HVDC transmission technologies at the frontier

Long distance, bulk power transmissions are the developing trend for power grids in China. HVDC transmission technology will take the key role in long distance, bulk power transmissions. The studies on the top end technologies of HVDC transmission are very important for construction of key transmission projects as well as stable operation of power systems in China. Based on the applications and studies of HVDC transmission technologies in China Southern power system, the research work on HVDC transmission technology and operation technologies of hybrid AC/DC power systems, ongoing studies and corresponding results on key technologies of HVDC transmission project and UHVDC technologies were introduced. The applications of research results in China Southern power system are demonstrated.