ABB’s 1,100 kV HVDC transformer passes tests

ABB has completed successful testing of the low and high voltage units of the world’s most powerful ultrahigh-voltage direct current (UHVDC) transformer.

The +/-1,100 kV UHVDC transformer, developed and manufactured in close collaboration with State Grid Corporation of China (SGCC), has successfully passed a series of type tests, paving the way for the implementation of the Changji-Guquan UHVDC link, which will transmit power from the Xinjiang region in the Northwest, to Anhui province in eastern China, the manufacturer said in the press statement.

Changji-Guquan, the world’s first +/-1,100 kV UHVDC link, will set a new world record in terms of voltage level, transmission capacity and distance. It will be capable of transporting 12,000 MW of electricity – the equivalent of 12 large power plants and 50 percent more than the +/- 800 kV UHVDC links currently in operation.

Transmission distance will be extended from around 2,000 km to over 3,000 km, enabling the integration and transmission of remote renewables on a much larger scale.

Source: ABB