Graphene composite high-semiconductive internal and external shielding impact-resistant medium-voltage power cable

The invention discloses a graphene composite high-semiconductive internal and external shielding impact-resistant medium-voltage power cable. The power cable comprises a conductor, a graphene conductor shielding layer, an insulating layer, a graphene insulating shielding layer, a semiconductive buffer layer, a metal shielding layer, a wrapping thermal insulation layer and an impact-resistant outer protection layer which are sequentially arranged from inside to outside. And the wrapping thermal insulation layer is wrapped outside the metal shielding layer. The graphene shielding material is adopted in the shielding layer, so that the appearance of the insulating wire core is smoother, generation of partial discharge is reduced, meanwhile, an electric field around the cable is more uniform, and the reliability and safety of cable operation are improved; through the design of the semi-conductive buffer layer and the anti-impact outer sheath, the anti-impact performance of the cable is improved, the operation sta