Method and system for optimizing vibration monitoring position of wind power gear box, medium and equipment

Abstract

The invention discloses a method and a system for optimizing a vibration monitoring position of a wind power gear box. The method comprises the following steps: establishing a multi-body dynamic model of a transmission system of a wind turbine generator; optimizing a multi-body dynamic model of a wind turbine generator transmission system: carrying out flexible body modeling on a gearbox body, and selecting a plurality of reference positions on each monitoring point on the surface of the gearbox body corresponding to each stage of gear pair of the gearbox as virtual sensors; performing dynamic calculation on a pre-constructed wind turbine generator transmission chain simulation model to obtain movement states of each part in the gearbox and the virtual sensor, and constructing a rotation speed-time domain effective value relationship; and comparing the relationship between the rotating speed-time domain effective value of the virtual sensor and the rotating speed-time domain effective value of each part in the gearbox, and if the tendencies of the virtual sensor and the rotating speed-time domain effective value of each part in the gearbox are consistent, selecting the position of the virtual sensor closest to the movement state of each part in the gearbox as an optimal monitoring point. The method and system provided by the invention have the advantages of high accuracy, combination of simulation and test to realize a closed loop and the like.

Description

technical field [0001] The invention mainly relates to the technical field of wind power, in particular to a method, system, medium and equipment for optimizing the vibration monitoring position of a wind power gearbox. Background technique [0002] The vibration monitoring system is the guarantee for the normal operation of the wind turbine. For the transmission system of the megawatt doubly-fed unit, the monitored components mainly include the main shaft, gearbox, generator and tower. As the core mechanical component of the double-fed unit, the gearbox has more failure factors and a relatively higher failure rate. Therefore, the monitoring of the gearbox is the focus of the wind turbine online detection system. How to improve the accuracy and effectiveness of the gearbox detection Sex is even more important. [0003] Wind power high-speed and heavy-duty gearboxes have complex structures and many external interfaces. The components to be tested are mainly rotating shafts ...

AI Technical Summary

Problems solved by technology

In wind power heavy-duty gearboxes, the target parts to be measured are all rotating parts, such as planetary carriers, gears, shafts and bearings, not only cannot be directly measured, but usually, the sensors can only be placed on the surface of the box, resulting in When the motion characteristics of the component under test are transmitted to the sensor, there are multiple attenuations

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