Research of Key Technologies for UHV Transmission

UHV transmission projects can suffice the quickly increased demand of electrical power in the future,and suffice the requirement of grids extenting and uniting with the sustaining development of power system in China. The present paper introduces the research actuality of the whole world on UHV transmission project. Accoring to the analysis of chinese actual conditions,the some technical problems in both 1000 kV UHVAC and ±800 kV UHVDC power transmission projects,including the problems of over voltage and insulation dependence,external insulation characteristics,electromagnetic environmental and the standards of UHV equipment's manufacture and test. Along with the come into being of the State Grid UHV AC test base and the State Grid UHV DC test base,the above problems can be correctly solved. Test results can be used to direct the designs and the constructions of UHV transmission projects in our countries.