Equipotential optical fiber unit for high-voltage photoelectric composite cable and preparation method thereof

Abstract

The invention discloses an equipotential optical fiber unit for a high-voltage photoelectric composite cable. Tube, semi-conductive plastic reinforcement, wire armor and semi-conductive plastic outer sheath. Each protective layer protects the electrical connection through metal and non-metallic materials, and each protective layer is equipotential. Under the action of the electric field of the power cable, there will be no potential difference between the metal and non-metallic protective layers, and the optical unit as a whole and other structures of the photoelectric composite cable also form an equipotential body, and other structures using the optical unit and the cable do not exist Potential difference, so that not only the optical unit itself will not cause breakdown due to excessive induced voltage, but also prevent breakdown between the optical unit and the high-voltage cable core, which ensures the safety of the optical unit and the cable body, and improves the safety of the cable. service life.

Description

technical field [0001] The invention relates to an equipotential optical fiber unit for a high-voltage photoelectric composite cable and a preparation method thereof, in particular to an equipotential optical fiber unit for a high-voltage photoelectric composite cable that is resistant to breakdown and does not generate potential differences and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's power grid construction, power optical fiber units used for power information transmission and control have been developed rapidly, such as power optical fiber unit overhead ground wire (OPGW), metal-free self-supporting power optical cable (ADSS) , Power optical cable (OPPC), etc. have been widely used in long-distance transmission lines and urban overhead lines. Optical fiber unit composite submarine cables across rivers, lakes and seas, submarine photoelectric composite cables for power supply on offshore oil plat...

AI Technical Summary

Problems solved by technology

However, due to the potential difference between the ordinary non-metallic optical unit and its surrounding cable structure, the induced voltage in the metal element in the optical fiber unit is too high, which may easily cause the breakdown of its protective layer, which not only affects the service life of the optical fiber unit, but also And there are unsafe factors for personnel and equipment

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