基于分布式光纤传感的光缆防外破监测研究

张均伟; 蓝波; 黄嘉庚; 谢晓华

doi:10.13756/j.gtxyj.2022.05.010

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基于分布式光纤传感的光缆防外破监测研究

光纤光缆技术与应用 | 更新时间：2023-01-29

- 基于分布式光纤传感的光缆防外破监测研究
- Monitoring and Early Warning System for Anti-breakage of Optical Cable based on Distributed Optical Fiber Vibration Sensing
- 光通信研究 2022年第5期页码：53-57
- 作者机构：
  
  广西电网有限责任公司柳州供电局，广西　柳州　545001
- 作者简介：
  
  张均伟，工程师。E-mail：gzdwwcy@163.com
- 基金信息：
  
  中国南方电网科技计划资助项目(GXKJXM20170320)
- DOI：10.13756/j.gtxyj.2022.05.010
  中图分类号： TM621
- 纸质出版日期：2022-10-10，
  
  收稿日期：2022-04-13，
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张均伟, 蓝波, 黄嘉庚, 等. 基于分布式光纤传感的光缆防外破监测研究[J]. 光通信研究, 2022,(5):53-57.

ZHANG Jun-wei, LAN Bo, HUANG Jia-geng, et al. Monitoring and Early Warning System for Anti-breakage of Optical Cable based on Distributed Optical Fiber Vibration Sensing[J]. Study on Optical Communications, 2022,(5):53-57.
张均伟, 蓝波, 黄嘉庚, 等. 基于分布式光纤传感的光缆防外破监测研究[J]. 光通信研究, 2022,(5):53-57. DOI： 10.13756/j.gtxyj.2022.05.010.

ZHANG Jun-wei, LAN Bo, HUANG Jia-geng, et al. Monitoring and Early Warning System for Anti-breakage of Optical Cable based on Distributed Optical Fiber Vibration Sensing[J]. Study on Optical Communications, 2022,(5):53-57. DOI： 10.13756/j.gtxyj.2022.05.010.

摘要

为进一步加强光缆的运行保护，实现光缆线行区域外力破坏隐患的实时监测，文章利用瑞利后向散射和相干检测原理，设计构建了一种基于分布式光纤振动传感的光缆外破事件监测预警系统。利用相位敏感光时域反射仪（Φ-OTDR）技术，实时采集光纤振动信号，提取振动传感关键性特征，并将隐患类型发送至运维工作人员，对外力破坏隐患进行实时定位和预警。现场验证结果表明：系统能够同时检测和定位沿传感光纤的多个振动源，可以识别出多种类型的扰动信号；该监测预警系统体系完善、架构简单，对各类施工信号的识别率高达95%，实现了外破类型和精确位置的双预警，能够有效预防并制止外力破坏事件。

Abstract

In order to further strengthen the operation protection measures of the optical cable and realize real-time monitoring of the hidden danger of external force damage in the optical cable line area

this paper uses the principle of Rayleigh backscattering and coherent detection to design and construct an optical cable external damage event monitoring based on distributed optical fiber vibration sensing early warning system. Using Phase Sensitive Optical Time Domain Reflectometer (Φ-OTDR) technology

the optical fiber vibration signal is collected in real time. The key characteristics of vibration sensing are extracted

and the type of hidden danger is sent to the operation and maintenance staff to locate and warn the hidden danger of external force damage in real time. Field verification results show that the system can simultaneously detect and locate multiple vibration sources along the sensing fiber

and can identify various types of disturbance signals. The monitoring and early warning system has a complete system and a simple structure. The recognition rate of various construction signals is as high as 95%. It realizes double early warning of the type of external breakage and precise location

which can effectively prevent and stop external damage events and improve the work efficiency of anti-external breakage of optical cables.

关键词

光缆防外破分布式光纤光纤传感监测预警破坏隐患

Keywords

anti-breakage of optical cablesdistributed optical fibersoptical fiber sensingmonitoring and early warninghidden dangers of damage

references

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