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For the first time, China Southern Power Grid carried out independent fine inspection of UAV on DC l

  2020-01-11

introduce:Recently, China Southern Power Grid carried out the first autonomous fine inspection of DC line UAV, and conducted the pilot flight of autonomous fine inspection of multi rotor UAV on 500kV niucong A and B DC lines. This flight takes off with one key and

Recently, China Southern Power Grid carried out the first autonomous fine inspection of DC line uav, and conducted the pilot flight of autonomous fine inspection of multi rotor UAV on 500kV niucong A and B DC lines. This flight takes off with one key and automatically lands without manual operation, greatly improving the safety, quality and efficiency of UAV patrol inspection.
This pilot flight is based on the laser point cloud data collected in the helicopter patrol inspection, and the high-precision tower coordinates are obtained through the post differential calculation, and the autonomous flight route is planned on the tower laser point cloud model. The multi rotor UAV with RTK (real-time dynamic) is used to hover at a fixed point at the tower shooting position of 3-4m for shooting, and the ground wire hanging point, insulator string, hardware and other parts are opened Fine inspection was carried out.
It is reported that the UAV can complete the shooting of all parts of each base tower in 3 minutes. The inspection photos can clearly distinguish pin level defects, and the data quality is high, which can meet the operation and maintenance requirements of refined inspection.
It is reported that the multispectral, orthophoto, tilt photography and 360 panoramic image data field collection work of 500kV cattle from A-B DC line was started in October 2019. The power supply personnel established a three-dimensional model from the actual tower parameters of A-B DC line with 500 kV cattle, added multi-layer three-dimensional visual display, integrated multi-dimensional and multi-source external data, fused the external data with the tower information of the line, and realized the organic association of transmission line equipment information, patrol information, channel environment, etc. Combined with the laser point cloud data collected by helicopter airborne lidar, China Southern Power Grid Corporation has realized the operation and maintenance visualization of 500kV cattle from the transmission channel of A-B DC line, and assisted in the construction of cattle from DC intelligent line.
Next, China Southern Power Grid Corporation will further apply UAV technology, improve the data quality and application level of UAV inspection, and better serve the operation and maintenance of the main grid frame of west east power transmission.

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