With the total length of China's ultra-high voltage transmission lines exceeding one million kilometers and the continuous expansion of the power grid, the bottlenecks of the traditional inspection mode have become increasingly prominent, becoming a key factor restricting the safe and stable operation of the power grid. It takes 5 to 6 people working together for 3 to 4 hours to inspect 12 sets of tension clamps on one tower manually, which is extremely inefficient. If any are missed, it may cause a line trip, resulting in losses of tens of millions of yuan. In addition, complex lines such as quad-split conductors have problems with metal rings and conductor occlusion, making it impossible for ordinary equipment to capture the internal conditions. Moreover, complex scenarios such as remote mountainous areas and multi-circuit towers further increase the difficulty of inspection, urgently requiring an intelligent, efficient, and safe detection method to break through the industry's predicament and promote the transformation of power grid operation and maintenance towards intelligence.
Let's introduce the X-ray inspection system for transmission lines by HAI ZHUO. The device innovatively adopts a modular combination design, integrating drones, X-ray inspection equipment, automatic load-carrying release hooks, and line crawling devices. It can flexibly adapt to different split conductor styles and complex scenarios such as mountainous areas, hilly areas, "three-cross" lines, and four-circuit towers on the same tower. Especially in areas with dense conductors and complex electromagnetic environments, it can achieve precise operations through meticulous flight path planning, solving the industry's problem of traditional equipment's inability to adapt to complex lines. Some solutions adopt a "dual-drone split" collaborative operation, achieving synchronous and precise control of the X-ray emission and imaging receiving ends, improving the detection success rate in complex working conditions.
The unmanned aerial vehicle (UAV) X-ray inspection system breaks the traditional inspection limitation of "power-off and disassembly". By optimizing the power of X-ray equipment and the design of protection, and choosing insulating protective materials and anti-electromagnetic interference components, it can perform penetrating imaging on high-altitude crimping hardware without interrupting power supply. This not only avoids the impact of power outages on civilian electricity and industrial production, but also realizes non-destructive testing of internal hazards of hardware, solving the core contradiction between traditional inspection and power supply guarantee. It is estimated that it can save hundreds of millions of yuan in maintenance costs for the power grid every year.
In addition, the equipment is equipped with a high-resolution X-ray imaging system and noise reduction and image enhancement technologies, which can accurately capture hidden defects such as micro-cracks at the 0.1mm level and crimping diameter reduction. The defect recognition accuracy rate is as high as 98%. Even in harsh environments with wind force of level 5, it can still maintain a high image pass rate, achieving a leapfrog upgrade from "surface inspection" to "internal diagnosis" in power grid inspection. It provides precise data support for subsequent rectification and completely eliminates blind inspection.
