The invention discloses an overall active power prediction method for a regional
wind power plant, and the method comprises a flow field numerical model and comprises the following steps: S1, grid division, S2, boundary condition setting, S3, solving parameter setting, S4, calculation by an SSTk-
omega turbulence model, and adoption of an SIMPLEC
algorithm as a pressure and speed
coupling algorithmand S5, analysis of numerical
simulation results. Prediction performance of each
wind power plant in the region is considered, ICEM
software is utilized in the CFD
simulation calculation
system to generate the structured grid by creating the Block, and by means of the
advantage of good
geometric simulation adaptability of the structured grid, unstructured grid division is carried out on the complex geometric model. The power prediction value of the
wind power plant with poor prediction performance is calculated according to the change trend of the wind power plant with excellent prediction performance through a certain weight, an SSTk-
omega turbulence model is adopted for solving and calculating, the SIMPLEC
algorithm is adopted as the pressure and speed
coupling algorithm, and the method can improve the overall generated power prediction accuracy of the regional wind power plant.