Substantiation of the development of approaches to calculation of wind power plants

Abstract

In recent years, wind energy is one of the promising solutions to the problem of providing quality electricity to agro-industrial complex. However, for the effective use of wind power plants it is necessary to accurately determine the modes of operation of wind turbines. The analysis of known approaches to the calculation of wind power plants has shown that the main parameters characterizing the operating modes of wind turbines include the initial (starting) wind speed, nominal wind speed and maximum wind speed. At the same time, the rotation of the wind wheel is carried out due to the impact of wind with a certain power on it. Studies show that an extended group of microclimatic factors, including wind speed, atmospheric pressure, temperature and relative humidity, together have a significant effect on the specific power of the wind flow. Thus, the current approaches to the calculation of wind power plants do not allow a sufficiently accurate assessment of the impact of wind on wind wheels, resulting in a decrease in the accuracy of determining the operating modes of the wind generator. This paper discusses the problem of improving the accuracy of determining the operating modes of wind power plants. It is proposed to use the following values as parameters characterizing the operation modes of a wind generator: starting, nominal and maximum specific power of wind flow. Using the example of the City of Slavgorod of the Altai Region, the estimation of accuracy of determination of wind generator operation modes is discussed. The comparative evaluation showed that at the constant value of wind speed the specific power of wind flow may significantly differ; that proved the expediency of using the specific power of wind flow as indicators that characterized the operating modes of wind power plants.