System and method for monitoring tower drum of wind power generation equipment

Abstract

The invention discloses a method for monitoring a tower drum of wind power generation equipment. A first double-shaft tilt angle sensor is arranged on a tower base plane of the bottom of the tower drum, and a second double-shaft tilt angle sensor and a swing sensor are arranged on the plane of a top cabin. The method includes the steps that a first double-shaft tilt angle is obtained through the first double-shaft tilt angle sensor; a static double-shaft tilt angle is calculated at least according to the first double-shaft tilt angle; a second double-shaft tilt angle is obtained through the second double-shaft tilt angle sensor; double-shaft swing accelerated speed is obtained through the swing sensor; state indexes of the tower drum are calculated at least according to one or more of the first double-shaft tilt angle, the static double-shaft tilt angle, the second double-shaft tilt angle and the double-shaft swing accelerated speed, the state indexes indicate the healthy state of the tower drum and comprise at least one of the tower base index, the tower top index and the tower drum index. The invention further discloses a system for monitoring the tower drum of the wind power generation equipment and the corresponding tower drum.

Description

technical field [0001] The invention relates to the field of monitoring towers, in particular to a system and method for monitoring towers of wind power generation equipment. Background technique [0002] As an important renewable energy source, wind power has attracted widespread attention. The tower of wind power generation equipment is a key part of the wind power generation unit, and its health status is a key concern in the process of wind power operation and development. [0003] Compared with Class I wind energy resource areas, the development of wind power in Class II and Class III wind energy resources usually requires longer blades and taller towers. Therefore, as the second and third types of wind energy resources gradually become the main targets of wind power development, the height of towers continues to increase. At present, the height of towers for onshore wind turbines is mostly between 50m and 120m. The tower bears the dynamic load generated by its own we...

AI Technical Summary

Problems solved by technology

[0004] At present, the common monitoring methods for the tower of wind power generation equipment are: (1) Using GPS positioning for displacement monitoring, the accuracy of this scheme cannot meet the millimeter-level tilt measurement requirements of wind turbine towers, and multiple GPS solutions are used Not only the cost is high, but also limited by the engineering construction, it must be installed on the outer wall of the tower

(2) Use the inclination sensor to measure the displacement of the tower shaking. Although this scheme is feasible, due to the failure of the existing technology to consider the nonlinear deformation characteristics of the tower body and the error problem when the static inclination sensor measures the dynamic inclination, the rigid body based The displacement calculated by the deformation assumption and the direct measurement of the inclination will be much larger than the actual displacement

(3) The acceleration sensor is used to perform two integral calculations to calculate the displacement of the tower tube. This method has the problems that the initial position cannot be accurately obtained, and the integral operation is interfered by the integral parameters and the accuracy is low.

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