Method for improving data efficiency of multi-beam distance sensor in severe weather

Abstract

The invention discloses a method for improving the data efficiency of a multi-beam distance sensor in severe weather; and the method comprises the steps: performing installation and calibration of a single-line distance measurement module: enabling an included angle between a light beam S1 and a ground vertical line to be minimum, enabling an included angle between a light beam Sm and the ground vertical line to be maximum, and enabling the light beam Sm to continuously monitor a fan blade during the operation of the fan blade; and performing real-time data processing of the single-line distance measurement module: enabling the single-line distance measurement module to perform data acquisition at a fixed frequency, performing real-time caching and processing on the data, eliminating invalid data, and performing data transmission to a fan master controller. The light beam calibration position and the data processing aspect of the clearance single-line ranging module are optimized; themounting position of the single-line ranging module is optimized to ensure that a light beam always irradiates a blade, so that the real-time rotating speed is obtained; by processing the acquired data, the interference of invalid data on the measured value is proposed, the signal-to-noise ratio is improved, and the problem of low efficiency of the measured data of the single-line ranging module is effectively solved.

Description

technical field [0001] The invention relates to the field of measurement, in particular to the technical field of fault monitoring of wind power generating sets, in particular to a method for improving the data efficiency of a multi-beam distance sensor in bad weather. Background technique [0002] The existing headroom radars include lidar and video headroom radars. Under certain weather conditions (such as strong sunlight, rain and fog), the signal-to-noise ratio of the radar is reduced, and the corresponding headroom data cannot be effectively measured, so that the fan The feedback control of the master is affected. [0003] The blade clearance of a wind turbine actually refers to the minimum gap between the blade tip and the surface of the tower (Blade Tip to Tower Clearance). The headroom of the fan unit has met the design standards during design, but in the actual operation of the fan, the headroom of the blades will change with the actual wind conditions on site: whe...

AI Technical Summary

Problems solved by technology

[0006] In view of the problems existing in the background technology (due to the fact that most of the wind turbines are installed in remote areas and the climate is changeable, the clearance radar is installed and data collected according to the existing scheme, and the laser radar will be measured in strong sunlight and rainy and foggy weather. Accuracy is affected, resulting in low efficiency of measurement data under these weather conditions), the present invention optimizes the beam calibration position and data processing of the clearance radar to effectively improve the problem of low efficiency of radar measurement data

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