State Grid Zhenjiang Power Supply Company pushes forward on hybrid power grid project during holiday

During this National Day and Mid-Autumn Festival holiday, many workers in various industries are still fighting on the front line. At construction sites in many parts of the country, builders are sticking to their posts and seizing the construction period to fully guarantee the progress of the project.

October is the "golden moment" for the construction of many major projects. At the site of the supporting line project of Yangzhou-Zhenjiang DC Phase II Project, the first demonstration project of high-voltage AC/DC hybrid power grid in China, more than 20 construction workers were carrying out tower erection and stringing operations in an orderly and tense manner, cranes accurately hoisted the tower sections assembled on the ground, and tensioning machines and tractors worked together, which was a busy scene.

Wang Lin, project manager of the Construction Department of State Grid Zhenjiang Power Supply Company, explained, "this project applies an innovative new DC power transmission technology and adopts advanced technologies such as three-dimensional visual disclosure and unmanned aerial vehicles to lay the guiding rope and speed up construction. The project is currently 70 percent complete."

As the first domestic demonstration project of a high-voltage AC/DC hybrid power grid, the second phase of the Yangzhou-Zhenjiang DC project adds approximately 228 kilometers of DC transmission lines to the existing power grid lines, and a new ±200 kV converter station is built at each of the sending and receiving ends. The project started construction last September and is expected to be put into operation next March. After being put into operation, it will further enhance the transmission potential of the existing cross-river transmission corridor and provide a solid guarantee for the energy supply in the Yangtze River Delta region.