Monophase electric optical fiber embedded power cable

Abstract

The invention relates to a monophase electric optical fiber embedded power cable. The power cable comprises a single-copper-core cable conductor consisting of multiple strands of copper wires, an inner semiconductive wrapping band encircling the single-copper-core cable conductor, a conductor shielding layer wrapping the inner semiconductive wrapping band, an insulting layer coating the conductorshielding layer, a semiconductive water-proof layer wrapping the insulting layer and a sheath positioned outside the semiconductive water-proof layer; two semiconductive water-proof layers are provided; an optical fiber cable laid in a form of a sine wave is arranged between the two semiconductive water-proof layers; and the optical fiber cable comprises a reinforcing core made of fiber-reinforced compound material, a plurality of optical fibers adjacent to the reinforcing core made of the fiber-reinforced compound material, an aramid fiber layer encircling the reinforcing core made of the fiber-reinforced compound material and the plurality of optical fibers and a sheath sheathing the semiconductive water-proof layer. The power cable has the functions of optical fiber sensing and opticalfiber communication, improves the degree of intelligence obviously and provides a powerful technical measure for the failure prewarning, information communication and remote monitoring of the power grid and the like.

Description

technical field [0001] The patent of the invention relates to a special power cable, especially a single-phase electric optical fiber embedded power cable, which is used for 400v-35kv high, medium and low voltage power supply network lines. Background technique [0002] In the construction of smart grid, it is necessary to strengthen the technical means of early diagnosis and early warning of grid faults. Power cables are one of the most used components in power grid construction. It is also one of the most prone to failure parts. Once the power cable fails, it will cause power outage losses at different regional levels. Therefore, it is necessary to conduct online sensor monitoring for the temperature, stress, load, discharge, vibration and other conditions of the power cable in operation. However, the conventional power cables currently used cannot realize this intelligent detection function. [0003] At the same time, due to the current power carrier communication tec...

AI Technical Summary

Problems solved by technology

However, the metal conduit with high strength and small curvature radius may damage the insulation layer, thereby reducing the insulation strength

At the same time, it will also affect the electric field distribution state of the high voltage cable

[0007] On the other hand, the existing optical fiber cables also use ointment to fix the optical fiber, but in actual use, the ointment is easy to melt when encountering high temperature, which will cause adverse consequences to the optical fiber cable.

It will also affect the construction of cable joints

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