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World’s Most Powerful Transformer Bushing Tested

May 31, 2017

ABB has successfully type-tested the 1,100 kV direct current (DC) transformer bushing developed for the ultra-high voltage direct current (UHVDC) transmission link project in China.

According to the manufacturer, this is the world’s most powerful DC bushing, and its first application will be for the UHVDC converter transformers used in the Changji-Guquan UHVDC transmission link in China, which will transmit 12,000 MW of hydro-generated electricity at 1,100 kV DC over a distance of3,000 kilometres.

The bushing is 40 percent longer, three times heavier and has a 30 percent larger diameter than the 800 kV DC bushing.

Source: ABB