A wind turbine blade vibration monitoring and system considering environmental parameter correction

Abstract

The invention relates to wind turbine blade vibration monitoring giving consideration to environmental parameter correction and a system. Double-shaft acceleration sensors are arranged at corresponding positions of wind turbine blades and a draught fan hub to measure temperature data and vibration data at the wind turbine blades and the draught fan hub, and the data are transmitted to a WindBVM data acquisition unit; an industrial grade router is fixed inside a draught fan bin and is connected with a draught fan bin master control cabinet through a reticle; the WindBVM data acquisition unit obtains draught fan SCADA data from the draught fan master control cabinet, and wind speed and pitch angle environmental parameters are obtained; the WindBVM data acquisition unit stores the vibration data, the temperature data and the SCADA working condition data according to corresponding clocks, the industrial grade router is used for assisting entrance into a wind field looped network, and datatransmission is achieved through internal and external network isolation; in cooperation with the blade vibration data and the wind driven generator environmental parameter obtained through collection, accurate extraction of the blade structure inherent frequency is achieved, the blade health state is accurately identified, and real-time monitoring and diagnosing are made for the condition whetherblade tip cracks, lightning stroke damage and blade ice covering exist on the blades or not.

Description

technical field [0001] The invention relates to the technical field of modal analysis of wind power generators, in particular to a vibration monitoring and system for blades of wind power generators considering environmental parameter correction. Background technique [0002] As the world's energy use increases, so does the pressure on energy and the environment. The development of the new energy industry has also received greater attention and continuous development, and the proportion of the wind power industry in the domestic power industry has gradually increased. my country's wind power industry is currently in a stage of rapid development, and its role in optimizing energy structure and promoting energy conservation and emission reduction has become increasingly prominent. Because the locations where the wind turbines are installed are inland or coastal areas rich in wind energy resources, with the increase or decrease of the operation time of the wind turbines, the w...

AI Technical Summary

Problems solved by technology

During the operation of the fan, the blades are also subjected to the dynamic force of the wind force on it all the time, which leads to the aggravation of damage

After long-term accumulation, these small damages will eventually lead to major damage to the blades of the wind turbine, and in severe cases, the blades will break, which poses a great hidden danger to the safety of the wind farm construction personnel, and also causes great economic losses to the wind farm.

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