Abstract
The wind energy is one of the most important alternatives for renewable and clean electricity generation. During the last decade the number of wind farms has largely increased in South America. Qollpana is only one case of an on-shore wind farm but it is located at 2900 m above sea level over a complex terrain. Due to high altitude, the air density is reduced by 27% compared with sea level and the topographic characteristics induce a high level of turbulence. Qollpana wind farm has ten wind turbines reaching 27 MW of installed capacity. October is the month of highest wind average velocity and February with the lowest one. This work analyses the capacity factor of the wind farm, also the air density and the turbulence effects on wind turbine efficiency. The main results show that monthly capacity factor varies between 0.08 and 0.67 in the wind farm. Moreover, the results have shown a considerable effect of the turbulence intensity on the turbines efficiency.
Highlights
The current transition from fossil fuel energy systems towards low-carbon energy systems to keep the global warming below 2 °C, that has been agreed in Paris [1], invokes the countries, industry and society, altogether, to take actions to reduce the CO2 emissions and efficient use of energy [2,3,4].In this context, one of the most important alternatives of electrical energy generation, renewal, environment friendly, and non-carbon energy system, has been wind energy systems
The wind energy projects could be evaluated with different indicators, such as the capacity factor (CF) that practically measures the economic efficiency and represents the relation of the average power generated between rated peak power
MW wind turbines were working in the period January–July because in August began the operation of 3 MW wind turbines in the wind farm
Summary
The current transition from fossil fuel energy systems towards low-carbon energy systems to keep the global warming below 2 °C, that has been agreed in Paris [1], invokes the countries, industry and society, altogether, to take actions to reduce the CO2 emissions and efficient use of energy [2,3,4] In this context, one of the most important alternatives of electrical energy generation, renewal, environment friendly, and non-carbon energy system, has been wind energy systems. The wind energy projects could be evaluated with different indicators, such as the capacity factor (CF) that practically measures the economic efficiency and represents the relation of the average power generated between rated peak power. This work analyses the CF of the most important wind farm in Bolivia, taking into account the density and turbulence effects in the efficiency of the wind turbines
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