VDI 3834 Part 1application

VDI 3834 Part 1Feasible application specifications for mechanical vibration measurement and diagnosis of wind turbines have been provided. It is applicable to all from100KWto3MWMeasurement of gearbox vibration in the generator set.VDI 3834 Part 1The standard does not provide solutions for assessing the torsional vibration of transmission mechanisms and the condition of roller bearings and gears.

measurement method

Due to the long-term exposure of wind turbines to wind fields and the influence of changes in wind speed and direction, vibration can vary significantly in all directions. The existing equipment status monitoring modes, such asISO 10816The application scope of standards is also limited. For wind turbines, it is necessary to measure the average vibration value, which is the root mean square value, during a certain period of time（RMS）It reflects in the measurement cycleT0Total vibration stress during the period.

Including wind turbine tower and nacelle in aerodynamics0.1to10HzThe recommended measurement period for relatively high amplitude vibrations at the main frequency is10minute This ensures that the frequency measurement is less than1HzIn terms of different work states, it is necessary to divide them10The total measurement cycle per minute can be divided into several areas, and the total vibration value can be calculated according to the following formula:

MetraSuccessfully provided the current * model in its true senseVM-WIND+Fully automatic fan measurement software, it*VDI-3834Related standards, and can perform functions such as vibration assessment, measurement, and analysis.VM-WINDFan vibration testing software is a*VDI 3834The required vibration measurement and evaluation system for wind turbine units.VDI 3834At the same time, guidance values for vibration assessment of wind turbine generators are also provided for comparison.VM-WINDProvide automatic evaluation software module functionality. The results can be displayed in the form of traffic lights and digital displays.VM-WIND+The fully automatic fan measurement software is available in Chinese, English, and German versions.

Evaluation criteria and reference values

VDI 3834 Part 1Sufficient measurements can be taken for vibration assessment of different fans using two evaluation criteria. *Standards refer to equipment components such as tower, engine compartment, gearbox, or generator set.