Space Charge Suppression Method of Insulation Layer of HVDC Cable Based on Semi‐Conductive Shielding Layer Modified by Nitrogen‐Doped Graphene

Space charge accumulation in the cable insulation will cause local electric field distortion, and accelerate the aging of the material. The inner semi‐conductive layer as an important structure of cable will affect the charge injection characteristics in the insulation layer. This work intended to explore the method of modifying the semi‐conductive layer with the Nitrogen‐doped graphene (NG) to suppress the charge accumulation utilizing the...