Optical fiber composite overhead phase line and system for distributed temperature and strain monitoring

Abstract

An optical fiber composite frame superterranean phase line for distribution type temperature strain detection comprises aluminum clad steel wires, bare fibers, single-mold tightly packaged optical fibers and aluminum wires, wherein the aluminum clad steel wires are located at the center of the optical fiber composite frame superterranean phase line and are stranded together, the bare fibers and the single-mold tightly packaged optical fibers are arranged inside pipe fittings, and the aluminum clad steel wires are stranded on the outer sides of the aluminum clad steel wires, the outer sides of the bare fibers, and the outer sides of the single-mold tightly packaged optical fibers. The bare fibers have redundant lengths, the number of the single-mold tightly packaged optical fibers is not less than two, and the single-mold tightly packaged optical fibers have no redundant length. The optical fiber composite frame superterranean phase line improves the monitoring level in a power transmission process, and guarantees safety of power transmission.

Description

technical field [0001] The invention relates to an optical fiber composite overhead phase wire and a system, in particular to an optical fiber composite overhead phase wire and a system for distributed temperature and strain monitoring. Background technique [0002] Optical Phase Conductor (OPPC for short) is a new type of special optical cable for power communication systems. It is an optical cable that combines optical fiber units in conductors in the traditional phase conductor structure. This kind of optical cable makes full use of the line resources of the power system itself, especially the power distribution network system, avoiding the contradictions with the outside world in terms of frequency resources, routing coordination, electromagnetic compatibility, etc., so that it has dual functions of power transmission and communication , so it has been widely used in power grid transmission lines in recent years. [0003] Optical fiber composite overhead phase line gene...

AI Technical Summary

Problems solved by technology

The Chinese patent application number CN201120020503.7 discloses an optical fiber composite overhead phase line with temperature measurement function. Due to the excess length of the optical fiber inside the optical fiber composite overhead phase line, when the traditional optical fiber composite overhead phase line is under a small force, the internal optical fiber is in a relaxed state, which cannot be used for distributed strain monitoring of the overhead phase line

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