Testing device and method for measuring parallel influence of conventional cable on superconducting cable

The invention discloses a test device for measuring the parallel influence of a conventional cable on a superconducting cable. The test device at least comprises a superconducting cable sample cable device, a modularized parallel conventional conductor and a high-capacity direct-current power supply. The superconducting cable sample cable device comprises a superconducting cable body and superconducting cable terminals at the two ends of the superconducting cable body, and the superconducting cable body is horizontally and straightly laid; the modularized parallel conventional conductor comprises a plurality of conventional conductor single modules, and the adjacent conventional conductor single modules are connected in series through a connector. The modularized parallel conventional conductors and the superconducting cable body are arranged in parallel and at the same height; and the high-capacity direct-current power supply is respectively connected with the superconducting cable sample cable device and th