Method and device for controlling yaw unwinding of wind power generating set

Abstract

Embodiments of the present invention provide a method and device for controlling yaw untwisting of a wind power generating set, wherein the method includes: determining whether there is a target fault in the wind power generating Resetting self-resetting faults and / or non-self-resetting faults whose time length is greater than or equal to a preset time length; if the target fault exists in the wind power generating set, untwisting control is performed. The yaw untwisting control method and device of the wind power generating set provided by the embodiments of the present invention can reduce the impact on the power generation of the wind generating set due to the long untwisting time after cable twisting.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wind power generation, and in particular to a method and device for controlling yaw and uncable of a wind power generating set. Background technique [0002] Wind power is the conversion of wind kinetic energy into electrical energy, and wind turbines are devices that convert wind energy into electrical energy. [0003] Since the wind direction changes all the time, in order to achieve maximum power tracking, the wind turbine needs to keep the nacelle facing the wind direction all the time during operation so that the impellers can obtain maximum lift. In the prior art, the tracking of the wind direction by the wind turbine is realized through the yaw control device, and the specific process is as follows: [0004] The yaw control device obtains the angle between the current wind direction and the axial direction of the impeller by collecting the data of the wind vane. When the angl...

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Problems solved by technology

However, because the yaw speed of the wind turbine is relatively slow, generally 1.5 degrees / second, and in order to reduce the vibration during yaw, some yaw speeds are set to 1 degree / second, so untwisting often takes a long time ; That is to say, in the untwisting process, the power generation of the wind turbine will be greatly lost, especially as the blades of the current wind turbine are getting bigger and bigger, and the wind speed at which the rated power is reached is getting lower and lower. The wind turbine can reach the rated power value at a wind speed of 10 m / s. In this case, the wind turbine will lose more power during the untwisting process.

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