A method and application of wind turbine position control and synchronous debugging

Abstract

The invention relates to a method and application of position control and synchronous debugging of wind turbines. The position control process of fan blades is divided into four stages: pitch change stroke, deceleration stroke, difference elimination stroke and stop stroke. Each speed command has its own planning method, and the proportional control used in the prior art solution is mainly applied in the differential stroke proposed by the present invention. In terms of synchronous debugging of the position of the fan blades, the existing technical solutions only have the proportional coefficient k available for adjustment, and it is often impossible to make a good trade-off between the control performance and the synchronization performance during the blade pitching process. And the technical scheme that the present invention proposes, these 3 parameters of the deceleration acceleration a of each blade, the position loop stroke S " of the third stage and the position proportional coefficient k of the third stage are available for debugging. Can significantly improve the blade position control performance At the same time, the real-time synchronization between the blade positions is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and application for position control and synchronous debugging of a wind turbine. Background technique [0002] Generally, the main control system of a wind turbine will determine the pitch angles of its three blades according to the power limit requirements of the wind farm energy management system and the current real-time wind conditions. The pitch angle reaches the specified position to achieve the purpose of adjusting the power output of the entire wind turbine. Up to now, the pitch control of most wind turbines is still symmetrical, that is, the target positions (pitch angles) of the three blades planned by the main control system should be exactly the same under any circumstances, and the pitch angle controlled by the pitch system at any time should be exactly the same. The actual position (pitch angle) of the three driven blades should be basically...

AI Technical Summary

Problems solved by technology

[0009] In the synchronous debugging process of the blade position of the existing technical solution, only the proportional coefficient k is available for adjustment. In the process of controlling the blade from the current position to the designated position, it is difficult to ensure fast, stable and accurate control performance requirements in some cases. It also takes into account the real-time synchronization with other blade positions

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