Optimization method for model selection of fan blade of wind power plant

Abstract

The invention relates to an optimization method for model selection of a fan blade of a wind power plant. The method comprises the following steps: 1) acquiring a unit capacity of the wind power plant and acquiring the model of the selectable wind turbine unit and the length of the corresponding wind turbine unit blade according to the capacity; 2) establishing a target function by taking the minimal cost per kilowatt / hour in the life cycle of the wind power plant as a target and the length of the discrete wind turbine unit blade as a constraint; and 3) solving the target function according to a genetic algorithm, thereby acquiring the optimal model combination of the wind turbine unit. Compared with the prior art, the method has the advantages that the wind speed distribution of the wind power plant, the wake effect between the wind direction distribution and the unit and the life cycle cost of the wind power plant are comprehensively considered, the cost per kilowatt / hour of the wind power plant can be reduced under the condition of same wind power plant capacity, and a basis is provided for the model selection of the fan blades of an onshore wind power plant and an offshore wind power plant.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a type selection optimization method for fan blades of a wind farm. Background technique [0002] With the rapid development of wind power technology, wind power has become the third largest power source after thermal power and hydropower. By 2020, my country's wind power installed capacity is expected to reach 200GW. The rapid development of wind power technology and the fierce competition of resources make the cost of electricity become one of the important indicators for the development of wind power industry. [0003] The cost per unit of electricity depends on the total cost and the amount of electricity generated. The power generation of a wind farm is determined by the amount of energy absorbed by the wind turbine from the wind. Among them, the blades of the fan are the key components for the fan to convert wind energy. Under the same capacity c...

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Problems solved by technology

However, the above studies are all carried out on the basis that the fans in the wind farm belong to the same model and the blade length is the same, and there are few studies on the selection and optimization of the blade length of the wind farm fan.

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