ABB’s Power Grids business has won several major orders to supply advanced HVDC converter transformers and high-voltage equipment for three 800 kV ultrahigh-voltage direct current (UHVDC) transmission links owned by the State Grid Corporation of China. The links will help in integrating hydro, wind and solar power generation, whilst reducing CO2 emissions. Financial details were not disclosed.

“We are glad to see a recovery in demand … as the Chinese economy gradually returns to normality following the COVID-19 outbreak. Ultrahigh-voltage electricity transmission, enabled by pioneering technologies from ABB, is a critical element of China’s vision of stronger and greener grids” said Claudio Facchin, president of ABB’s Power Grids business.

The transmission links will be among the world’s most powerful. Each will transport up to 8000 MWe. The 1700 km Yazhong-Nanchang link is part of China’s West-East Electricity Transmission initiative. It helps the hydro-resource-rich Sichuan Province, in Southwest China, to transmit green energy to the load centre of Jiangxi Province in East China. Once complete, the project is expected to reduce coal consumption by approximately 16 million tons a year and save the release of 40 million tons of CO2.

The 1100 km Shaanbei-Wuhan link marks an important step for SGCC in developing global UHVDC systems standards. And the 1500 km Qinghai-Henan project is a UHV channel specially designed for the transmission of clean energy, including solar and wind power.

ABB Power Grids will provide key technologies including HVDC converter transformers, components such as wall bushings, capacitor banks, dead tank breakers and HVDC switches.

ABB’s Power Grids business was a key technology provider to SGCC’s first UHVDC transmission link, the 6400 MW, 2000 km Xiangjiaba-Shanghai line, which provides hydroelectric power from South West China to Shanghai.