Ultrahigh-voltage composite cable for smart power grid and connection method thereof

Abstract

The invention relates to the technical field of wires and cables. The invention further discloses an ultra-high voltage electricity composite cable for the intelligent power grid. The composite cablecomprises a conductor shielding layer, a non-metal outer sheath layer and optical fibers, the inner side wall of the non-metal outer sheath layer is fixedly provided with an anti-corrosion layer in apasted manner, the inner side wall of the anti-corrosion layer is fixedly connected with a corrugated aluminum sheath layer, the inner side wall of the corrugated aluminum sheath layer is fixedly connected with a semi-conductive water-blocking tape layer, and the interior of the semi-conductive water-blocking tape layer is fixedly connected with an insulation shielding layer. A threaded support tube is added in the center of a cable conductor; the threaded supporting tube provides effective mechanical protection for the optical fiber and ensures the bending performance of the cable, so that the conductor joint of the photoelectric composite cable with the optical fiber arranged in the cable conductor becomes feasible, and the connection method successfully solves the technical problem of connection of the photoelectric composite cable with the optical fiber arranged in the cable conductor.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to an ultra-high voltage composite cable for smart grids and a connection method thereof. Background technique [0002] At present, power systems at home and abroad have generally used optical fiber to detect the real-time temperature distribution of the entire cable line, and to monitor the operating status of the cable system in real time, including real-time faults, cable operating status at different loads, ampacity analysis, and cable tunnel fire alarms. [0003] At the end of the 1990s in China, the optical cable was attached to the power cable to collect data on the operating temperature of the cable, such as figure 1 shown. This is the original Generation I technology. Obviously, since the power cable and optical cable are separated, external factors (airflow, sunlight, etc.) will affect the measurement accuracy, and maintenance is also inconvenient. [0004] Fro...

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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides an ultra-high voltage electric composite cable for smart grid and its connection method, which solves the problem that the existing conductor connection technology cannot solve the connection of the optical cable part

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