Generator bearing automatic lubrication intelligent control system and method of wind turbine generator

Abstract

The invention discloses a generator bearing automatic lubrication intelligent control system of a wind turbine generator. The generator bearing automatic lubrication intelligent control system comprises a lubricant pump and an intelligent control subsystem, wherein the intelligent control subsystem comprises a communication module, a data analysis processing module, a control module and a power source module; and the data analysis processing module, the control module and the power source module are connected to the communication module. The invention also discloses a generator bearing automatic lubrication intelligent control method of the wind turbine generator. The intelligent control module is used for carrying out accurate variable period and variable grease injection amount lubrication on a bearing by taking the generator speed as the influencing factor of a lubrication cycle and grease injecting amount through combination of the mechanical lubricant pump and the intelligent control system based on the measured generator speed and a main control instruction, so that the bearing is at the optimal lubrication sate, and lubrication parameters are modified remotely, quickly and efficiently, thus, the manual modification of the lubrication parameters by a maintainer who climbs towers and enters cabins one by one is avoided, the workload is greatly saved, and the maintenance cost is reduced; an original timing and automatic lubricating device is also omitted; the complexity of the system is reduced; and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the technical field of automatic lubrication of bearings, in particular to an intelligent control system and method for automatic lubrication of bearings of wind turbine generators. Background technique [0002] The existing high-power wind turbine generator bearings are lubricated by a combination of manual lubrication and fixed-period automatic lubrication devices. During daily operation, a fixed-period automatic lubrication system is used; during half-year or one-year regular inspections, manual lubrication is used to replenish and adjust the amount of grease in the bearing chamber, and manual lubrication is only used as a supplementary means for adjusting and maintaining bearings. [0003] The current automatic lubrication system is basically a fixed-period lubrication method, that is, before the generator leaves the factory, the automatic lubrication cycle is manually set in the lubrication system. After the unit is connec...

AI Technical Summary

Problems solved by technology

The lubrication strategy adopted by this system is relatively rough, especially when the wind turbine is connected to the grid at low speed for a long time, it is easy to cause the bearing to alarm due to over-lubrication and high temperature. Long-term in this state will also cause excess grease to harden in the bearing chamber and block the grease discharge channel.

[0004] This shows that the above-mentioned existing wind turbine generator bearing automatic lubrication system obviously still has inconvenience and defects, and needs to be further improved urgently

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