Device and method for monitoring inherent frequency of tower drum of large-megawatt wind turbine generator

A technology of natural frequency and wind turbines, applied in the monitoring of wind turbines, wind turbines, engines, etc., can solve problems such as inaccurate data, achieve the effects of ensuring accuracy, convenient and efficient management, and preventing false alarms
CN113279920AInactive Publication Date: 2021-08-20HUANENG CLEAN ENERGY RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG CLEAN ENERGY RES INST
Publication Date
2021-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a device and a method for monitoring the inherent frequency of the tower drum of a large-megawatt wind turbine generator.The device comprises a data collection unit and a control unit, the data collection unit is used for collecting vibration signals of all monitoring areas on a tower drum, and transmitting the collected vibration signals to the control unit. The control unit is used for comparing the received vibration signal with a preset threshold value and judging whether the tower drum of the wind generating set is abnormal or not according to the comparison result, three-dimensional measurement of the tower drum can be achieved, and the measurement result is more accurate.
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Description

technical field

[0001] The invention relates to the technical field of wind power generation, in particular to a tower natural frequency monitoring device and method for large megawatt wind turbines. Background technique

[0002] The tower of the wind turbine is a key component of the entire wind turbine, supporting the normal operation of the blades and all equipment in the nacelle. Moreover, under the background of the goal of "carbon peak carbon neutrality" and the background of grid parity, wind turbines With the development of megawatts, long blades and high towers, the cost of a single unit will rise. Once a problem occurs in the tower, it will seriously affect the normal operation of the unit and cause safety and economic losses. Therefore, it is necessary to focus on monitoring and maintenance of the tower.

[0003] When the wind turbine is running, the rotation of the wind wheel excites the tower to vibrate, so the natural frequency of the tower must avoid the relev...

Claims

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