Wind generator set and fatigue load monitoring system thereof

Abstract

The invention discloses a fatigue load monitoring system for a wind generator set, comprising a first detecting device (211), a second detecting device (212), a control device (22) and an output device (23). The first detecting device (211) is used for detecting the fatigue state of the root of a tower barrel to obtain a first detection signal; the second detecting device (212) is used for detecting the fatigue state of at least one position outside the root of the tower barrel to obtain a second detection signal; the control device (22) is used for receiving the first detection signal and the second detection signal, processing the first detection signal and the second detection signal according to a preset strategy to obtain an actual damage value, and then comparing the actual damage value and the preset damage value to judge the damage state of the monitored position of the wind generator set; and the output device (23) is used for outputting the actual damage value of the monitored positioned. The fatigue load monitoring system has higher monitoring precision so as to maintain each member of the wind generator set in time and prolong the service life of each member. The invention also discloses the wind generator set comprising the fatigue load monitoring system.

Description

technical field [0001] The invention relates to the field of power generation systems, in particular to a fatigue load monitoring system for wind power generating sets. In addition, the present invention also relates to a wind power generating set comprising the above fatigue load monitoring system. Background technique [0002] With the enhancement of environmental protection awareness and the continuous expansion of the new energy industry, wind power generation, as one of the various power generation methods, has attracted more and more attention, and wind power generators have also developed rapidly. [0003] Wind power generation is a power generation method that converts the kinetic energy of wind into electrical energy. The device required for wind power generation is called a wind turbine. A wind turbine generally includes three parts: a tower, a wind wheel and a wind generator. During the working process, the wind acts on the blades of the wind wheel to generate ae...

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Problems solved by technology

[0008] However, the monitoring accuracy of the above-mentioned monitoring device is based on the fact that the root of the wind turbine bears most of the load, and the load of other parts of the wind turbine only accounts for a small part of the total load. , the fatigue load of some parts of the wind turbine is also relatively large, and the fatigue load of these parts is not easy to be obtained by monitoring the load at the root of the tower, so the load state of the wind turbine cannot be accurately detected. It may affect the accuracy of detection and affect maintenance work

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