ABB LTD (ABB)

[The_Free_Nebula]

ABB successfully tests ultrahigh voltage transformer in China
It is reported that ABB has successfully tested a new type of transformer that is a key component of power superhighways, or power links that can deliver vast amounts of electricity over very long distances.

As per report, ABB developed the 800 kilovolt transformer within 1 year of winning a major order to equip the ultrahigh voltage direct current transmission corridor from the Xiangjiaba hydropower plant in western China to Shanghai. It is the world’s highest voltage power link and will have a record capacity of 6,400 MW, capable of supplying about 31 million people.

The transformer is the first of several ordered by the State Grid Corporation of China and is a critical element of the systems that ABB is supplying to convert AC current to DC and back and to alter the voltage at each end. Among other challenges, raising the voltage to as much as 800 kV increases the technical requirements on a transformer's insulation and on the design of critical parts such as bushings.

Mr Bernhard Jucker head of ABB’s Power Products division said that "The cooperation between ABB and SGCC has played a key role in this success, which is further evidence of ABB’s commitment to technology and innovation. UHVDC technology enables more efficient use of renewable energy sources, reducing dependence on fossil fuels and cutting carbon dioxide emissions."


http://steelguru.com/news/index/2008/12/29/NzY3ODg%3D/ABB_successfully_tests_ultrahigh_voltage_transformer_in_China.html