It is learnt that on the morning of 12 successfully completed two tests, has been completed and the ultra-high voltage AC-DC outdoor test site, UHV double-circuit line and DC test UHV TAC DC Corona cages have created 10 first in the world, these records also including the double-circuit tower line test voltage DC test the highest in the world, with the double-circuit tower DC test the world's longest segment, structural and electrical parameters regulating the widest range of ultra-(UNSCOM) the entire voltage DC high voltage test segment, the world's largest double-box UHV-TAC DC Corona cage, 7200 KV impulse voltage test equipment and test capacity first in the world, and the impact of voltage DC insulation test stacking capability first in the world, ultra-high voltage DC test base DC electromagnetic environmental testing research function first in the world. UHV DC test base AC-DC insulation test research capabilities, first in the world, and has made 23 major technological innovations.

At present, ultra-high voltage test hall, the ultra-high voltage insulator arrester and tension is building laboratories, can simulate high altitude and filthy, Icing, artificial rainfall (fog), and other special environmental conditions in UHV filthy and Environmental Laboratory has also started construction, UHV test transformer is already in place. UHV DC test base upon completion, will create 17 first in the world to achieve world-class level. In the functional design, equipment development, control and test technology and engineering applications will be made 46 major technological innovations, to be practical applications for invention patents, and more than 50 new patents.