New UHVDC transformer bushings for record power transmission
Switzerland, Zurich: ABB has developed an UHVDC transformer bushing capable of handling 10,000 MW of direct current electrical power rated for 800 kV, which enables larger transmissions of power over longer distances.
Switzerland, Zurich: ABB has developed an UHVDC transformer bushing capable of handling 10,000 MW of direct current electrical power rated for 800 kV, which enables larger transmissions of power over longer distances.
This transformer bushing insulates the conductors that carry high-voltage current through a grounded enclosure, and is an essential component controlling electrical voltage, thermal current and mechanical stress, the manufacturer said in a statement.
The first project for this new technology will be the State Grid Company of China’s (SGCC), 1,609 km-long Ximeng-Taizhou and 1,231 km-long Shanghaimiao-Shandong 800 kV transmission links, where the bushings will enable delivery of 25 % more power from Inner Mongolia through the same narrow transmission corridor, increasing the power capacity of UHVDC long-distance transmission links.
According to the manufacturer, the extra power is equivalent to the output of 10 large-scale generation plants.
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