The invention discloses a cross-linked
polyethylene submarine cable and oil-filled
submarine cable transition joint and a repairing method, the cross-linked
polyethylene submarine cable and oil-filled
submarine cable transition joint comprises a connecting shell, the connecting shell is provided with an
epoxy resin prefabricated body, a
silicone rubber stress cone, an oil paper stress cone and a conductor connecting
pipe, the
epoxy resin prefabricated body is fixedly arranged in the connecting shell, and the
silicone rubber stress cone is fixedly arranged in the conductor connecting
pipe. The
silicon rubber stress cone is located at one end of the
epoxy resin prefabricated body, the oil paper stress cone is located at the other end of the epoxy resin prefabricated body, an epoxy bell-shaped opening is formed in the end, close to the oil paper stress cone, of the epoxy resin prefabricated body, and an oil way channel is formed in the epoxy bell-shaped opening. The center of the epoxy resin prefabricated body is provided with a conductor connecting
pipe, and two ends of the conductor connecting pipe are respectively provided with a crosslinked
polyethylene submarine cable interface and an oil-filled
submarine cable interface. Through cooperation of the epoxy resin prefabricated body, the
silicone rubber stress cone and the oil paper stress cone,
dielectric constant transition of different insulating medium interfaces can be optimized,
electric field distortion is reduced, the
partial discharge risk is reduced, and the electrical insulation reliability is guaranteed.