摘要
With the development of DC power transmission and dis-tribution technology,power equipment such as converter transformers,DC cables,and DC gas-insulated equipment has been widely used in the power grid.In addition,with the growing attention of hybrid and all-electric vehicles including electric aircraft and electric ship in commercial transportation and military industry,the stability of the propulsion system driven by DC voltage has become a great concern in recent years and will continue drawing much more attention in the near future.
