In China, most of the power transmission and transformation lines are located in the mountains. If the traditional manual power line inspection, the workload is very large, and the safety of personnel cannot be guaranteed. The emergence of drone technical for electricity has changed this situation.
5 applications for drone power line inspection
1. Inspection service-----Electrical inspection is more efficient with less effort
In 2019, the Chengdu Power Transmission Inspection Work Area adopted the refined autonomous inspection service of drones. The service requires the completion of 32 main network 220kV lines, 9 110kV lines, 300 kilometers, and a total of 41 lines of fine visible light inspection. A total of 4,565 line defects were found this time, including 1,406 general defects, 3,021 critical defects, and 138 major defects. Greatly reduce the cost of grid inspection by 50% and improve the inspection efficiency by 200%.
2. power line string-----power saving time and effort
Through technological innovation, Chongqing Power Supply Company adopts drone power line string tech. pay-off technology to erect ADSS optical cable in view of the fact that power lines pass through various complex terrains, and the survey and inspection workload is heavy and difficult. This not only saves manpower, improves construction efficiency and operator safety factor, but also effectively protects the ecological environment.
3. Infrastructure site selection----3D modeling is accurate and efficient
Last year, Shanxi Electric Power Design Institute conducted 3D modeling of power infrastructure site selection planning in mountainous areas. Using the advantages of unmanned aerial vehicles, the rapid modeling of complex road sections such as mountains and ridges not only improves the quality and efficiency of topographic map planning and design, but also provides detailed basic information such as images and engineering as a guarantee, minimizing the process of topographic map drawing. Possibility of error. It is more convenient for designers to evaluate the water, soil and environment of the road section, which improves the efficiency of operation and the safety of personnel.
After a natural disaster, the drone can take off and operate at the disaster site as soon as possible. Through real-time modeling technology, the 2D and 3D model information of the site can be obtained in real time to help determine the overall disaster situation of the line. In addition, drones can also ignore road damage or waterlogging, obtain damage from a high-altitude perspective, and formulate reconstruction plans through two-dimensional maps, three-dimensional models, high-definition photos and videos, and other methods.
5. Regional modeling-----automatic inspection and distribution network modeling
Using Jingwei M300 RTK equipped with L1 lidar, the point cloud data collection of the 10kV distribution network in an urban area of China Southern Power Grid of 1.9 km was completed in 10 minutes; the data processing of 6.43 GB was completed in 13 minutes by using Dajiang Zhitu software, and the distribution of urban environment was successfully completed. net model. After completing the site survey, through the "online mission recording" function of the M300 RTK, the network RTK is used for precise positioning and management, and the UAV route mission is planned. Based on the teaching route, the LiDAR point cloud is collected for the distribution line by way of waypoint flight.
