A wind wheel surface dynamic thrust reduction method, device, equipment and storage medium

By monitoring and controlling the wind turbine's speed and pitch angle in real time, the thrust on the rotor surface is dynamically reduced, solving the problem of wind turbine shutdown under extreme gust conditions and extending the turbine's lifespan.

CN117948234BActive Publication Date: 2026-06-23THREE GORGES TIBET ENERGY INVESTMENT CO LTD +1
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Patent Information

Application Number
CN202410147010.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-01-31
Publication Date
2026-06-23
Estimated Expiration
2044-01-31

AI Technical Summary

Technical Problem

Wind turbines cannot reduce their speed in time under extreme gusts of wind, leading to turbine shutdown, increased load on the hub and tower base, and reduced turbine lifespan.

Method used

By monitoring the generator speed, tower acceleration, yaw angle, and pitch angle of the wind turbine in real time, NP and GP speed control are performed. Combined with Butterworth filter for judgment and pitch angle update, the thrust of the wind turbine surface is dynamically reduced.

Benefits of technology

It effectively solves the problem that wind turbines cannot reduce their speed in time under extreme gust conditions, avoids unit shutdown, reduces hub and tower base load, and extends unit life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a wind wheel surface dynamic thrust reduction method and device, equipment and storage medium, relates to the wind turbine generator control technical field, and includes: real-time monitoring of the current super-high altitude wind turbine generator; when it is judged that the current unit real-time power is greater than the threshold value, the rotating speed NP control and the rotating speed GP control are carried out; in the process of NP control, when it is determined that the dynamic rotating speed deviation reference value obtained based on the generator rotating speed is greater than the threshold value, whether the yaw angle error obtained based on the unit yaw angle is greater than the threshold value is judged, and a first judgment result is obtained; in the process of GP control, when it is determined that the dynamic rotating speed reference quantity obtained based on the tower front and rear acceleration is greater than the threshold value, whether the generator acceleration obtained based on the generator rotating speed is greater than the threshold value is judged, and a second judgment result is obtained; the pitch angle is updated based on the first judgment result and the second judgment result. The problem that the wind turbine generator cannot timely reduce the rotating speed under the extreme gust working condition and causes the unit shutdown can be effectively solved.
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Citation Information

Patent Citations

  • Double-fed type wind generating set variable pitch control method

    CN103527405A

  • Method, system and equipment for controlling load of wind generating set under extreme wind power condition

    CN116221020A