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Device and method for monitoring damping effect of elastic support of gearbox of wind turbine generator

A technology of elastic support and wind turbines, applied in the monitoring of wind turbines, wind turbines, engines, etc., can solve the problems of elastic support damage, large calculation errors, impact evaluation, etc., achieve less parameter variables, reduce calculation errors, and ensure safety The effect of stable operation

Active Publication Date: 2021-05-07
HUANENG CLEAN ENERGY RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the operation of wind turbines is easily affected by wind conditions, and its operating parameters are mostly non-stationary and nonlinear, the sampling method above is prone to large calculation errors, which affects the actual evaluation
In addition, when it is detected from the displacement change that there is a problem with the stiffness of the elastic support, it means that the elastic support has been damaged to a certain extent, and there is a certain delay

Method used

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  • Device and method for monitoring damping effect of elastic support of gearbox of wind turbine generator
  • Device and method for monitoring damping effect of elastic support of gearbox of wind turbine generator
  • Device and method for monitoring damping effect of elastic support of gearbox of wind turbine generator

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Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a wind turbine gearbox elastic support vibration reduction effect monitoring device, the wind turbine gearbox includes a gearbox frame 5 and a gearbox 7, a torque arm is installed on the gearbox 7, and the bottoms of the two ends of the torque arm are installed vertically There is an elastic support 6, one end of the elastic support 6 is installed on the gear box frame 5, and the other end is connected with the bottom surface of the torsion arm. It is characterized in that the elastic support damping effect monitoring device of the wind turbine gearbox includes several vibration acceleration Sensors, a vibration acceleration sensor is respectively installed at both ends of the upper surface of the torsion arm, respectively the first vibration acceleration sensor 1 and the second vibration acceleration sensor 2, and a vibration acceleration sensor is respectively installed at the two ends of the gear box frame 5, respectively It is the third vi...

Embodiment 2

[0038] A method for monitoring the vibration reduction effect of an elastic support of a wind turbine gearbox, comprising the following steps:

[0039] S1. According to the device of Embodiment 1, a vibration acceleration sensor is arranged.

[0040] S2. Collect a set of vibration acceleration sensor signals to obtain a set of vibration acceleration data. Set the sampling frequency of the vibration acceleration sensor before collecting. Considering the calculation amount and monitoring effect comprehensively, the sampling frequency of the four vibration sensors can be set to 3000Hz (the sampling frequency can be set according to the model, but it cannot be lower than 2.5 times the highest meshing frequency) ;

[0041] Considering that the high-frequency vibration of the frame will be aroused during the yaw of the unit against the wind, it is equivalent to adding additional background noise to the third vibration acceleration sensor 3 and the fourth vibration acceleration sens...

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Abstract

The invention discloses a device and method for monitoring the damping effect of an elastic support of a gearbox of a wind turbine generator, and belongs to the technical field of state monitoring of the wind turbine generator. According to the vibration characteristics of the gearbox and the vibration isolation rule design of the elastic support, filtering processing and multi-band monitoring are carried out on collected signals, comprehensive monitoring is ensured, the monitoring effectiveness can be ensured by performing filtering and frequency-band-division processing on collected signals, and vibration effective values are compared in a targeted manner according to frequency bands, so that the operation state of the elastic support is mastered, the vibration reduction effect is effectively calculated, and the operation state of the elastic support is mastered. Parametric variables involved in calculation are few, calculation errors can be greatly reduced, and robustness is improved. The operation state of the elastic support of the gearbox can be monitored on line in real time, damage to a unit caused by failure of the elastic support is prevented, the predictive maintenance function is achieved, and safe and stable operation of the unit is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wind turbine state monitoring, and relates to a monitoring device and a monitoring method for the elastic support vibration reduction effect of a gearbox of a wind turbine. Background technique [0002] The elastic support mainly plays two roles in the wind turbine: one is to support the gearbox to carry the load of the wind turbine, which requires its rigidity to meet the elastic support not exceeding a certain amount of deformation when the unit is running, so as to ensure the stability of the unit operation The second is vibration reduction and vibration isolation. The spring-damping system composed of elastic supports reduces the impact on the frame during the operation of the gearbox and protects the unit. As the operating time of the unit increases, parts and components will age, and the elastic support plays an important role in protecting the frame. Whether the vibration isolation effect is normal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF05B2270/33F03D17/00
Inventor 蔡安民蔺雪峰焦冲李媛林伟荣许扬
Owner HUANENG CLEAN ENERGY RES INST
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