With the continuous improvement of the county power grid in Yinchuan, Ningxia, the number of transmission lines is growing rapidly, and the requirements for equipment operation and maintenance are also improving. In order to cope with the contradiction between the rapid growth of the main power grid of transmission lines and the continuous lack of operation inspection personnel, and solve the problems of low efficiency and limited means of manual inspection, State Grid Ningxia Yinchuan power supply company accelerated the construction of UAV intelligent operation inspection system, strengthened the visual construction of transmission channels, and spared no effort to create a new lean operation inspection mode of "three-dimensional inspection + centralized monitoring" for transmission lines.
The overhead transmission line inspection plan is usually created in the mode of "one line one way". However, in the actual production and operation environment, a line often crosses towns, suburbs, military management areas, no fly zones and clearance restricted areas. The previous inspection methods can not meet the requirements of lean operation and maintenance. To this end, the transmission operation inspection center of State Grid Ningxia Yinchuan Power Supply Company, based on the transmission panoramic intelligent management and control platform, integrates UAV, mobile terminal and channel visualization, carries out data interaction, and transforms the original inspection mode into three-dimensional inspection.
(The picture shows the daily patrol inspection by the staff of the transmission operation inspection center)
"Through the panoramic monitoring platform of the power transmission line, we once found that the foreign matters on the No. 22 tower of the 110kV Jisha line under our jurisdiction might endanger the safe and stable operation of the line, so we immediately informed the maintenance personnel to rush to the site with laser foreign matter removal equipment to eliminate potential safety hazards." Cunwei Sun, the operation and maintenance personnel of the transmission operation inspection center of State Grid Ningxia Yinchuan Power Supply Company, said that in the past, the external breaking points were all manually crouched, which took time and effort with little effect. Now there is an electronic "thousand mile eye", which can access the line operation condition information at any time and check the line defects.
(The picture shows the staff of transmission operation inspection center using UAV for line inspection)
For regions with different attributes, relying on the transmission line panoramic monitoring platform for big data analysis, you can obtain online the work task information of the whole process of operation and maintenance, make overall arrangements for various work plans with the help of intelligent reminder and auxiliary decision-making functions, and realize real-time tracking and remote control of work progress with the help of mobile terminals. In addition, it can optimize the mode of manual, UAV and visual inspection, adjust the line inspection cycle floating, and formulate differentiated inspection strategies according to the inspection cycle, so as to improve the inspection efficiency and ensure the safe and stable operation of the transmission line.
In addition to the overhead line channel, the cable channel has gradually formed a lean operation and maintenance mode of "three-dimensional inspection + centralized monitoring". In combination with the overall requirements of creating a domestic first-class high-voltage cable lean management demonstration city and the three-year action plan for high-voltage cables, State Grid Ningxia Yinchuan Power Supply Company fully integrates various existing resources and information and digital construction achievements, promotes the integration of advanced information technology and high-voltage cable inspection business, and builds a smart cable demonstration area and cable lean management platform based on the mode of "three-dimensional inspection + centralized monitoring".
(The picture shows the panoramic display of the cable lean management demonstration platform)
Today, the cable lean management platform has been equipped with five typical digital scenarios, namely, "man-machine collaboration + intelligent assistance" standardized patrol inspection, "all-weather three-dimensional visualization + grid standard patrol inspection" cable anti external damage control, "intelligent analysis + active early warning" defect whole process closed-loop processing, "differentiated online perception + rapid emergency response" intelligent maintenance strategy, and "three-dimensional modeling + flow sharing" pipeline digital management, Through the application of new technologies such as monitoring and sensing, information communication, data fusion, edge computing, etc., further promote the load reduction and efficiency improvement of cable inspection, and improve the digital level of cable inspection.
In combination with the construction of new power system and the goal of cable digitalization transformation, State Grid Ningxia Yinchuan Power Supply Company continued to deepen the application of UAV, visualization, robot, intelligent terminal, mobile terminal and other equipment to improve the professional modern equipment management system of transmission lines, and explored the lean operation and maintenance mode of "three-dimensional inspection + centralized monitoring", which can be used for reference and copied, to help the safe and reliable operation of transmission lines, Provide strong support for urban economic development.
