Guyuan, Ningxia Upgrades, Commissions 110 kV Power Grid Main Artery

On January 8, with the successful energization of the 110 kV Lvjiang II Line, the 110 kV "Jiangtai-Yuhe π-connection" Project, undertaken by State Grid Ningxia Guyuan Power Supply Company, was officially completed and put into operation. This project provides a solid foundation for supporting regional economic and social development, facilitating comprehensive rural revitalization, and ensuring a reliable power supply in the area.

The project involves a total planned investment of 148 million yuan and officially commenced construction on August 23, 2024. Originating from the 330 kV Lvyuan Substation, the line connects to the existing 110 kV Jiangyu Line via a π-shaped tap-in connection. The newly constructed line spans a total length of 88.673 kilometers and involves the erection of 295 transmission towers.

As the largest single-investment transmission project undertaken by Guyuan Power Supply Company to date—featuring the greatest number of tower foundations, the highest construction altitude, and the most challenging construction conditions—the line traverses four regions: Zhangyi Town in Yuanzhou District, Jingyuan County, Longde County, and Xiji County. It passes through complex areas such as the Liupan Mountain Range, Qingshi Forest Farm, and Xihaizi Forest Farm, with elevations ranging from 2,000 to 2,800 meters. Rugged terrain, deep valleys, and a harsh climate posed multiple challenges to the construction.

In the face of these difficulties, power grid builders upheld the spirit of the "Power Grid Iron Army," characterized by a strong sense of responsibility, endurance in hardship, fighting spirit, and dedication. They overcame extreme cold and heat as well as complex terrain to ensure steady progress of the project.

Throughout construction, the company adhered to the philosophy of "scientific management, technological leadership, model-driven guidance, standardized construction, and achieving excellence on the first attempt." A detailed construction "battle plan" was formulated, with a reverse scheduling approach implemented through re-optimized timelines. A management mechanism featuring daily tracking, weekly coordination, and focused supervision at key milestones was established. Party members and cadres took the lead in tackling technical challenges, while all construction personnel worked together to strictly strengthen safety management, quality supervision, progress coordination, and environmental protection. Based on the geographical characteristics of the Liupan Mountain area, specialized construction plans were developed, successfully overcoming difficulties related to multiple line crossings, major transportation routes, and complex terrain, thereby promoting high-quality project delivery.

During construction, the project fully implemented the "Six Refinements and Four Modernizations" requirements, guided by the principles of standardization, mechanization, green development, and intelligence. Technological innovation was integrated throughout the entire construction process. Advanced technologies—including heavy-load UAV material transportation, UAV stringing, cableway construction, gin-pole tower erection using internal suspension and external guy wires, and intelligent visual tension stringing—were widely applied. Through pilot projects for initial foundation construction and the promotion of model-based practices, the project was built into a high-quality, green, standardized, and demonstration transmission project.

Following its commissioning, the project will further optimize the power grid structure in the Guyuan region, significantly enhance clean energy transmission efficiency, and effectively meet the growing power demand from local "coal-to-electricity" initiatives, thereby injecting strong momentum into high-quality regional economic and social development. (By Ma Yunsheng, Bie Yaxiong)