Method for Improving Data Efficiency of Multiple Beam Range Sensors in Bad Weather

Abstract

The invention discloses a method for improving the data efficiency of a multi-beam distance sensor in severe weather, including: installation and calibration of a single-line distance measurement module: the angle between the beam S1 and the vertical line on the ground is the smallest, and the angle between the beam Sm and the vertical line on the ground is the smallest. The angle is the largest, and the light beam Sm continuously monitors the fan blades when they are running; the real-time data processing of the single-line ranging module: the single-line ranging module collects data at a fixed frequency, caches and processes the data in real time, and eliminates invalid data. The main control of the wind turbine performs data transmission. The invention optimizes the beam calibration position and data processing of the headroom single-line ranging module: by optimizing the installation position of the single-line ranging module, it is ensured that the beam hits the blade all the way, thereby obtaining a real-time rotational speed; by processing the collected data, an invalid The interference of data on the measured value improves the signal-to-noise ratio, and effectively improves the problem of low efficiency of single-line ranging module measurement data.

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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