- #Mathematical equations homer energy results software#
- #Mathematical equations homer energy results free#
An increase in the capacity factor can be obtained with the joint operation with reversible hydro power plants, but this option is not always possible. The capacity factor of wind farms shows how this variability impacts the operation of the plants and its value is of the order of 30% to 35%. The temporal and spatial variability of the winds represent an obstacle to be overcome so that wind energy can be increasingly used. With an area of only 3.32% of the Brazilian territory, it has a wind potential equivalent to 15% of the estimated potential for Brazil for areas with speeds greater than 7 m/s or greater and heights of 50 m. In Rio Grande do Sul, the southern state of Brazil, the estimated wind power potential onshore is 15.8 GW, 54.4 GW and 115.2 GW for areas with wind speed equal or greater than 7 m/s, at the heights of respectively 50 m, 75 m and 100 m. The total contribution to the Brazilian system has already reached about 1.69% of the total installed power. In Brazil, the production of electricity from wind power exceeded 2700 GWh in 2011, which represented an increase of 24.3% over the previous year.
#Mathematical equations homer energy results free#
Currently, there are several wind farms in the world with large dimensions, providing several hundred MW.īrazil is experiencing a moment of intense excitement in the wind energy sector, with the auction of new areas for generation and free competition among stakeholders. In recent years, there is also an intense development in the techniques available for locating turbines in an area where the wind potential is harnessed. Over time, the technology of synchronous machines evolved considerably, enabling the provision of high quality electricity. In the past, asynchronous electric machines seemed to be the best alternative for the conversion of wind energy. However, not only that: it can reduce significantly the emission of greenhouse gases, helping different nations to accomplish protocols that determine the cut of GHG emissions. Wind diesel hybrid systems can be a good solution for remote communities (isles or regions isolated by the harsh weather conditions), diminishing the dependence of fossil fuels and the necessity of paying high costs for the purchase of annual supplies of diesel fuels. While a completely renewable energy matrix may be hard to achieve in several nations, hybrid systems are another matter altogether. In several systems, it can represent up to 30% of the energy available, including exploration of the potential overseas. In several countries where no left energy resources are available in significant amounts, the wind energy has been widely explored. All wind turbines installed by the end of 2012 worldwide can provide 580 TWh a year, more than 3% of the global electricity demand. The worldwide wind power capacity exceeded 280 GW in 2012, with an increase of 12% over the previous year. Wind power is recognized as a reliable and affordable source of electricity and has become an important component of the energy systems in many countries. The concern for reducing emissions of greenhouse gases has led the world to develop of new energy sources. Received 6 June 2016 accepted 1 August 2016 published 4 August 2016 The results indicate a relatively small influence (as expected) in the studied system, which appears particularly when the cost of diesel is higher and the availability of wind is lower.
#Mathematical equations homer energy results software#
This paper studies the subtle influence of Weibull shape parameter on the optimal combination of components in a wind diesel hybrid system, by means of computer simulations with the well known software Homer. This parameter is much higher as higher is the variability of the wind speed. The availability of wind is best described by the Weibull probability distribution, which has as one of its defining parameters one which is termed as shape parameter. The variability of the wind speed is influenced if the point of interest is on land or on sea, the shape of the surface, the proximity of water bodies, among other factors. Wind power is an increasingly important alternative for obtaining energy supplies, both in large interconnected power systems and in smaller hybrid systems and even in backup systems.
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