Yaw automatic lubrication control and early warning method and system for wind driven generator

Abstract

The invention discloses a yaw automatic lubrication control and early warning method and system for a wind driven generator, and belongs to the technical field of wind power generation equipment. According to the method, automatic precise lubrication in the yawing process is achieved, it is guaranteed that the time length from yawing to the fixed time length is achieved, lubrication of the fixed time length is conducted, and the yawing time length is in direct proportion to the lubrication time length; the problem of uneven grease injection caused by frequent grease injection at the same point is avoided, a multiple-time small-amount lubrication mode is realized, and the use amount of lubricating grease is reduced on the premise of ensuring the lubrication effect; the residual lubricating grease amount of the grease storage tank can be accurately calculated through the accumulated operation times of the yaw lubricating pump, long-time use can be maintained under the condition that good lubrication is guaranteed, and extra grease adding is not needed. When the residual lubricating grease amount is lower than the alarm threshold value, the lubricating pump breaks down or any lubricating oil pipe is blocked, early warning can be given out, predictive operation and maintenance are achieved, and safety and stability of operation of the wind driven generator are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wind power generation equipment, and in particular relates to a method and system for automatic lubricating control and early warning of wind turbine yaw. Background technique [0002] Wind turbine yaw systems need to be well lubricated to maintain reliable operation over the life of the wind turbine. Lubrication methods are divided into regular grease lubrication and automatic lubrication. [0003] Conventional regular grease injection lubrication has the following problems: regular grease injection can only be injected when the fan is stopped, which is not conducive to the good lubrication of the bearing and the flow of grease, which is not conducive to waste grease. Discharge; regular grease injection is affected by the grease injection equipment and cannot be evenly distributed in the bearing. In the conventional automatic lubrication method, the design of the lubrication cycle and duration is not a...

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Problems solved by technology

[0003] Conventional regular grease injection lubrication has the following problems: regular grease injection can only be injected when the fan is stopped, which is not conducive to the good lubrication of the bearing all the time, and is also not conducive to the flow of grease, which is not conducive to the waste of grease Drainage; regular grease injection is affected by the grease injection equipment and cannot be evenly distributed on the bearing

In the conventional automatic lubrication method, the design of the lubrication period and duration is not adjusted according to the actual operating status of the fan, which is prone to over-lubrication or under-lubrication; when there is insufficient grease in the oil storage tank of the lubrication pump, failure of the lubrication pump or blockage of the lubrication oil pipe and other system failures occur. can lead to underlubrication

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