Wind turbine pid control method and device

Abstract

The present invention provides a PID control method and device for a wind power generating set. The method includes: if the real-time given position output by the PID controller is equal to the target position set by the PID controller, recording the preset value of the controlled system in the control cycle Adjust the real-time actual position of the object; if the real-time actual position of the preset adjustment object of the controlled system is equal to the target position, and the real-time output speed of the PID controller is greater than the preset threshold, then it is determined that the preset adjustment object of the controlled system is overshooting; According to the real-time actual position of the preset adjustment object in the preset quantity control cycle before the current moment and the preset PID formula, calculate the PID parameters after tuning. The parameters of the PID formula include the target position, the real-time actual position of the preset adjustment object and PID Parameters; perform PID control according to the adjusted PID parameters. The self-tuning of the PID parameters can be realized without generating an oscillation signal and affecting the normal power generation of the wind power generating set.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wind power generation, and in particular to a PID control method and device for a wind power generating set. Background technique [0002] In wind turbines, the two core controls are torque control and pitch angle control. In order to improve the accuracy of control and simplify the model, the most commonly used control method is PID control. The purpose of torque control is to make the wind turbine execute the most reasonable torque value according to the current speed value, so as to realize the maximum power tracking. The purpose of the pitch angle control is: when the wind speed is too high, by adjusting the pitch angle to change the angle of attack of the airflow on the blades, thereby changing the aerodynamic torque obtained by the wind turbine and keeping the power output stable. [0003] In torque control, if the torque value overshoots or the response time is slow, it will...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a PID control method and device for a wind power generating set, which solves the technical problem that none of the existing PID parameter tuning methods can perform online self-tuning, which affects the normal power generation of the wind power generating set

Images