Optical fiber composite overhead ground wire with fast ice melting function

Abstract

The invention provides an optical fiber composite overhead ground wire with a fast ice melting function.While fast ice melting is ensured, a product does not need to be repeatedly wired in the ice melting process, and meanwhile compared with ice melting of a traditional ground wire, induction voltages are reduced, and the problems that during overhead ground wire ice melting, operation is complex, and induction voltages are high are solved.The optical fiber composite overhead ground wire comprises an inner core structure and an outer-layer conductor.The inner core structure is arranged in a cavity formed by the outer-layer conductor and comprises a light unit and a metal stranded wire.The light unit and the metal stranded wire are stranded to form an outer layer of the inner core structure.A non-inductive twisted pair is arranged in a cavity formed by stranding the light unit and the metal stranded wire, external ports are formed in the non-inductive twisted pair by being spaced by a certain distance, the two external ports are connected, and alternating currents are introduced.A circuit loop can be formed by the position, between the two external ports, of the non-inductive twisted pair and is powered on to generate heat, and the heat is transferred to the surface of the wire to smelt coating ice.

Description

technical field [0001] The invention relates to the technical field of overhead power transmission lines, in particular to an optical fiber composite overhead ground wire with the function of rapidly melting ice. Background technique [0002] Optical fiber composite overhead ground wire (OPGW), as a special power cable, integrates the functions of optical fiber communication and transmission line lightning protection, and is the main component of the power communication system. Icing is a widely distributed natural phenomenon that mostly occurs in winter and early spring. Under the condition that the ambient temperature is close to freezing point, -5-0°C, the wind speed is 1-15m / s, and the air humidity is not lower than 85%, the precipitation caused by the intersection of cold and hot airflow will produce icing. In addition, it is in a "supercooled" state The water droplets freeze to form ice on the surface of the conductor. The frequency of icing is high in the distributi...

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Problems solved by technology

[0003] In view of the above problems, the present invention provides an optical fiber composite overhead ground wire with the function of fast melting ice, which ensures fast melting of ice and at the same time eliminates the need for repeated wiring in the process of melting ice. Compared with the traditional ground wire melting The induction voltage is reduced in the ice, which solves the problem of high induction voltage and complicated operation when the overhead ground wire melts ice

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