INVESTIGATION OF THE INFLUENCE OF THE PARAMETERS OF THE WIND FLOW ON THE CHOICE OF THE CHARACTERISTICS OF THE AUTONOMOUS WIND TURBINE

• Main Authors: Gonsharenko, Yu., Sokolovskyi, О., Paliichuk, V., Klius, S., Omarov, I.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2022
• Subjects: wind turbine; electric energy; wind flow; autonomous electric supply; вітроенергетична установка; електроенергія; вітровий потік; автономна система електропостачання
• Online Access: https://ve.org.ua/index.php/journal/article/view/340

Due to ecological advantages wind technologies and their wide application is one perspective modern direction of power generation. The paper presents the results of theoretical and practical investigations about the influence of the wind flow parameters in the Polissya region on the choice of the characteristics of the autonomous electric supply based on the wind turbine. In particular, the analytical dependencies are deduced for definition of: the power of the wind flow, the coefficient of the wind energy utilization, the produced electric power of the wind turbine and the yearly operation time of the installation. The practical investigations are shown in graphical dependencies of the coefficient of the wind energy utilization from the speed of the turbine rotor and dependencies of the wind turbine power capacity and the wind-to-rotor efficiency from the wind speed. Also, according to the mean wind speed distribution over the months nomogram (years 2011 to 2021) and according to the monthly part of the wind suitable for wind energy, the choice of the low power wind turbine is substantiated. Using the method of statistical distribution, namely the Rayleigh distribution, normal distribution, by the mean value (wind speed) and the empirical distribution function the wind speed probability density. It is defined that use of the Rayleigh distribution makes possible to raise the calculation precision by 18.8 % and 36 % compared to normal distribution and to the mean wind speed value accordingly. As a 100 % the value calculated from empirical data was accepted. During the calculations there were errors because of unevenness of power consumption and the pulsing nature of power delivery. To avoid those errors, in future, it is recommended to use mathematical and computer modeling. The received calculation of the parameters of the system`s elements of the autonomous power supply based on the wind turbine adapted to the characteristics of the Polissya wind flow, evidence the possibility of providing the reliable and uninterrupted power supply in this region.