Performance evaluation method of wind turbine generator based on surrounding environment

Abstract

The invention relates to a performance evaluation method of a wind turbine generator based on a surrounding environment. The method comprises the following steps: (1) modeling an obstacle and a wind turbine generator; (2) sweeping the wind turbine generator along a position angle of a set interval by adopting wind with a rectangular section, and judging whether an obstacle influences the wind turbine generator or not; (3) eliminating the position angle without influence on the wind turbine generator to obtain a position angle with influence on the wind turbine generator; (4) constructing a fluid model of the affected position angle; (5) according to the fluid model, carrying out barrier simulation calculation on the wind turbine generator model; and (6) carrying out evaluation according tothe result of the barrier simulation calculation. The actual influence of the obstacles on the wind turbine generator is considered, so that the simulation result is more accurate, the evaluation result is more reliable, only the eliminated position angle with the influence is subjected to simulation analysis, and the efficiency of model simulation calculation can be improved.

Description

technical field [0001] The invention relates to a performance evaluation method of a wind turbine based on the surrounding environment. Background technique [0002] Wind turbines convert wind energy into rotational mechanical energy by means of wind wheels, and convert mechanical energy into electrical energy by means of generators, converters and other devices. Ideally, the wind speed is relatively stable and flows into the plane of the wind rotor, forming favorable torque and unfavorable thrust effect on the unit through the blades. However, due to unfavorable wind resource conditions such as turbulence intensity, wind direction change, wake effect, etc., the power generation performance of the unit will be reduced and the load capacity will be increased, which will put the unit components at risk. [0003] Wind turbines are generally built in mountainous and hilly areas with complex terrain. Generally, there will be steep slopes, cliffs, cliffs, or other large buildings...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for evaluating the performance of wind turbines based on the surrounding environment, so as to solve the problem of inaccurate performance evaluation of wind turbines

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