Recently, behind the frequent search terms such as "high temperature in the north" and "El Nino roast", in order to cope with the challenge of climate change, the world is ushering in a magnificent wave of green and low-carbon transformation.
Under the background of the "carbon peak, carbon neutral" policy, the wind power industry shoulders important responsibilities and missions. According to the "China Renewable Energy Development Report 2020", wind power equipment and installation projects are the most important source of cost for wind power development, accounting for about 80% and 60% of the cost of onshore and offshore wind power in 2020, respectively.
Fan blades are the core components of wind turbines visible to the naked eye. Take the offshore wind turbine with the largest single-unit capacity in the world as an example. Leaves stand simultaneously. Although such a large-scale wind turbine has a considerable power generation capacity, the blades are prone to bending and deformation when the wind blows the blades head-on. During the day and night operation, every stress point of the blades may have potential safety hazards. Therefore, for such an expensive fan, daily inspection and maintenance is a big problem.
1. Detailed explanation of fan inspection problems
1. The geographical location of the wind turbines is scattered
However, although the scale of wind power generation is increasing day by day, the geographical location of wind turbines is scattered and remote, and the arrangement of wind turbines is scattered. There are many problems in the traditional manual inspection mode.
2. The tower height of the unit line increases the artificial height
For example, wind farms are mostly located in relatively remote places, and wind turbine line towers are usually up to more than 30 meters high, and the lowest height is also more than ten meters high, and they are mostly built on the edge of cliffs or in dangerous areas such as the bottom. Relying on manual labor, workers need to climb tens of meters of towers, which is not safe, but the workload is quite large.
3. Manual inspection is limited by the naked eye
Many project engineers said that relying on manual inspection or hand-held equipment inspection often takes more than a month for one inspection, which seriously affects the efficiency of wind farm line inspection. Moreover, on the one hand, manual inspections are affected by the angle of observation and cannot detect problems in a comprehensive and timely manner; on the other hand, wind power operates 24 hours a day, especially when some wind farms generate peak power at night, and often require more manpower to achieve 24 hours a day. Hours of continuous management and maintenance and emergency response capabilities.
So, besides manual inspection, is there no other inspection method?
Of course there are.
The current drone technology also gives some help.
4. Drone inspections are expensive
However, the use of unmanned aerial vehicles requires very high technical requirements for unmanned aerial vehicles, especially in a complex environment such as wind farms. It is extremely easy to cause safety accidents such as crashes due to human error, and damage ground equipment and personnel. Unpredictable security risks and equipment damage costs.
Is there a patrol inspection method that can be scheduled regularly, and is low-cost, high-efficiency, and high-safety?
(2) Actively attacking Chinese surveillance manufacturers: 4K/8K AI inspection
Boguan 8K uses the mature 8K ultra-high-definition acquisition technology and integrates AI technology to establish an ultra-high-definition intelligent inspection system, combined with front-end monitoring equipment for remote intelligent inspection, which is suitable for high-efficiency blade inspection, regular inspection, blade defect identification and Inspection after blade repair. In the wind turbine inspection scene, Boguan 8K cameras with AI algorithms are installed to complete regular and regular automatic inspections. Its large zoom, large scene, and ultra-high-definition features are enough to make all information within the coverage of the camera's field of view clear. Chu. During the period, the inspection data identified by AI can be stored locally or automatically uploaded to the cloud through the network. The terminal can see the on-site inspection screen in real time, realizing the full automation of unmanned inspection and data transmission.
Up to now, Boguan 8K has successfully developed the 8K+5G+AI ultra-high-definition surveillance camera S1/S3, and the 8K dual-spectrum camera S2. Boguan 8K S series surveillance cameras are widely used and have rich engineering project application verification, and the equipment is difficult to use. Low, no need to specially train professional personnel, ordinary personnel can be competent for the job after training, effectively reduce the risk of inspection personnel working at heights, reduce the routine inspection workload of operation and maintenance personnel, and achieve more intelligent and efficient digital and refined management.
1. Clearer detail detection, every focus is 8K
The core of wind turbine inspection is the display effect of the monitoring screen. Boguan 8K can achieve the highest 8K-level image rendering effect, the resolution is MAX, and the magnification of N times is still 33 million pixels, which can effectively prevent the loss of important details. At the same time, the front-end acquisition camera supports multiple preset position settings. Regardless of the rotation angle and magnification, every focus allows the details to be fully preserved to achieve efficient detection.
2. AI recognition makes detection more efficient
Quickly perform fault detection and fault information confirmation, and complete the record of fan surface damage. AI image recognition technology can accurately carry out preliminary defect screening, rapid classification and identification, and automatic analysis and report generation, so as to realize fast and efficient inspection of wind farms.
3. Wider monitoring scope, cost reduction and efficiency increase become a reality
If there is a wind power project that needs to be inspected, when one 8K monitor is used, the same amount of monitoring range and effect requires 16 ordinary 1080P monitors. 8K monitoring can reduce the number of camera positions by more than ten times and save the land area by more than ten times. Similarly, if the smart inspection is to be stable, the front-end monitoring needs to be set up. One large 8K monitor saves labor and material costs for installation than multiple small monitors.
4. Adjustable shutter speed to restore the instantaneous state of the blade
When the fan blades rotate, the instantaneous speed of the blade tip can be as high as 200-300 km/h. If the shutter speed does not meet certain requirements, the captured image will be deformed and smeared, which will directly affect the inspection effect of the fan blades. Boguan 8K S series surveillance cameras not only have 33 million ultra-high-definition pixels, but also the shutter speed can meet 1/30 to 1/156250 seconds. When the blades are in the low-speed maintenance state and ultra-high-speed rotation state, they can clearly capture the fan blades and restore them to reality. The transient state of the blade as it turns.
5. Faster 8K transmission, data is no longer a burden
Benefiting from BOSMA's independent research and development of 8K technology, the transmission of 8K images is no longer a data burden. In remote wind farms, Boguan 8K cameras will be distributed among them. While inspecting the site conditions, the generated data will be transmitted to the background of the system, which not only avoids potential safety hazards that may occur in manual inspections, but also realizes data intelligence. collection and analysis.