WIND POWER GENERATOR VIBRATION STATE MONITORING AND DIAGNOSING SYSTEM

摘要

The present invention relates to a wind power generator vibration state monitoring and diagnosing system for attaching an acceleration sensor to a wind power generator, monitoring the state of the wind power generator by using a vibration characteristic acquired from the acceleration sensor, and diagnosing a broken part. The disclosed vibration-based defect detection method comprises the steps of: collecting vibration data of a wind power generator by a plurality of sensors; extracting a first characteristic value of a time domain on the basis of the vibration data; and extracting characteristic values for one or more frequency bands per location of each sensor in a frequency domain or an envelope frequency domain, if the first characteristic value is larger than a preset alarm setting value, wherein if at least one characteristic value among the characteristic values is greater than or equal to a preset normal value, it can be determined that there is a defect.