The main purpose of the thesis is to assess the variability of the technical parameters of wind power plants regarding the amount of electricity produced by selected wind power plants at a specific location. With the help of archival measurements of wind speed at this location and based on estimates of the technical parameters of individual wind power plants, the aim is to draw a power curve for certain periods. The selected location was the analyzed wind power plant on Nanos: Leawind 8 MW, Enercon E-44
power 900 KW and Aereonautica Windpower 47-750 power 750 KW.
The purpose of the diploma thesis is also to discuss the topic of wind, wind farms, and the use of wind energy on a global level. By 2050, the European Union has set itself the goal of becoming the first climate-neutral continent by concluding a green agreement. Energy production and consumption account for more than 75 \% of greenhouse gas emissions in the EU. Decarbonization of the EU's energy system is therefore crucial. Wind energy is therefore expected to represent half of the total energy produced in the EU by 2050 and will have to decrease from today's 220 GW to 1300 GW.
In the first part, climate change and wind energy in the world are presented. The following is the history of wind farms. Local and global wind properties are shown. The second part explains the basic laws of wind energy and the characteristics of wind power plants, such as the types of windmills and their components.
The analysis of the variability of the power of wind farms for different periods in 2019, 2020, and 2021 showed that the Leawind wind farm had the highest power factors regardless of the considered period. Among the three years, 2020 had the highest wind speeds, and 2021 had the lowest. The best wind conditions mostly occurred in November, and the worst in June.
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