Wind driven generator output evaluation method considering turbulence intensity

Abstract

The invention discloses a wind driven generator output evaluation method considering turbulence intensity. The method includes the following steps that: model parameters and aerodynamic parameters of a wind driven generator to be evaluated are obtained, and then, the wind power hook surface of the wind driven generator relative to the variation of a wheel hub average wind velocity and a turbulence reference value can be determined according to the model parameters and aerodynamic parameters; a wind velocity sequence to perform wind driven generator output evaluation is segmented according to segmentation periods T, the turbulence reference value and the wheel hub average wind velocity of each segment of wind velocity sequence; and finally, the output of the wind driven generator at each segmentation period is determined according to the wind power hook surface, and the output of the wind driven generator in a total time segment is obtained, so that the total output of the wind driven generator can be obtained. The method of the invention is applicable to output evaluation of wind driven generators according to the models of the wind driven generators, so that planning of wind power plants, annual energy output prediction of the wind power plants, and the like can be performed. With the method adopted, evaluation errors caused by a situation in which only average wind velocity is considered can be avoided, and the accuracy of wind driven generator output evaluation can be greatly improved.

Description

technical field [0001] The invention belongs to the field of wind power generator output evaluation, in particular to a wind power generator output evaluation method considering turbulence intensity. Background technique [0002] With the rapid development of the global industrial level, the reserves of non-renewable energy sources such as petroleum have been drastically reduced, while the demand for energy in human society is increasing day by day. When human beings try to find new energy sources such as wind energy to replace traditional energy sources, the increasingly prominent environmental problems have once again accelerated the speed of energy structure transformation. Wind energy and other new energy sources jointly provide new ideas for solving energy crisis and environmental problems. The main advantage of wind power is that the construction cycle of wind farms is relatively short, and the area occupied by wind turbines is relatively small, which basically does n...

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