Terrain reformation method of complex-terrain wind farm

Abstract

The invention discloses a terrain reformation method of a complex-terrain wind farm. The method includes: realizing terrain modeling, and performing meshing of a calculation basin model; setting boundary conditions of a calculation basin; and solving the calculation basin model in a solver according to the boundary conditions set in the solver. According to the method, reasonable terrain reformation height can be determined, the turbulence level of a preselected position is reduced within the usage requirement of a fan, the earthwork excavation cost is greatly reduced, the lowest engineering cost is guaranteed, a certain guiding significance is provided for microscopic location selection of local terrains of the complex-terrain wind farms, the method is applicable to the flow field analysis and scheme economy analysis in microscopic location selection of the wind farms, and the application prospect in engineering is good.

Description

technical field [0001] The invention belongs to the technical field of wind farm transformation, and in particular relates to a terrain transformation method for wind farms with complex terrain. Background technique [0002] Wind power is a renewable and clean energy that can alleviate the energy crisis and improve environmental conditions to a certain extent. In recent years, my country's wind power has developed rapidly. According to statistics from the Wind Energy Professional Committee of the China Renewable Energy Society, in 2014, 13,121 new wind turbines were newly installed nationwide, with a new installed capacity of 23,196MW. Power generation technology has been a research hotspot in related fields. With the continuous development of wind resources, in the micro-site selection of wind farms, the prediction of wind resources is no longer limited to flat terrain. Offshore wind farms, inland complex terrain and low wind speed wind farms are the main directions for fut...

AI Technical Summary

Problems solved by technology

[0003] In complex terrain, due to the influence of mountains or valleys, there are often large deviations in wind resource estimation. After the wind farm is completed, these machine positions will also be affected by the wake of adjacent wind turbines in the wind farm. Their power generation will generally be It is lower than the design estimated value, and what is more serious is that the turbulence at these machine positions may be too large, which is unbearable for the fan, which will lead to serious mechanical wear of the fan, high failure rate of the gearbox, and reduce the service life of the wind turbine

At present, there is still no good solution to the turbulence problem in complex terrain

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