Method for judging influence of sudden change of wind direction of strong wind on fan

Abstract

The invention is suitable for the technical field of wind resource evaluation, and provides a method for judging the influence of wind direction mutation of strong wind on a fan, which comprises the following steps of: S1, measuring the wind of a wind power plant or a proposed wind power plant to obtain wind speed and wind direction data; s2, checking the wind speed and wind direction data, and removing invalid data in the wind speed and wind direction data to obtain effective wind speed and wind direction data; s3, defining a gale wind direction mutation index; s4, calculating the gale wind direction mutation index according to the definition of the gale wind direction mutation index and the effective wind speed and direction data; and S5, judging the influence of the sudden change of the wind direction on the fan according to the sudden change index of the wind direction of the strong wind. According to the method, the wind direction sudden change occurrence frequency of a certain area is determined by calculating the wind direction sudden change index, and the influence degree of the wind direction sudden change of the wind is evaluated. The method provides a basis for fan wind resistance parameter design, wind power plant early-stage planning, fan model selection, wind power plant fan operation maintenance and other work, and effectively reduces the fan damage risk.

Description

technical field [0001] The invention belongs to the technical field of wind resource assessment, and in particular relates to a method for judging the influence of a sudden change of strong wind direction on a wind turbine. Background technique [0002] In recent years, research on new clean energy has become a hot topic in the global energy field, and wind energy is both clean energy and renewable energy. Among them, wind power generation technology using wind energy as raw material is an important development area. [0003] The long-term stable and efficient performance of wind farm fans is an important factor for the good operation of wind farms. In addition to the performance degradation of the fan itself caused by the fatigue operation of the fan itself, meteorological disasters are the main factors affecting the performance and life of the fan. With the gradual development of wind power technology, the anti-disaster performance of wind turbines is also constantly imp...

AI Technical Summary

Problems solved by technology

If the wind turbine is often intruded by sudden changes in wind direction like this, fatigue loss will be caused, and the performance will gradually decline. In severe cases, the wind turbine may have accidents such as the whole machine toppling over, the main shaft broken, the gearbox damaged, the blade broken, etc., and eventually it may not be able to operate normally. Early end of service period

[0005] In addition, with the gradual development of the wind power industry, more and more wind farms have been built in mountainous areas with complex terrain. The ground effect caused by certain terrain changes, such as the top of the mountain and the pass where the wind speed is relatively high, the airflow accelerated At the same time, the wind direction may also change abruptly, which affects the safety of wind turbine operation

Images