ABB commissions transmission link from Xiangjiaba hydro plant to Shanghai

Power and automation technology group ABB has announced the commissioning of the Xiangjiaba-Shanghai project, the world’s first ultrahigh-voltage direct current transmission link to go into commercial operation.

ABB was the main technology supplier to State Grid Corp. of China. The project was completed in 30 months, one year ahead of schedule.

The 800 kV Xiangjiaba-Shanghai UHVDC link has the capacity to transmit up to 7,200 megawatts of power from the Xiangjiaba hydropower plant in southwest China to Shanghai, which is about 2,000 kilometers away.

The link is the world’s longest and most powerful transmission link, ABB reported.

The new link is able to meet the electricity needs of about 24 million people, and sets a new benchmark in terms of voltage levels and transmission capacity, superseding the 600 kV (kilovolt) Itaipu transmission line in Brazil, which was also delivered by ABB.

“The Xiangjiaba-Shanghai link sets a new standard in ultrahigh-voltage power transmission and underlines ABB’s global leadership in HVDC technology,” said Peter Leupp, head of ABB’s Power Systems division. “We congratulate State Grid Corp. of China on this remarkable achievement and acknowledge the excellent cooperation and support of all our local partners.”

As part of the turnkey project, ABB was responsible for overall system design and supplied the main equipment. The scope of delivery included 28 high- and ultrahigh-voltage converter transformers, ten of which were delivered from Sweden and the rest manufactured with ABB components and technology, in local partnership.

Other key products delivered include thyristor valves, direct and alternating current switchyard equipment and the newly developed DCC800 HVDC control system.

Recently, ABB announced it has completed a comprehensive project to provide power equipment for the AmerenUE Taum Sauk pumped-storage hydro plant in Missouri.

ABB installed a complete integrated instrumentation, control and electrical (ICE) system package to help retrofit the AmerenUE 440-MW plant, allowing for improved functionality, reliability and modernization. The total project value was more than $11 million. 

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