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Splicing and fusion method for numerical simulation calculation results of flow field partitions of wind power plant

A technology for numerical simulation and calculation results, applied in calculation, design optimization/simulation, electrical digital data processing, etc., can solve problems such as confusion of speedup ratio and inability to obtain calculation results, and achieve reduction in size, acceleration of calculation and convergence speed, and convenience Effects of wind resource assessment

Active Publication Date: 2021-07-09
华能陇东能源有限责任公司 +1
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Problems solved by technology

However, since each sub-model uses independent boundary conditions when performing CFD calculations, directly merging the calculation results of the sub-models in the same sector will cause confusion in the acceleration ratio in the entire field of large terrain, and cannot be obtained Accurate calculation results, so there is an urgent need for a method that can splice and fuse sub-model calculation results

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  • Splicing and fusion method for numerical simulation calculation results of flow field partitions of wind power plant
  • Splicing and fusion method for numerical simulation calculation results of flow field partitions of wind power plant
  • Splicing and fusion method for numerical simulation calculation results of flow field partitions of wind power plant

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Embodiment Construction

[0021] The present invention is described in further detail below:

[0022] A splicing and fusion method for numerical simulation calculation results of flow field partitions in wind farms. According to the relative positional relationship of all sub-models in the whole wind farm, the model splicing and fusion benchmark and splicing and fusion order are determined, and the overlapping area grid point values ​​of adjacent sub-models are used to Perform statistical analysis to find the correlation, then calibrate all the grid point values ​​of the sub-models according to the correlation, and calibrate the grid point values ​​of all sub-models in a specific order and merge the sub-models, involving the overlapping areas Spatial grid points are divided according to the rules of the middle line of the overlapping area. During the merging process of the sub-models, the values ​​of the spatial points outside the middle line of the overlapping area are discarded.

[0023] The working ...

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Abstract

The invention discloses a splicing and fusion method for numerical simulation calculation results of flow field partitions of a wind power plant, which is used for solving the problem of splicing and fusion of sub-model flow field simulation results after segmentation calculation of a large terrain during CFD (computational fluid dynamics) simulation calculation of a flow field of a large-scale wind power plant. The method comprises the following steps of: firstly, performing interpolation calculation on grid points in an overlapping region by utilizing a calculation result of the overlapping region of adjacent sub-models, then searching an incidence relation for calculation values of different sub-models through a statistical method based on the same grid coordinate points, determining a linear relation by utilizing a least square method, and then, correcting sub-model grid point values needing to be spliced and fused by utilizing a linear relation, and finally, merging corrected sub-model results to form a complete CFD simulation model calculation result of the whole wind power plant.

Description

technical field [0001] The invention belongs to the technical field of wind farm flow field simulation calculation technology, and in particular relates to a splicing and fusion method for numerical simulation calculation results of wind farm flow field divisions. Background technique [0002] With the advent of the era of wind power parity, it is an important way to increase the income of wind power development through large-scale development to reduce development costs and increase power generation. , can effectively reduce the development cost. The development of base-scale wind farms is different from conventional wind power projects. The boundary range of wind farms that require wind resource assessment has increased from 20 to 30 kilometers to hundreds of kilometers, and the area has expanded by dozens of times. Therefore, for the wind resource assessment of large-scale base-type wind farms, the conventional wind farm flow field simulation calculation method is no lon...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F111/10G06F113/06
CPCG06F30/28G06F2113/06G06F2111/10
Inventor 陈新明吴有兵叶昭良王建峰张波闫永昌郭雨桐闫姝蔡鹏飞刘鑫梁盛钟迪
Owner 华能陇东能源有限责任公司
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