PID control method and device, computer equipment

Abstract

The invention discloses a PID control method and device, and computer equipment. The PID control method includes: obtaining the measured value of the target control variable of the wind turbine; calculating the deviation between the measured value of the target control variable and the target value of the corresponding target control variable; if the deviation is less than a preset threshold, lowering the target control The adjustment parameter of the PID controller of the variable, and according to the product of the output value of the PID controller of the target control variable and the corresponding correction coefficient, PID control is performed on the associated actuator of the target control variable, wherein the correction coefficient is greater than 1; The adjustment parameters include: Proportional adjustment parameters, integral adjustment parameters and / or derivative adjustment parameters. By adopting the technical solutions of the embodiments of the present invention, the PID control of the wind power generating set can be optimized on the premise of not needing to adjust the PID parameters, and the purpose of the PID control can be accurately realized.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a PID control method and device, and computer equipment. Background technique [0002] PID control is the most commonly used control method. The two core controls in wind turbines are torque control and pitch angle control, both of which use PID control. Considering that the difference of the controlled object model (such as inconsistent blade length, inconsistent blade aerodynamic performance, and different feathering speed) will affect the performance of PID parameters, it is necessary to tune the PID parameters, that is, reset the adjustment parameters in the PID controller. . [0003] At present, the tuning method for PID parameters is mainly manual tuning, which requires engineers to achieve by trial and error with experience and skills. [0004] However, in the case of wind turbines, manual tuning must be shut down and engineering personnel into the hub to ...

AI Technical Summary

Problems solved by technology

[0004] However, for wind turbines, manual tuning must be shut down and engineers enter the hub to perform tuning

On the one hand, shutting down will cause a certain loss of power generation; on the other hand, after the parameter setting is completed, it is necessary to update the program or parameters of all wind turbines in the wind farm, which is time-consuming and laborious; and when the wind turbine equipment, such as blades, are replaced , it is necessary to repeat the above process

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