Siemens sets up largest power transmission system
Dec 30,
2009 - CommodityOnline.com ERLANGEN (Commodity Online):
Siemens Energy and the utility China Southern Power Grid have set up world most
powerful high-voltage direct-current transmission system (HVDC) with a transmission
capacity of 5000 MW covering a distance of more than 1400 km from Yunnan to Guandong. At
the same time it is the first HVDC link operating at a transmission voltage of
800 kilovolts (kV). Siemens is thus setting new benchmarks in energy-efficient
transmission of ecofriendly electricity. Commissioning of the second pole and
thus startup of the entire system is scheduled for mid-2010. China has
raised the DC voltage of its new long-distance HVDC links to 800 kV in order to
further reduce transmission losses and to be able to bridge even greater distances.
For example, the ecofriendly, CO2-free power generated by several hydro power
plants will be transported with low-loss transmission via the new 800-kV HVDC
link to the rapidly growing industrial region in the Pearl River delta in Guangdong
Province with its megacities Guangzhou and Shenzhen. This high-efficiency HVDC
system can reduce annual CO2 emissions by over 30 megatons, which would otherwise
have been produced by additional fossil-fueled power plants linked to the interconnected
grid in Guangdong Province. Buy and sell commodities online “Successful
commissioning of the first pole of currently the world’s most powerful HVDC system
shows that our efforts to get 800-kV HVDC technology ready for concrete projects
have paid off. As technology leader in this field we have thus set new benchmarks,“
said Udo Niehage, CEO of the Power Transmission Division of Siemens Energy. Together
with its Chinese partners Siemens designed the entire HVDC system for the Yunnan-Guangdong
project and supplied the core components, which included 800-kV and 600-kV converter
transformers, DC filters and 800-kV direct-current components. Energy-efficient,
high-voltage direct-current (HVDC) transmission systems for low-loss transmission
of large quantities of power over long distances are part of Siemens’ Environmental
Portfolio. In fiscal 2009, revenue from the Portfolio totaled about EUR23 billion,
making Siemens the world’s largest supplier of ecofriendly technologies. In the
same period, our products and solutions enabled customers to reduce their CO2
emissions by 210 million tons.(Webwire) | 
