Wind power plant modeling method based on equivalent roughness, medium and equipment

Abstract

The invention also discloses a wind power plant modeling method based on equivalent roughness, a medium and equipment. The method comprises the following steps: establishing a three-dimensional calculation model according to a target wind power plant; placing a wind turbine model at the air inlet of the three-dimensional calculation model to obtain a model with a fan, and solving the model with the fan to obtain the total momentum of the boundary of the air outlet of the model with the fan; deleting the wind turbine model in the model with the wind turbine to obtain a model without the wind turbine is obtained, setting different surface roughness for the model without the wind turbine until the total momentum of the air outlet boundary of the model without the wind turbine is consistent with the total momentum of the air outlet boundary of the model with the wind turbine, at this time, the current surface roughness of the model without the wind turbine being equivalent roughness; and establishing a whole wind power plant model according to the target wind power plant, establishing a circular area at each fan position of the whole wind power plant model, setting the surface roughness of the wind power plant in the circular area as equivalent roughness, and completing modeling of the whole wind power plant. According to the method, the design precision of the wind power plant is improved, and good economical efficiency is achieved.

Description

technical field [0001] The invention belongs to the technical field of renewable power generation, in particular to a modeling method, medium and equipment for wind farms based on equivalent roughness. Background technique [0002] At present, in the CFD simulation of wind farms, a large amount of hardware resources and time costs are required for simulation. It is often difficult to carry out detailed CFD simulation in engineering design. However, the simulation using professional software for the wind power industry is somewhat rough. [0003] Among them, the modeling of wind farms is mainly because the handling of fans in wind farms is relatively difficult, and the modeling methods generally use methods such as actual model modeling, actuating discs, and actuating lines. Modeling based on the actual geometry of the wind turbine is more precise, but it increases the modeling workload, greatly increases the requirements for the simulation computing hardware, and deteriora...

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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a wind farm modeling method, medium and equipment based on equivalent roughness, which solves the problem that the current wind farm modeling is difficult to balance simplified modeling, speed up the convergence speed and the amount of calculation

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