Method for monitoring state of gear case of wind generating set
A technology for wind turbines and gearboxes, which is applied in the testing of machine gears/transmission mechanisms, etc., and can solve problems such as long time intervals, heavy losses, and protracted maintenance work
Active Publication Date: 2011-04-13
ZHONGNENG POWER TECH DEV
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Problems solved by technology
Routine maintenance is inspection and maintenance in the shutdown state. The detection in the shutdown state cannot reflect the condition of the unit when it is running. Moreover, the time interval between each routine maintenance is too long, even if there is a problem, it cannot be found in time.
[0005] After-the-event maintenance refers to the maintenance after the wind turbine is shut down due to failure. Since the after-event maintenance requires a certain amount of time to send technicians to the remote failure site, analyze the cause of the accident, apply for spare parts and transport spare parts, it often results in protracted maintenance work and heavy losses.
[0006] At present, although the gearbox of the wind turbine can be monitored through the remote monitoring system, it can only monitor whether it is faulty, that is, the detection results are only faulty and normal, which still cannot solve the problem of long downtime mentioned above. question
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[0044] Basic steps of the present invention include the following steps:
[0045] Firstly, the present invention collects various state information that can reflect the state of the wind turbine gearbox.
[0046] Then, various state information collected are quantified in different ways according to their characteristics, and quantified values of each state information collected this time are obtained.
[0047] Afterwards, according to the weight of each state parameter and the degree of correlation between each parameter, the quantized values are fused to establish a comprehensive state value of the gearbox.
[0048] Finally, the current gearbox state is analyzed according to the gearbox comprehensive state value, and corresponding solutions are provided.
[0049] see below figure 1 The flow chart of comprehensive state monitoring of the gearbox of the wind power generating set is shown, and the method for comprehensive state monitoring of the gearbox of the present inv...
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The invention provides a method for monitoring the state of a gear case of a wind generating set, and the method comprises the steps of: A. collecting state information that reflects the state of the gear case; B. quantizing the collected state information and obtaining a quantized value of the state information; C. establishing an integrated state value of the gear case according to the quantizedvalue of the state information; D. determining the state of the gear case according to the integrated state value of the gear case. The method can realize the monitoring and analysis of the integrated state of the gear case of the wind generating set to master the integrated working state of the gear case, and therefore, maintenance or replacement can be executed before a fault occurs, thus reducing the stop time of the wind generating set.
Description
technical field [0001] The invention relates to the technical field of monitoring of wind power generators, in particular to a method for monitoring the state of a gearbox of a wind power generator. Background technique [0002] The wind turbine is the key equipment of the wind farm. For the gearbox of the wind turbine, due to the constant change of temperature and speed, the stress situation is constantly changing, and its failure rate is relatively high. [0003] Wind turbines are usually located away from suburban areas with strong winds, therefore, due to their location, it is difficult to be maintained and checked frequently. For a long time, planned maintenance and after-the-fact maintenance have been adopted. [0004] Planned maintenance means running for a certain period of time, such as routine maintenance after 2500 hours and 5000 hours, such as checking bolt torque, adding grease, etc. Routine maintenance is inspection and maintenance in shutdown state. The dete...
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IPC IPC(8): G01M13/02
Inventor 申烛范子超亓圣亮周继威余忠源孟凯锋蒋修远
Owner ZHONGNENG POWER TECH DEV