ABB’s giant transformers

2017-04-28 - The increasing demand in recent decades of ultra-high voltage (UHV) direct current (DC) transmission lines for high power transmission over very long distances (greater than 2000km) has driven the need to developing UHVDC converter transformers technologies.

ABB succeeded in developing and tested the world‘s first 1,100kV UHVDC converter transformer prototype, breaking the record for the highest DC voltage levels, in June 2012.

ABB is taking the process to the next level by building transformers for 1,100 kV systems. Test halls like this have physical dimensions which are sufficient for the next level in terms of voltage surges, but the equipment for insulation testing has to be upgraded. A high-voltage testing facility must ensure that testing does not affect the supply of power to the public and is itself not affected by outside disturbances.

ABB continues to demonstrate its leadership in transformer technology and project execution, and to develop innovative solutions to serve the existing global installed base. From the world’s first transformers for 400 kV and 800 kV AC transmission in the 1950s and 1960s respectively, to the most powerful UHVDC transformers for the 1,100 kV Changji-Guquan transmission link in China - ABB has broken the world record for the most powerful transformers on many occasions over the years.

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