Method for obtaining wind speed and direction of wind turbine and wind turbine system

Abstract

The invention discloses a method for obtaining wind speed and wind direction of a wind turbine generator and a wind turbine generator system. The method comprises a step 1) of establishing a wind speed and wind direction database; constructing wind speed and wind direction relations between each wind turbine generator and the adjacent wind turbine generators respectively in real time according to an established wind speed and wind direction database, and obtaining adjacent fan wind speed and wind direction relation sets; a step 2) of obtaining an adjacent fan wind speed and wind direction relation corresponding to a target wind turbine generator when an anemoclinograph of the target wind turbine generator has a failure, and obtaining the wind speed and wind direction of the target wind turbine generator according to the current wind speed and wind direction of the adjacent wind turbine generator. The wind turbine generator system comprises a plurality of wind turbine generators, each wind turbine generator is provided with an anemoclinograph and further comprises a wind speed and wind direction obtaining device, and the wind speed and wind direction obtaining device comprises an adjacent wind speed and wind direction relation establishing module and an obtaining module which are connected with each other. The method for obtaining wind speed and wind direction of the wind turbine generator and the wind turbine generator system have the advantages that the implementation method is simple, the required cost is low, the environmental adaptability is high, and the wind speed and wind direction obtaining precision and reliability are high.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method for obtaining wind speed and direction of a wind turbine and a wind turbine system. Background technique [0002] Wind turbines usually need to install wind speed and direction instruments to obtain wind speed and wind direction information. Since wind turbines operate at high altitudes, the anemometers need to be installed on the top of the nacelle, and there are usually no protective measures. In harsh environments such as rain, vibration, sand and dust, the probability of failure is high. Once the anemometer fails, the control logic of the current wind turbine is generally a failure shutdown, which reduces the availability and power generation of the wind turbine to a certain extent. [0003] In order to solve the above problems and improve the reliability of wind speed and direction signal acquisition, the method of installing two anemometers is usuall...

AI Technical Summary

Problems solved by technology

Patent application CN105134483A discloses a control method for normal operation of wind turbine anemometers after damage, which uses a fixed algorithm to calculate the relationship between the wind direction of the wind turbine and the adjacent wind turbine, and takes the maximum value of the wind speed of the adjacent wind turbine as the input of the wind speed of the wind turbine value, based on a fixed algorithm to calculate the relationship between the wind direction of the unit and the adjacent unit, although the reliability of the wind speed and direction signal can be improved to a certain extent, but the geographical location and conditions of each wind farm and unit are different, this method does not Applicable to other different wind field environments, its universal applicability is not strong

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