Method for monitoring and controlling clearance between wind power generator unit blade and tower drum

Abstract

The invention discloses a method for monitoring and controlling the clearance between a wind power generator unit blade and a tower drum. The method comprises the following steps: step 1, mounting a first laser distance-detecting sensor and a second laser distance-detecting sensor at preset positions of a wind power generator unit cabin; step 2, enabling the first laser distance-detecting sensor and the second laser distance-detecting sensor to separately emit laser detecting beams, and detecting the distances between the first laser distance-detecting sensor as well as the second laser distance-detecting sensor and an external obstacle which the laser detecting beams encounter in real time; and step 3, when the distance between the first laser distance-detecting sensor or the second laserdistance-detecting sensor and the external obstacle is within a preset effective detecting distance range, judging whether the blade tip of the wind power generator unit blade enters a warning rangeor not, and triggering the execution of preset control operation. By the adoption of the method disclosed by the invention, the clearance between the blade tip of the wind power generator unit blade and the tower drum can be effectively monitored and controlled, the risk of collisions between the blade tip of the wind power generator unit blade and the tower drum can be remarkably reduced, and then the running risk of a wind power generator unit can be reduced.

Description

technical field [0001] The invention relates to the technical field of wind power generator control, in particular to a method for monitoring and controlling the clearance between blades and towers of wind power generators. Background technique [0002] At present, with the continuous increase of the single unit power of wind turbines, the length of the blades continues to increase, and it is becoming more and more difficult to ensure the clearance between the blade tips of the wind turbines and the tower (the clearance refers to when the hub of the wind turbine rotates, the blades sweep When the tower is used, the minimum geometric distance between the blade tip and the tower wall). At this time, once the tip of the high-speed rotating blade collides with the tower tube, it will face the risk of the machine crashing and the tower falling down, causing huge property losses and possibly endangering life safety. [0003] The Germanischer Lloyd (GL) wind turbine design certifi...

AI Technical Summary

Problems solved by technology

However, due to the wide variety of installation and operating environments of wind turbines, there is currently no reliable technical means that can effectively monitor and control the clearance between the blade tip of the wind turbine and the tower, and reduce the air gap between the blade tip and the tower of the wind turbine. risk of collision and reduce stress on the unit design

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