A wind power generator tower health monitoring method and special detection system

Abstract

A wind-driven generator tower health monitoring method comprises the steps that (1) a dual-axis acceleration sensor collects vibration data of a tower; (2) a dual-axis tilt angle sensor collects tiltangle data of a tower footing; (3) a collecting unit extracts the accelerated speed of the tower and the tilt angle data of the tower footing; (4) the collecting unit is connected with a looped network interchanger, and the collected vibration data, tilt angle data and SCADA working condition parameters are transmitted into an on-line monitoring server; (5) the on-line monitoring server acquires the healthy state and unhealthy state of the tower, and alarming is automatically conducted when the tower is abnormal; and (6) abnormal data are transmitted to a remote diagnostic center to be analyzed through an outer net server, and a diagnostic report is presented; a special system comprises the dual-axis acceleration sensor, the tilt angle sensor on the plane of the tower footing, and the collecting unit, and the collecting unit is connected with the on-line monitoring server through the looped network interchanger; and the structural damage condition, non-uniform settlement condition andfoundation looseness condition of the wind-driven generator tower are subjected to remote on-line monitoring, and the health state of the tower is effectively evaluated in real time.

Description

technical field [0001] The invention belongs to the technical field of wind power generator tower state monitoring, and in particular relates to a wind power generator tower health state monitoring method and a special detection system. Background technique [0002] my country's wind power industry has entered a stage of rapid development. With the rapid expansion of installed capacity and the increase in the operating age of installed units, some problems in the wind power industry have gradually emerged. Wind turbines are mostly installed in areas rich in wind energy, and these areas have harsh climatic conditions. While affected by meteorological and geological factors, the tower itself also bears complex and changeable loads such as its own gravity, wind thrust, and impeller torque. As an elastic body, the tower body will produce elastic deformations such as swinging and twisting to a certain extent. Excessive swing will lead to accelerated fatigue of the tower structur...

AI Technical Summary

Problems solved by technology

Excessive swing will lead to accelerated fatigue of the tower structure, or tilt the tower foundation, resulting in potential safety hazards

Damage to the tower or excessive load will reduce the natural frequency of the tower to make it close to the rotation frequency of the wind turbine, which will intensify the vibration of the wind turbine and affect the performance of the wind turbine. In severe cases, the tower will overturn and cause huge damage. Economic losses

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