| 摘要 |
A method for identifying a wind or water turbine or component thereof for maintenance, the method comprises the steps of: analysing vibration data for the wind or water turbine or component thereof thereby providing one or more vibration signatures; determining a health index HI from the one or more vibration signatures; and comparing the health index with a maintenance threshold value. Preferably, the analysis utilises at least one of: peak amplitude, RMS, kurtosis, crest factor, sideband factor, and energy present in the vibration data at a particular frequency. The health index comprises the steps of: providing corresponding weighting factors for the one or more vibration signatures; and summing a product of the one or more vibration signatures and the corresponding weighting factor. Rotational speed of a component is also determined based on vibration signatures and a scaling factor (see figures 3 & 4). |
