External force damage prevention early warning system of underground power cable based on optical fiber vibration sensing technology

Abstract

The invention discloses an external force damage prevention early warning system of an underground power cable based on an optical fiber vibration sensing technology. The system comprises an optical fiber vibration sensor assembly, a temperature and humidity sensor, a noise sensor, a sensing signal acquisition unit, a signal transmission unit and a monitoring and early warning platform, wherein the temperature and humidity sensor and the noise sensor are respectively connected with the signal transmission unit through the sensing signal acquisition unit; the optical fiber vibration sensor assembly is connected with the signal transmission unit; the signal transmission unit is connected with a microprocessor; and the microprocessor is connected with the monitoring and early warning platformthrough a wireless transmission module. The system also comprises an alarm unit, a comparison unit and a storage unit, wherein the alarm unit, the comparison unit and the storage unit are respectively connected with the microprocessor. The system has the advantages that the working principle is simple, the underground power cable can be monitored in real time, an alarm signal is sent immediatelybefore damage, and in addition, a damage position also can be positioned.

Description

technical field [0001] The invention relates to the technical field of power cable monitoring, in particular to an anti-external damage early warning system for underground power cables based on optical fiber vibration sensing technology. Background technique [0002] With the development of urban construction, modern cities require that there is no power cable line in the ground space, and the power cable into the ground becomes the only choice. However, there are loopholes in the connection between power cable operation and maintenance and urban construction departments, which lead to frequent accidents of power cable damage during road reconstruction, subway construction and various municipal engineering constructions, seriously endangering the safety of power grids and people's property. Through statistical analysis of high-voltage power cable accidents in recent years, it is found that external force damage is the main cause of power cable failure. Therefore, how to de...

AI Technical Summary

Problems solved by technology

However, there are loopholes in the connection between the operation and maintenance of power cables and the urban construction department, which leads to frequent accidents of power cable damage during road reconstruction, subway construction and various municipal engineering constructions, seriously endangering the safety of the power grid and the safety of people's property.

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