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Study on the pure DC transmission scheme for China's future power transmission from the West to the East

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2 Author(s)
Ying Huang ; Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China ; Zheng Xu

In the year after 2015, China's national power grid interconnection will have been completed. Most likely, there will be four synchronous power systems, that is, big East China power grids, central China power grids, South China power grids and Northwest China power grids. For the long distance (more than 1000 km) bulk power (more than 50 GW) transmission from the West to the East, if the pure DC transmission scheme is adopted, there will be more and more HVDC links feeding power to different points in the same synchronous AC network. An important issue arising in such a situation is the influence of the multiinfeed HVDC links on the security of the AC systems. This paper analyzes the transient stability of each system under various AC and DC disturbances. The recovery characteristics of the multiinfeed HVDC links are also investigated. The results show that pure DC power transmission from the West to the East of China is technically feasible

Published in:

Power Engineering Society General Meeting, 2004. IEEE

Date of Conference:

10-10 June 2004