Study on the pure DC transmission scheme for China's future power transmission from the West to the East
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
Bibliography of HVDC 2004-2005 IEEE working group report
This paper presents a bibliography of HVDC transmission technology for the year 2004-2005. It provides a listing of various journal and conference papers in this area
Using Skills from Art in Surgical Practice and Research-Surgery and Art
Many aspects of surgery and the arts are inexorably linked together, and the use of artistic techniques or ideas to improve surgical practice is present throughout the history of medicine. In all forms of surgery, throughout the ages, artists have been used to illustrate new ideas, new techniques and to document surgical practice. Some of the most successful art originated from surgeons who were also artists; perhaps due to their innate understanding of what they were portraying. Studying art and developing creative skills can enhance modern surgical practice in many different ways.