A wind turbine generator high-speed shaft dynamic centering monitoring method and system

Abstract

The invention discloses a wind driven generator high-speed shaft dynamic centering monitoring method. The method comprises following steps that a, a gearbox high-speed shaft is provided with a pulse trigger device and a centering detection device; b, a periodical pulse signal generated by the pulse trigger device is used for triggering the centering detection device of the wind driven generator high-speed shaft to measure centering data; c, every time the wind driven generator high-speed shaft rotates by a circle, centering data with the set time number are measured, and through the wireless transmission manner, the centering data are transmitted to a signal processing module; d, the measured data are analyzed, the actual measuring deviation values delta x, delta y and delta theta are obtained, through comparison of values of the actual measuring deviation and the allowable deviation and the acute measuring deviation and the preset limit deviation, the real-time centering state of a unit is analyzed, the unit centering state is sent to a master control system, according to the corresponding centering state, the unit control strategy is adjusted, early warning or alarm signals are sent out, and unit safety is ensured; the invention further provides a wind driven generator high-speed shaft dynamic centering monitoring system. Through the system and method, the dynamic centeringstate of the high-speed shaft can be effectively monitored, and the unit running reliability can be improved.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method and system for monitoring dynamic centering of a high-speed shaft of a wind power generating set. Background technique [0002] The output shaft of the wind turbine gearbox and the generator shaft are connected through a coupling. During operation, the coupling needs to be aligned regularly. If the deviation is large, it must be corrected in time, otherwise it will be out of alignment for a long time The operation is easy to cause excessive vibration of the unit, resulting in damage to the coupling or damage to the bearings at both ends of the high-speed shaft. The wind turbine gearbox and the generator are elastically connected to the support, and the relative positions of the gearbox shaft and the generator shaft are constantly changing during operation. The existing alignment method is to adjust the complete alignment of the two shafts in the static state of the ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing high-speed shaft of wind power generators that cannot monitor the dynamic centering state and the operating reliability of the unit is poor, in order to effectively monitor the dynamic centering state of the high-speed shaft and improve the operating reliability of the unit, the present invention proposes a wind power Generator high-speed shaft dynamic centering monitoring method and system

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