Autonomous unmanned aerial vehicle fan blade polling system and method

Abstract

The invention belongs to the technical field of wind power equipment detection and relates to an autonomous unmanned aerial vehicle fan blade polling system and method. The autonomous unmanned aerial vehicle fan blade polling system comprises an unmanned aerial vehicle used for carrying out automatic polling on fan blades, a polling vehicle used for stopping and placing the unmanned aerial vehicle, a ground station used for receiving and processing image data sent by the unmanned aerial vehicle to control the unmanned aerial vehicle and a specialist terminal used for judging and analyzing the image data of the ground station. The autonomous unmanned aerial vehicle fan blade polling method comprises the following steps: starting polling; positioning; finding a fan nose by the unmanned aerial vehicle after taking off; processing image data, and judging whether the fan nose is found or not; starting an automatic polling mode; shooting fan blades by the unmanned aerial vehicle flying along the edges of the fan blades, and transmitting blade image data to the ground station; determining whether the fan blades are in fault or not by a maintainer, transmitting the fan blades which can not be determined to the specialist terminal, and judging and analyzing by the specialist terminal; and finishing the polling. The autonomous unmanned aerial vehicle fan blade polling system and method have the advantages that on-the-spot control of the maintainer is not required, a vehicle collision accident can be avoided, manpower resource is saved and popularization and application are easy.

Description

Technical field [0001] The invention belongs to the technical field of wind power equipment detection, and relates to a fault inspection system and method for wind power fan blades, in particular to an autonomous drone inspection fan blade system and method. Background technique [0002] In the prior art, in the technical field of maintenance of wind turbine blades in wind farms, there are mainly the following three maintenance methods: [0003] The first type: do not do any daily maintenance, repair afterwards; [0004] This kind of operation mode is common in wind farms with relatively backward management in China. Due to lack of equipment and methods and no professional maintenance personnel, this type of wind farm does not conduct inspections on the wind turbine blades, and take corresponding measures after the obvious failure of the blades has caused the attention of maintenance personnel. Maintenance measures. There are obvious problems with this kind of method. One is the hi...

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Problems solved by technology

[0004] This type of operation generally exists in wind farms with relatively backward management in China. Due to the lack of equipment and means and no professional maintenance personnel, this type of wind farm does not conduct patrol inspections on fan blades, and takes corresponding measures only after the blades have obvious faults that attract the attention of maintenance personnel. maintenance measures

This type of method has obvious problems. First, the cost of maintenance measures is high. When a blade has a problem and needs to be replaced, three blades of the same fan must be replaced at the same time. A blade of Vestas is about 300,000 yuan, and one blade needs to be replaced. The time is 2 to 3 days, which consumes a lot of manpower, financial resources and time

The second is that most of the accidents in wind farms occur during the period of high wind power generation. Serious accidents require power generation to be stopped, which brings huge economic losses to wind farms

[0008] At present, the wind power industry has a method of manually operating drones for blade inspection in wind farms with relatively advanced technology, but this method is still in the experimental stage and is not yet mature, and there are still many problems in this method

First, the operation of the UAV requires the driver to have superb driving skills and rich driving experience, which is not available to the maintenance personnel of the wind field

Second, due to the operation of the maintenance personnel or the influence of external factors, the high-speed drone blades are likely to hit the fan blades. The consequences are very serious, resulting in unnecessary high property losses

The third is that due to the technical limitations of the maintenance personnel, it is impossible to take all-round pictures of the fan

Fourth, this method requires maintenance personnel to operate the drone at all times, which still requires a lot of human resources

Fifth, due to the technical limitations of this method, it is not easy to carry out large-scale promotion and use of national wind farms in China

The traditional blade inspection has the following disadvantages: (1) Low inspection efficiency and high labor intensity; (2) High-altitude operation, high inspection cost; (3) Long inspection time, large power loss due to shutdown

More advanced inspection methods use manual drones to take close-up shots, and ground personnel can judge whether the blade is faulty through the image. However, this blade inspection method has the following disadvantages: (1) The inspection efficiency is not high, and the labor intensity of workers is high; (2) It is dangerous, and it is easy to cause serious consequences of collision; (3) Maintenance personnel generally lack the skills to operate drones, which is not conducive to the promotion and use of drones in various wind farms

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