The ±800kV Xiangjiaba-Shanghai UHVDC link has the capacity to transmit up to 7,200MW of power from the Xiangjiaba hydropower plant in southwest China to Shanghai. ABB was the main technology supplier to State Grid Corporation of China (SGCC) and the project was completed in 30 months.
Zheng Baosen, executive vice president of SGCC, said: “The 800kV UHVDC will play an important role in providing China with access to remote renewable energy, a key focus area for us.”
ABB said that the high-capacity power link comprises a single overhead line and occupies less space than the existing system. The company 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 products delivered include thyristor valves, direct and alternating current switchyard equipment, and the newly developed DCC800 HVDC control system.
