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Online recognition method and device for torsion frequency of wind generating set transmission chain

A wind turbine, torsional frequency technology, applied in wind turbines, monitoring of wind turbines, engines, etc., can solve problems such as difficult torsional vibration frequency of wind turbine drive chains, and achieve the effect of increasing labor costs

Inactive Publication Date: 2017-03-15
XUJI GRP +2
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Problems solved by technology

[0005] The purpose of the present invention is to provide an online identification method and device for the torsional frequency of the transmission chain of a wind power generating set, which is used to solve the problem that it is difficult to extract the torsional vibration frequency of the fan transmission chain

Method used

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  • Online recognition method and device for torsion frequency of wind generating set transmission chain
  • Online recognition method and device for torsion frequency of wind generating set transmission chain
  • Online recognition method and device for torsion frequency of wind generating set transmission chain

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Embodiment Construction

[0028] An embodiment of the online identification method for the torsional frequency of the drive chain of a wind power generating set according to the present invention:

[0029] An on-line identification method for the torsional frequency of the transmission chain of a wind power generating set, the structural block diagram of the method is as follows figure 1 As shown, firstly, the data acquisition program is responsible for collecting the operating data of the wind turbine as required, and then storing the data in the database. Finally, the data processing program reads the latest data from the database, calculates the torsional vibration frequency of the transmission chain, and then calculates the value Upload to the main control system, the process of this method is as follows image 3 As shown, it specifically includes the following steps:

[0030] 1 Through the standard MODBUS TCP protocol, the main control PLC is continuously sampled at a sampling rate of 50ms. The c...

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Abstract

The invention discloses an online recognition method and device for the torsion frequency of a wind generating set transmission chain. A data collection thread is used for conducting unintermittent sampling on draught fan master control PLC running parameters within 50 ms, the other data processing thread is triggered by the data collection thread to automatically calculate the torsion vibration inherent frequency of the draught fan transmission chain, then the torsion vibration inherent frequency of the draught fan transmission chain is uploaded to a master control PLC through the MODBUS TCP, and online tracking on the torque vibration frequency of the draught fan transmission chain is achieved. According to the online recognition method and device, angular acceleration data of a draught fan are used, and the problem that the torsion vibration frequency of the draught fan transmission chain is hard to extract is solved.

Description

technical field [0001] The invention belongs to the field of intelligent wind power generation, and in particular relates to a method and device for on-line identification of the torsional frequency of a transmission chain of a wind power generating set. Background technique [0002] With the continuous improvement of the utilization rate of wind energy, new requirements are put forward for the structure and control mode of wind turbines. The essence of wind power generation is the process of converting wind energy into mechanical energy and then further into electrical energy. The transmission chain of the entire wind turbine is formed from the wind wheel to the generator. Because of its complex structure and high precision requirements, it is very important to study the transmission chain. significance. [0003] The transmission chain of the wind turbine will generate large vibration during the transmission process, which will have a great impact on the stability, reliabi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
Inventor 田勇王海明刘伟鹏
Owner XUJI GRP
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