Wind energy resource assessment method and device based on separation vortex turbulence model and storage medium

Abstract

The invention discloses a wind energy resource evaluation method and device based on a separation vortex turbulence model and a storage medium, and belongs to the technical field of new energy power generation. The method comprises the following steps: firstly, performing data processing on a wind speed sequence of a specific point location in a wind power plant to obtain a probability corresponding to each wind speed section of each wind direction sector at a specified height, then performing epitaxial expansion on an actually measured topographic map of a wind power plant site area, performing grid division after obtaining an epitaxial topographic map to generate a structured grid or a non-structured grid, and taking the structured grid or the non-structured grid as input information; the wind speed measured by the anemometer tower and a wind shear index fit wind profile are used as an inlet boundary condition, numerical simulation is carried out in wind direction sectors by adopting a separation vortex method, and the wind speed of each wind direction sector is calculated by utilizing the obtained probability corresponding to each wind speed section of each wind direction sector and the wind speed acceleration ratio of each wind direction sector. And calculating the wind speed of the whole wind power plant site area, the corresponding probability and the wind energy resource distribution condition of the wind power plant site area. The method can achieve the high-precision evaluation of the wind energy resources of the complex mountain wind power plant under the condition that the calculation amount is controllable.

Description

technical field [0001] The invention belongs to the technical field of new energy power generation, and in particular relates to a wind energy resource evaluation method, device and storage medium based on a separation eddy turbulence model. Background technique [0002] With the emission reduction targets of "carbon peaking and carbon neutrality" proposed by various countries in recent years, the world's energy and power system will undergo profound changes, and the energy consumption system based on fossil energy will gradually be replaced by clean and low-carbon renewable energy. Renewable energy changes. As far as power generation is concerned, low-cost coal has always played a dominant role in energy. Although after several rounds of environmental protection renovations, coal power pollution has been greatly reduced, but after the "dual carbon" goal was set, coal power has dominated the power system. The position will be gradually replaced by renewable energy, of which...

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Problems solved by technology

MeteoDyn WT uses a one-equation RANS model to solve the flow equation, and WindSim software uses a two-equation RANS model to solve the flow equation. Both mainstream commercial software use the steady method for calculation, which can achieve a good simulation for relatively simple mountainous terrain, and for large terrain changes. There are large errors in the flow field simulation of complex mountainous wind farms

Judging from the currently available computing resources, it is not realistic to promote the large eddy simulation method and the direct numerical simulation method on a large scale

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