Wind generating set blade health monitoring device and monitoring method

Abstract

The invention discloses a wind generating set blade health monitoring device and method, and the device supports a sound level meter and a protective cover through the cooperation of a radial support and a circumferential support, and measures the audio information of a plurality of orientations at the same time. According to the method, noise characteristic parameters are analyzed in a frequency domain space, interference of environmental noise on unit noise is removed, blade noise information is extracted by using a wind wheel rotating speed, and a blade noise characteristic parameter space distribution rule is positioned by using a unit yaw angle; extracting a frequency domain energy amplitude under the condition of discrete parameter combination through discrete environment temperature, wind wheel rotating speed and relative angle direction parameters, and correcting a measurement error; using discrete parameter value domain integration to define a blade noise feature distribution state result variation; according to the device and the method, through collection, analysis and evaluation of noise data in the operation process of the wind generating set, the blade operation health state is monitored and judged, and technical support is provided for health monitoring work of the blade of the wind generating set.

Description

technical field [0001] The invention belongs to the field of wind power generator blade health monitoring, and relates to a wind power generator blade health monitoring device and a monitoring method. Background technique [0002] In order to ensure the continuous and efficient operation of wind farms, the technical level of wind turbine health monitoring is also constantly improving. Due to the harsh working environment, the rotor blades of wind turbines are one of the most prone to performance degradation and even failure among the large components. Therefore, blade health monitoring has always been valued by technicians in the industry. After long-term operation, the blade may exhibit problems in the following aspects: surface stains, peeling of the leading edge coating, peeling off of glue blocks in the cavity, cracking of the trailing edge adhesive glue, propagation of cracks in inner skin laminate folds, etc. Due to the increasing design size of blades, it is difficul...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems in the prior art, to provide a blade health monitoring device and monitoring method of a wind power generator set, aiming to solve the limitations of the accessibility of the monitoring device and the effectiveness of the monitoring method in the prior art of blade health monitoring technical problem

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