Tower health state monitoring method based on fixed detection and mobile detection

Abstract

The invention discloses a tower health state monitoring method based on fixed detection and movable detection. A fixed sensor for detecting shaking of the top end of a tower is fixedly mounted at thetop of the tower of a wind driven generator; a movement sensor capable of moving up and down along the tower and detecting vibration of the tower is mounted on the tower; the monitoring results of thesensors fixed on different tower drums are compared, and a suspected faulty tower is compared; by comparing the monitoring results of the mobile sensors on different towers, a suspected fault point of the suspected fault tower is determined. According to the invention, moving detection is introduced on the basis of fixed detection; the overall fault problem of the tower can be troubleshot, the possible position of the fault can be accurately determined, the accuracy of identifying the potential risk of the tower is improved, the wall climbing workload of inspectors can be avoided by adoptingequipment for troubleshooting in advance, the detection work efficiency is improved, and meanwhile the aerial work requirements of the inspectors are reduced.

Description

technical field [0001] The invention relates to the field of health state monitoring of wind power generation equipment, in particular to a tower health state monitoring method based on fixed detection and mobile detection. Background technique [0002] Wind power generation is a power generation method that deploys wind turbines in offshore or mountainous areas, and converts wind energy into electrical energy through the rotation of wind turbines. Wind turbines are generally deployed outdoors and are greatly affected by the surrounding environment. Wind turbines interact violently with the wind for a long time, which may cause hidden faults in the tower structure. If not eliminated in time, it may further damage the tower. Structural damage, and even tower collapse accidents may occur under the dual action of its own gravity and wind force. In view of this, it is necessary to monitor the health status of the tower in real time, and to quickly and accurately find the locati...

AI Technical Summary

Problems solved by technology

Obviously, through the health inspection of the tower, it can be found in time whether there is a connection fault in the tower, but the occurrence of tower faults is random, and the location of the fault cannot be determined in advance, so the above method can only be applied to check It is not easy to find the structural damage caused by the wind force and the self-weight of the wind turbine to the tower body itself. The health monitoring of the tower is not accurate enough or there is a waste of installing a large number of equipment while increasing the burden on the tower.

On the other hand, the strong wind acting on the wind turbine will cause the tower to sway. Only using a dual-axis acceleration sensor for monitoring may vary due to the different wind forces, which can easily cause problems such as false alarms or missed alarms. further improvement

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