UAV inspection as a new inspection technology that uses patrol equipment such as visible light and infrared cameras to patrol transmission lines has many advantages compared with manual inspection. In the next step, the core technology of UAV operations should be fully promoted, the cultivation of composite inspection personnel should be accelerated, and the application of artificial intelligence technology in the field of UAVs should be promoted.

UAV inspection has become an indispensable means of line operation and maintenance

Regular inspections of transmission lines, grasping and understanding the operation of transmission lines and the changes of the surrounding environment and line protection areas are a heavy daily task for power supply companies. Manual inspection is a traditional inspection method, and it is also the main method of current transmission line inspection. Due to the complex terrain of the transmission line corridor, there are almost no patrol roads in some sections along the river, such as cross-river crossings or high mountains and mountains. This kind of inspection method is labor intensive, working conditions are difficult, and the operation of transmission lines is difficult. Not getting timely feedback.

UAV inspection is a new inspection technology that uses patrol equipment such as visible light and infrared camera to inspect the transmission line. It has rapid, high efficiency, no geographical influence, high inspection quality and safety. High quality. According to statistics, the use of drones for defect identification, the position of the bottle mouth and above, the defects that are difficult to find by labor accounted for 78.5%. The inspection efficiency and quality of the equipment body are significantly improved, and the labor intensity is greatly reduced, the inspection efficiency is improved, and the operation and maintenance capability of the state of the power equipment is ensured. Therefore, the application of the drone is an effective solution for the intelligent development of line inspection.

At present, the State Grid Corporation has included the inspection of drones into the lean assessment indicators of transmission lines. By the end of 2017, all units of the company's system were equipped with more than 1,800 types of drones. In 2017, the cumulative inspection tower of UAVs exceeded 210,000 bases, and more than 50,000 defects were found. According to the location of defects, The defects of the line equipment and auxiliary facilities at the bottle bottom and above are mainly 75.8%; according to the defect grade, the general defects are mainly, accounting for 87.2%; according to the defect type, the metal-based defects are mainly, accounting for 42.7%. Various units of the company system widely used UAVs to carry out line inspections. They played a prominent role in the G20 summit, the BRICS meeting, the National Games and the party's 19th power conservation work. The drone inspection has become a transmission line. An indispensable means of peacekeeping.

China Electric Power Research Institute actively provides technical support for drone inspection

In recent years, the Chinese Academy of Electric Power has continuously explored and actively carried out technical research and provided technical support for the company to carry out drone inspections and achieved fruitful results.

In 2013, the State Grid Corporation's Pilot Work Plan for Transmission Line Helicopter, UAV and Manual Collaborative Inspection Mode was issued. Under the unified organization of the company, China Electric Power Research Institute took the lead in establishing technical support systems for drone inspection technical standards, test research and testing, personnel training and support, and strongly supported the drone inspection technology in the company system. Promotional application.

In 2015, the Technical Guidelines for the Inspection of Overhead Transmission Lines for Overhead Transmission Lines, which was drafted by the Chinese Academy of Electric Power, was officially released. The standards stipulated the inspection system and inspection requirements for the inspection of overhead transmission lines by drones. , pre-inspection preparation, inspection methods and methods, inspection contents, inspection and handover of inspection data, and abnormal situation handling, etc., applicable to inspections of overhead transmission lines by fixed-wing UAVs and rotary-wing UAVs operation.

At the same time of writing standards, China Electric Power Research Institute has also compiled a performance testing program for UAV inspection system, independently designed and developed UAV inspection technology testing and research key equipment, formulated relevant testing specifications and standards, and relied on State Grid Corporation. The UHV AC test base has established a comprehensive test base that includes complete technical research and test and detection capabilities in seven major categories including cruise performance, inspection performance, anti-electromagnetic interference, and environmental adaptability. The test environment conditions are controllable. The test safety risk is controllable, and the test results are evaluated quantitatively and standardized.

In 2016, China Electric Power Research Institute became the first testing organization in China's power industry with the qualification of CNAS/CMA for drones. It carried out the test and inspection work in strict accordance with the requirements of CNAS/CMA system, and unifiedly selected and unified bidding for drones. Procurement and unified technology research and development have laid a solid foundation. At present, more than 50 types of UAV type tests have been completed, and more than 100 performance test reports have been issued. The test report issued is the only basis for the State Grid Corporation to purchase and purchase drones.

With the strong support of the State Grid Corporation of China, the Chinese Academy of Electric Power has built a post-skills training capability for the UAV patrol personnel consisting of two parts: the actual training ground and the three-dimensional virtual training system.

In 2017, China Electric Power Research Institute and China Aviation Association Navigation Branch signed a cooperation agreement in Beijing to jointly establish the “State Grid UTC UAV Training and Testing Center” to improve and improve the UAV training and assessment standards, and to achieve basic skills training and professional skills. The training is effectively docked, the quality of training is comprehensively improved, and the drones are promoted in the power industry to be standardized and applied in an orderly scale. Not long ago, the first transmission line drone inspection skill competition jointly hosted by State Grid Corporation and jointly hosted by State Grid Hubei Electric Power and China Electric Power Research Institute started at the UHV AC Test Base. The competition improved the professional knowledge and practical skills of the drone inspection team, creating more opportunities for exchanges and learning for the line operation and maintenance personnel of each unit.

China Electric Power Research Institute has developed a comprehensive control system for the inspection of UAVs in the UAV patrol business, and initially built a duty control center and a patrol data application center. The system adopts a three-level structure of the State Grid Corporation, the provincial company, and the prefecture company. Different users have different operational and management rights. At the same time, it can access the UAV inspection real-time data and airspace declaration data, and can display the whole process of inspection and airspace warning information in real time, realize the all-weather monitoring of the UAV operation, seamlessly connect the operation management with the site, and intelligently analyze the inspection data. Inspecting resources intensive management and control and scientific deployment.

In 2017, China Electric Power Research Institute selected the State Grid Hubei, Shanxi, and Jiangxi Power as pilot applications for promotion and application. Based on the existing UAV patrol control system, the patrol application center was established to carry out the deployment and application of the UAV patrol control system. Improve the duty center of the Chinese Academy of Electric Power.

The Chinese Academy of Electric Power and the Air Traffic Control Bureau of the Air Force Staff and its five major war zones established a regular consultation mechanism to facilitate the establishment of a strategic cooperation framework agreement between the Air Traffic Control Bureau of the Air Force Staff and the State Grid Corporation to provide management and technical support for the standardized use of airspace by all units of the company's systems. . On November 21, 2017, the Air Navigation Administration held the State Grid UAV Inspection Airspace Use Coordination Meeting in Beijing, the Air Traffic Control Office of the Eastern, Southern, Western, Northern and Central Air Force Staff, and the State Grid Corporation. Unit participation. This is of great significance for ensuring flight safety and promoting the regulation and healthy development of drones in the power industry. The Chinese Academy of Electric Power will set up a special team and invest in specialized personnel to do a good job in supporting the airspace management of the company's drone inspection.

Prospect of UAV Application in Power Grid Enterprises

Fully promote the core technology of drone operations. The drone inspection 100% covers all transmission lines, and the transmission line drone inspection control system covers 100% of all operation and maintenance units. Continuously improve the UAV operation management and technical standard system for transmission lines, improve the UAV sub-modules in the headquarters inspection and control system; expand the capacity and function of the data application center, and roll-up and update the inspection and maintenance operation modes in combination with the development trend of new technologies to achieve automatic Intelligent line operation and control.

Accelerate the cultivation of composite inspection personnel. Promote the continuous improvement of the drone training system. On the one hand, according to national laws and regulations and related policies, promote the basic skills training of drones, lay the foundation for legal compliance and unmanned aerial vehicle inspection; on the other hand, based on the need for power grid inspection Deepen the training of UAV job skills, effectively improve the comprehensive skill level of the inspectors, and promote the transformation of the traditional inspection team to the composite inspection team.

Promote the integration of artificial intelligence technology in the field of UAV systems. The UAV has the ability to intelligently control, integrate airspace and adapt to the environment, and can cooperate with command and control, collaborative situation generation and evaluation, and collaborative semantic interaction. At the same time, intelligent algorithms are used to intelligently analyze collected speech, text and images. The joint development of artificial intelligence and drones.

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