Pre-acceptance inspection completed for Shaoxing section of Gansu-Zhejiang UHV Project

The pre-acceptance inspection of the Shaoxing section of the Gansu-Zhejiang ultra-high voltage (UHV) transmission project was completed on Aug 18. Traversing the three districts and counties of Shaoxing (Zhuji, Keqiao, and Shangyu), this section serves as the final step for clean energy transmitted from Gansu into Zhejiang. The inspection campaign lasted 31 days and covered a total of 206 transmission towers and 98.5 kilometers of lines.

Given the complex terrain and scattered tower locations, the inspection team adopted a dual-track approach combining UAVs and manual inspections, with cross-verification between the two methods.

A ground-level survey was conducted on line corridors, tower foundations, newly installed conductors, insulator strings, fittings, as well as auxiliary facilities such as vibration dampers and spacers. Each tower and each component were examined to check for missing tower bolts, verify fastening compliance, and ensure the proper installation of accessories.

Any identified issues were marked on-site, photographed to keep a record, and logged item by item according to pile numbers. The problem list was updated throughout the process, and rectification efforts were advanced to ensure the quality of line commissioning.

In the next phase, the inspection team will continue to push forward defect remediation and carry out re-inspections, ensuring the line enters service with zero defects and that the project is connected to the grid as scheduled. This will facilitate the transmission of green electricity from the Gobi Desert of the Hexi Corridor all the way to the water towns south of the Yangtze River, lighting up countless homes.

The Gansu-Zhejiang UHV project is a key clean-energy corridor under China's "west-to-east power transmission" strategy. Originating from the Gansu energy base and terminating at the Zhejiang load center, the line stretches 2,370 km in total.

Upon commissioning, the project will deliver over 36 billion kilowatt-hours of green electricity to Zhejiang annually, alleviating the province's power supply-demand pressure during the summer peak season.

It holds strategic importance for promoting the high-quality integrated development of the Yangtze River Delta region and supporting the achievement of China's dual carbon goals, while also injecting strong momentum into the development of new power systems and the green, low-carbon transformation of the economy and society.