Method for analyzing and quantitatively estimating influence of wind farm on weather radar based rainfall

Abstract

The invention provides a method for analyzing and quantitatively estimating influence of a wind farm on weather radar based rainfall. The method comprises the following steps: the relative distance between the wind farm and the radar is calculated on the basis of longitude and latitude position information of the radar and the wind farm and compared with a line-of-sight distance of the radar; echo signal intensity of wind turbines is calculated and compared with sensitivity of a radar receiver; the irradiation range of radar beams is calculated by means of terrain height of an area where the wind farm and the radar are located and in combination with parameters such as radar elevation, beam width and the like; the length of the wind turbine in the radar irradiation range is calculated, RCS of the wind turbine is calculated with an analytical model based on a physical optics method, and then radar reflectivity is obtained; influence of a wind turbine model and a wind turbine distribution mode on the radar reflectivity is analyzed; the rainfall of the wind farm area is calculated according to the relation between the radar reflectivity and the rainfall. The method is completed with the analytical model based on the physical optics method and has the advantages of high calculation speed, relatively simple processing steps and the like.

Description

technical field [0001] The invention belongs to the technical field of impact evaluation of wind farms on meteorological radars, in particular to an analysis and quantitative evaluation method of wind farms' influence on meteorological radar rainfall. Background technique [0002] In recent years, the demand for clean and renewable resources in countries around the world is increasing, and wind energy, as an important renewable resource, has also developed rapidly. Over the past ten years, the cumulative installed capacity of wind power in the world has been growing exponentially. Due to the development of the wind power industry, more and more wind farms (referred to as wind farms) have been built one after another, and at the same time, the scale of the wind farms and the structure of the wind turbines are also increasing. However, recent studies have shown that wind turbines, as the main body of wind farms, will have a serious impact on electronic equipment such as civil...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that it requires a large amount of measured data support, and it is impossible to evaluate the potential impact of the wind farm before the wind farm is established. Therefore, it is necessary to develop a method that can quickly and accurately evaluate the impact of the wind farm on the weather radar. of

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