Monitoring method and monitoring system of wind turbine blades

Abstract

Provided is a monitoring method and a monitoring system of wind turbine blades. The monitoring method comprises the following steps: vibration signals of blades of wind turbines are collected by sensors; the vibration signals are extracted by a hub measurement unit disposed in the hub; the vibration signals are forwarded to a data analysis unit disposed in the cabin by the hub measuring unit; the vibration signals of different blades in the wind turbine are compared to monitor whether the blades are damaged or not. After an embodiment of the monitoring method is adopted, the damage to blades in the wind power generation unit can be monitored in real time.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a monitoring method and a monitoring system for blades of a wind power generating set. Background technique [0002] Wind turbines generally consist of blades, hubs, towers and nacelles. A wind turbine is a device that converts wind energy into the mechanical energy of the hub through the blades, and the mechanical energy drives the generator rotor to rotate, and finally outputs alternating current. [0003] Blades are the most stressed components of a wind turbine. It is also one of the most expensive parts to replace if damaged. The blade is a key component of the wind turbine. During the rotation of the blade, when the blade turns from the top to the bottom, the force changes and changes alternately, as well as the instability of the wind condition, which will cause the vibration of the wind turbine. After the wind turbine works for a long time, the physical p...

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Problems solved by technology

[0005] In summary, the following technical problems exist in the prior art: it is i

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