FIELD: engines and pumps.
SUBSTANCE: in method for monitoring of vanes condition in wind-powered plants by means of measurement of vane body noise with the help of sensor fixed on vane and connected to block of wireless transmission of output signals of sensors to processing unit, output signals of sensor are transmitted in wireless manner to processing unit, in which frequency spectrum is defined by signals, then it is compared to parametre reference spectra stored in processing unit and corresponding to certain failure and special condition, and on this basis vane condition is identified. Measurement of body noise is carried out on the basis of sequence of several unit measurements taken one directly after another (measurement period), each of these measurements is carried out with sensor, which rotates with vane. Start-up of each of these unit measurements is carried out according to single angle of vane rotation referred to axis of rotor rotation, all obtained frequency spectra of each unit measurement are accumulated, and frequency spectrum determined from accumulated individual frequency spectra is compared to reference spectra.
EFFECT: application of invention will make it possible to early detect and assess occurring local internal and external damages, in order to make it possible to automatically influence at plant operation.
37 cl, 4 dwg
