ABB wins 800kV UHVDC grid deal

June 07, 2019 //By Nick Flaherty
ABB to supply converter transformers and high-voltage equipment for an 800kV ultrahigh-voltage direct current (UHVDC) transmission link in China’s Shaanxi and Hubei provinces
ABB has won a key order for an 800kV ultrahigh-voltage direct current (UHVDC) transmission link in China’s Shaanxi and Hubei provinces

The 1,100km UHVDC link will transport up to 8,000MW, enough to meet the needs of around eight million people in China as part of the State Grid Corporation of China (SGCC).

“The ultrahigh-voltage (UHV) transmission equipment from ABB is an important milestone in realizing SGCC’s vision of building stronger and greener grids. These UHVDC super-grids will enable the reliable integration of ever more power sources from remote areas into the power grids of urban centers,” said Claudio Facchin, President of ABB’s Power Grids business.

ABB will supply converter transformers that receive electricity from nearby power stations and increase their voltage to extremely high levels, in order to transport it over long distances and with minimal losses. Near to the end consumer, similar transformers will decrease the voltage in order to ensure distribution to the local grid. The high-voltage equipment in the deal includes breakers, which protect the grid from disruptive faults, and capacitor banks which improve the quality of the electricity supply, thus increasing the product lifespan and helping to reduce losses.

ABB was a key technology provider to SGCC’s first UHVDC transmission link. The 6,400 MW, 2,000km Xiangjiaba-Shanghai link provides hydroelectric power from South West China to Shanghai. Since then, ABB has worked with SGCC in several key projects.

At 8,000 MW transmission, the Shanbei-Wuhan link will be among the world’s most powerful and is an important step for SGCC in developing global UHVDC systems standards. UHVDC can have as much as 40 percent lower losses than an equivalent conventional AC system, saving up to 1.2 million tons of CO 2 emissions per year.

www.abb.com

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