Wind generating set operation control method and device and storage medium

Abstract

The embodiment of the invention discloses a wind generating set operation control method and device and a storage medium. The method comprises the steps that the rotating speed of the wind generatingset is detected; if the rotating speed is smaller than the first preset rotating speed and lasts for a first preset duration, the wind generating set is controlled to enter a small-wind power generation state; the small wind power generation state is configured as follows: the target rotating speed of the variable pitch control system of the wind generating set is the rated rotating speed of the wind generating set, the minimum rotating speed of the torque control system of the wind generating set is reduced from the initial minimum rotating speed to a second preset rotating speed, and the second preset rotating speed is out of the rotating speed range corresponding to the tower resonance frequency of the wind generating set; wherein the first preset rotating speed is smaller than the initial minimum rotating speed, and the second preset rotating speed is smaller than the first preset rotating speed. By adopting the technical scheme in the embodiment of the invention, the wind generating set can fully utilize the energy contained in the small wind, and the problem of frequent start and stop of the set caused by repeated fluctuation of the wind speed is avoided.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, and in particular, to a method and device for controlling the operation of a wind power generator set, and a storage medium. Background technique [0002] figure 1 It is a schematic flow chart of the original operation control method of the wind turbine. [0003] like figure 1 As shown, the original operation process of the wind turbine is: the cycle of standby state-starting state-accelerating state-generating state-stopping state. Wherein, the standby state is configured as: the wind turbine is at rest, and the pitch angle is around 90 degrees. The start-up state is configured as: performing a propeller-opening operation on the wind turbine, and the pitch angle is changed from 90 degrees to 0 degrees. The acceleration state is configured to increase the rotational speed of the wind turbine until the grid-connected rotational speed is reached. The power generation stat...

AI Technical Summary

Problems solved by technology

In view of this situation, the strategy of wind turbines in the prior art is to stop directly, but direct shutdown will not only waste the energy contained in the small wind, but also easily lead to frequent start and stop of the unit when the wind speed fluctuates repeatedly, causing the wind turbine to consume more energy. Power increases while lifetime decreases

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