The total length of the tala-Qingnan-Xining three-way power transmission project is 455.39 kilometers, with a total of 1020 tower bases. The interval between Xining and Tala substations will be expanded. Among them, Qingning Line ⅰ and Qingta Line ⅰ were put into operation first in June 2020, which was also the first time for uHV Qingnan converter station to access power. Subsequently, Qingning line ⅲ and Qingta Line ⅱ were put into operation.

It has laid the foundation for green electricity transmission of qingyu DC project.