The transmission capacity has now been doubled to 5000MW. With one pole operating at plus 800kV and the other at minus 800kV, the voltage difference between the poles reaches 1600kV DC.
Udo Niehage, CEO of power transmission division at Siemens Energy, said: “This has been an ambitious project including ground-breaking product developments and we have ultimately even managed to complete it ahead of schedule.
“With DC systems operating at ultra high-voltage levels we now have the transmission technology of the future in our portfolio. This technology is ideal for transporting clean, renewable power over thousands of kilometers to consumers – with nearly zero losses.”
The ecofriendly power totaling 5000MW, produced by several hydro power plants in the remote Yunnan Province, will be transported to the Pearl River delta in Guangdong Province with its megacities Guangzhou and Shenzhen, Siemens said.
Together with its Chinese partners, Siemens designed the HVDC system for the Yunnan-Guangdong project and developed and supplied the core components for the technology, which included 800kV and 600kV converter transformers, DC filters and all 800kV direct-current components.
