On July 13, 2023, the Shandong section of the Longdong Shandong ± 800kV High-voltage direct current Project was officially started. The commencement of the line section marks the first start in the whole line.

The Longdong Shandong project starts in Qingyang, Longdong, Gansu and ends in Dongping, Tai'an, Shandong. The designed transmission capacity is 8 million kilowatts, with a total length of 926 kilometers, passing through five provinces: Gansu, Shaanxi, Shanxi, Hebei, and Shandong. This project is the first ultra-high voltage power transmission project in China that integrates wind, solar, and thermal energy storage. It is also a key three-year action project for building a green, low-carbon, and high-quality development pilot zone in Shandong Province. After the project is put into operation, it can provide over 36 billion kilowatt hours of electricity to Shandong every year, reducing carbon dioxide emissions by approximately 14.9 million tons.

The Shandong section of the line project passes through three cities and six counties of Liaocheng, Jinan, and Tai'an, with a newly built DC transmission line of 129.6 kilometers and 260 iron towers. The foundation of N2550 tower is located in Qiaowan Village, Liuji Town, Dong'e County, Liaocheng City. The cast-in-place Pile foundation is adopted, with a pile depth of 30 meters, a pile diameter of 2 meters, and a total earthwork of 384 cubic meters. The successful completion of the pilot work of the first foundation will further verify and improve the construction plan, standardize the construction process flow and on-site standardized layout, form safety and quality control measures and process standards with promotional significance, lay a solid foundation for the safe and high-quality construction of the entire section, and play a role of demonstration and leading, and model leading.

State Grid Shandong Electric Power requires all participating units to adhere to safety first, quality first, and promote engineering construction in a standardized and orderly manner. We will comprehensively promote the barrier free commencement of the project, strengthen the allocation of construction resources, set up the owner, construction and supervision project departments with high standards, strengthen the team of optimized personnel, comprehensively apply the mechanized equipment such as 360 degree rotary drilling rig and mountain micro pile drilling rig, innovate and apply new facilities such as intelligent balance arm holding pole, inverted umbrella safety net, and equip new equipment such as intelligent safety belt, high-altitude positioning module, and intelligent safety helmet to reduce Operational risk, Improve construction efficiency. Refresh the speed of engineering construction in Shandong with excellent performance, create a project management model in Shandong, and create safety and quality standards in Shandong. Editor/Xie Li