Method and system for improving availability of wind turbine generator through redundancy protection clearance

Abstract

The invention discloses a method and a system for improving the availability of a wind turbine generator through redundancy protection clearance, which are mainly used for performing redundancy control based on double laser radar sensors, performing data inspection intelligent control at the same time, performing real-time inspection by fully utilizing the relevance of laser on a time axis and a space axis, and improving the availability of the wind turbine generator through redundancy protection clearance. Under extreme weather or severe working conditions, clearance monitoring is reliable and controllable, unit clearance is safe and controllable, and a unit operates safely and stably. According to the method, deep screening is carried out from the data perspective, accurate data is identified from a source, interference data is eliminated, and a foundation is laid for follow-up clearance control; according to the method, the risk of clearance control caused by looseness of the clearance monitoring system is effectively checked, recognition and pre-judgment are performed in advance, and a window period is preempted for fault processing; according to the method, two laser beams are fully utilized for data complementation, clearance monitoring is ensured to be effective in real time, interference of severe weather on clearance is effectively recognized, judgment and early warning are carried out in advance, the availability of a unit is improved, and fault misjudgment is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power generation control, in particular to a method and a system for improving the availability of wind turbines through redundant protection clearance. Background technique [0002] With the comprehensive consideration of large-scale wind turbines, cost and load, etc., the blades are also developing in the direction of getting longer and lighter, which inevitably leads to larger and larger deformation of the blades in large-scale wind turbines. Dangerous distances where the blades are close to the tower wall are prone to occur. [0003] At present, mainstream manufacturers will also consider adding blade monitoring devices to protect the headroom of the unit and prevent the risk of blade sweeping towers. Technically, there are laser directions, image directions or millimeter wave directions, but most of them use lidar for distance detection. No matter which technology is used for distance detection...

AI Technical Summary

Problems solved by technology

No matter which technology is used, including lidar technology for distance detection, it may occur that the visibility decreases in extreme weather, the measurement distance is inaccurate, or the monitoring itself is loose or malfunctioning.

This will cause the unit to be in danger, or the unit can only be forced to shut down, wasting great wind energy in vain

[0004] In the existing patent literature, in order to solve this situation, the main consideration is to optimize the distance measurement instrument and the supporting installation structure or measurement method, and there is no use of signal data for in-depth screening and redundancy protection in terms of control strategy. Control strategies, effective inspection and judgment of the reliability of the headroom monitoring system, etc., so as to ensure the safety of the unit, reduce the failure rate caused by the headroom of the unit, improve the availability of the unit, and improve the power generation efficiency of the unit

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