechanism of grid connection [19,24].…”

“…This improvement consists on adding a certain degree of autonomy given by forest wood biomass, which is a controllable source of energy [2] since it can be stored in wood chip or pellet form, reducing storage requirements [25]; together with the reliability assurance mechanism of grid connection [19,24]. In addition, these three sources of energy are recognized to be the RESs with higher social, economic, and environmental benefits [26].…”

Integrated renewable electricity generation considering uncertainties: The UK roadmap to 50% power generation from wind and solar energies

“…Several combinations of wind and solar energy systems were evaluated ranging from 100% solar to 100% wind and the criteria results were compared in order to find the optimal solution. González et al [21] investigated the optimal sizing of a photovoltaic and wind power system by minimizing the net present value. A nonrenewable energy case was compared to a case that includes renewable energy.…”