A method and device for evaluating wind resources in complex terrain

Abstract

The invention provides a method and apparatus for evaluating wind resources of complex terrain,, wherein the method comprises the following steps: extracting representative weather features from historical anemometer tower observation data based on a target region; Constructing a first simulation scheme combination; carrying out Sensitivity analysis of physical process based on the combination ofrepresentative weather features and the first simulation scheme, and obtaining the sensitive physical optimization scheme; constructing a second simulation scheme combination according to the sensitive physical optimization scheme, and obtaining an optimization parameter scheme combination according to the objective function. The method provided by the present invention the sensitive physical optimization scheme corresponding to the target region is selected by the sensitivity analysis method, Then the optimal parameter combinations suitable for the target area are selected by using the optimization method, so as to improve the simulation ability of wind resources, reduce the uncertainty of wind resource evaluation, and at the same time, it is of great help to improve the accuracy of windpower forecasting.

Description

technical field [0001] The invention relates to the technical field of wind resource assessment, and more specifically, relates to a wind resource assessment method and device for complex terrain. Background technique [0002] With the rapid development of the wind power industry, more and more projects are being constructed in the complex mountainous areas of the south. The complex mountainous areas in the south bring great challenges to the assessment of wind resources. There are two main sources of uncertainty in complex terrain wind resources: one is that the high humidity in the south and the high altitude of complex terrain lead to serious icing of wind measuring instruments, which makes the completeness rate of wind measurement low; The simulation capability of mountains is limited, especially under the conditions of large terrain and complex weather processes such as the leeward area and the acceleration effect of the gorge. Therefore, the assessment of wind resour...

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Problems solved by technology

Because the effect of model prediction and the adaptability of parameterization schemes are very important, many current parameterization schemes are not capable of describing small and medium-scale systems, so it is of great significance to find parametric schemes suitable for local characteristics

[0004] At present, when using the WRF model to model the wind resource status of the project, due to limited computing resources, the combination of parametric schemes used is mainly a single scheme based on experience or references, and there is little assessment of the adaptability of the parametric schemes to the region

However, my country has a vast territory, and the terrain and meteorological conditions in different regions vary greatly. The applicability of parameterization schemes in different regions is obviously different. Using a single scheme cannot obtain the best simulation results for the target area, resulting in inaccurate evaluation and prediction results.

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