Qinghai Electric Power Maintenance Company completed the intermediate acceptance of Qing-Yu DC (Qinghai section) equipment

On December 19, Qinghai Electric Power Maintenance Company completed the intermediate acceptance of the ±800 kV Qinghai-Henan UHV DC project (Qinghai section) transmission line tower, strictly controlling the quality of the equipment before it was put into operation.

The ±800 kV Qinghai-Henan UHV DC project is my country's first UHV channel built specifically for the export of clean energy. The Qinghai section of the project starts from the Qingnan Converter Station in Qinghai Province and ends at the border between Gansu and Qinghai. The line passes through Gonghe, Guinan, Zeku and Henan counties, with a total length of 231.173 kilometers. A total of 433 towers have been built, passing through swamps, deserts, hills, mountains, etc., with an altitude of between 2,580 meters and 4,300 meters.

At present, the Qinghai-Henan DC (Qinghai section) has completed 98.61% of the tower foundation pouring, 79.21% of the tower erection, and 22.89% of the line stringing. Qinghai Electric Power Maintenance Company strictly controls the quality of equipment before it is put into operation, and reasonably arranges personnel to carry out intermediate acceptance of engineering equipment according to the progress of the project, timely discovers and eliminates hidden dangers, and improves quality awareness and the technical level of acceptance personnel.

The acceptance lasted for 8 days. Qinghai Electric Power Maintenance Company randomly inspected and accepted more than 100 completed towers, strictly checked the installation and quality of tower bolts, main materials, foot nails, rest platforms, etc., and promptly eliminated and rectified any problems found to ensure that the tightening rate of tower bolts met the requirements.