China's State Grid Commissions Equipment Contract for New Power Link
State Grid Corp. of China has awarded ABB a $70-million order for power equipment for a new power link in northeastern China that will help the development of industry in the region.
The new HVDC (high-voltage, direct current) link will transmit 3000 MW (megawatts) of power over 920 km from Hulunbeir, in Inner Mongolia, to Shenyang in Liaoning province. The ABB order is part of a project with an estimated total value of $400 million.
The new DC power transmission link will run in parallel to an existing alternating current (AC) link, creating a so-called hybrid transmission corridor with a higher capacity and greater reliability. The proportion of power lost as heat into the atmosphere will also decline as DC links have smaller losses than AC over long distances.
ABB will provide key components for the converter stations at each end of the link, to switch AC to DC and then back to AC again, as well as measuring equipment for the converter stations. The link is scheduled for commercial operation in December 2009.
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