Construction of the Lanlin 750 kV power transmission and transformation project has officially begun in Manping Village, Lintao County, Dingxi City. The project is a 2021 key project of Gansu Province, the first new energy project in Gansu during the "14th Five-Year Plan" period, and the 750 kV power grid project with the largest planned capacity in Gansu. It is of great significance for ensuring the safe and reliable operation of the Gansu power grid and consolidating the foundation of energy security. It is scheduled to be ready for energization and commissioning in December 2022.

　　The Lanlin 750 kV power transmission and transformation project is invested in and constructed by State Grid Gansu Electric Power Company with 920 million yuan. Located midway along the 750 kV transmission line from Haidong City, Qinghai to Lanzhou, the project involves building a new Lanlin 750 kV substation with a planned capacity of 4×2.1 million kVA (the largest substation planned and built in Gansu). The current phase will add main transformer capacity of 2×2.1 million kVA. Calculated on the basis of 5 kVA per household (using electric cooking, air conditioning and other household appliances), the current phase can meet the electricity demand of 840,000 ordinary households. Once completed, the project will add 4.2 million kW of transformation capacity, effectively solving the problems of heavy loading on multiple sections and excessive short-circuit current in the 330 kV power grid in central Gansu, providing strong power support for local economic and social development, and is of great significance for serving the "carbon peak and carbon neutrality" goals and promoting a clean and low-carbon transition. After the project is put into operation, it will effectively enhance the transmission capacity of hydropower from the Yellow River and wind power from Tongwei, advance the large-scale optimal allocation of clean energy, and effectively meet the load growth in central Gansu. A relevant person in charge of State Grid Gansu Electric Power Company said that during construction, State Grid Gansu Electric Power will rely on innovative management models, deepen the modular construction of substations, and deepen the application of advanced technologies such as the comprehensive digital management platform for the entire infrastructure process, 5G and the Internet, and BIM, to build a "management demonstration and green construction" project.