December 31, 2016, China West for Jiuquan - Hunan ± 800 kV UHV DC transmission project developed seven ± 400 kV converter transformer, seven ± 200 kV converter transformer. This 14 sets of products is the first time to undertake the west side of China's 750,000 volts, the valve side ± 400 kV (± 200 kV) voltage level converter transformer, is the current domestic capacity (412.3 MVA) the largest converter transformer , The performance indicators to meet or better than national standards and technical agreement requirements, technical level reached the international advanced level, and promote the domestic DC equipment manufacturing technology upgrades and leapfrog development, to achieve the commutation transformer production of mass production.

Jiuquan - Hunan ± 800 kV UHV DC transmission project construction, designed to further meet the development of Jiuquan wind power transmission base and the rapid growth of electricity demand in Hunan, for the promotion of clean energy scale development, optimization of coal development pattern, the resource advantages Into economic advantages, promote low-carbon economy, the implementation of national energy strategy is of great significance.

China West as the domestic 750,000 volts voltage transformer production the earliest, the largest number, the most experienced operating experience of the manufacturers, as early as 2012, China West to complete the 750 kV outlet device development, the project has laid a good implementation Practical basis. At the same time, China West Electric has a number of key projects for the country to provide a converter transformer, leading China's AC-DC power transmission equipment manufacturing development.