Vibration monitoring and failure diagnosis method for wind generating set

Abstract

The invention discloses a method for vibration monitoring and fault diagnosis of a wind generating set, which comprises the following steps: A. presetting a monitoring point, arranging a sensor is arranged, outputting an original vibration signal through the sensor, and finishing the storage of the signal through data acquisition equipment; B. sending feature value data to a receiving module through a component bus module and storing the feature value data in a data center, or obtaining the original vibration signal and store the original vibration signal in the data center through the receiving module which avoids the component bus module; C. presetting a threshold curve in the data center, the feature value data grows continuously, and the receiving module performings fault early warning when the feature value data exceeding exceed a threshold and sends sending status early warning when the feature value data continuously exceed the threshold; and D. establishing a fault diagnosis module is established in an analysis module, presetting a fault diagnosis threshold is preset, the analysis module obtaining envelope signal data from the data center by the analysis module, calculating a comprehensive fault evaluation value through the fault diagnosis module, and comparing the comprehensive fault evaluation value with the fault diagnosis threshold, thereby performing fault alarming.

Description

technical field [0001] The invention relates to a vibration monitoring and fault diagnosis method, in particular to a vibration monitoring and fault diagnosis method applied to a wind power generating set. Background technique: [0002] Due to the relatively late start of the domestic wind power generation industry and the immature manufacturing technology of wind turbines, professional technical service personnel are usually required to carry out regular inspections, maintenance or troubleshooting of wind turbines during the operation phase of wind turbines to ensure that the wind turbines reliable operation. Technical service personnel need to climb to the wind turbine nacelle with a general height of 40 meters to 80 meters when the wind turbine is shut down, and use hand-held field test instruments to collect data from the deployed monitoring points for maintenance. Due to the number of wind turbines in the wind farm and the large number of monitoring and measuring point...

AI Technical Summary

Problems solved by technology

However, the existing technology does not involve the collection of vibration signals from relevant parts of the wind turbine, nor can it monitor the status of the relevant parts of the wind turbine through remote monitoring, let alone realize the function of fault diagnosis.

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