应用布里渊传感技术监测电缆绝缘老化  

Study of the application of brillouin scattering in the cable insulation fault monitoring

作　　者：张硕[1] 李永倩[1] 

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003

出　　处：《光通信技术》2008年第10期49-52,共4页Optical Communication Technology

基　　金：863计划课题(2006AA09Z141)资助;教育部留学回国人员科研启动基金(教外司留[2005]383号)资助;华北电力大学留学回国人员科研基金(20041401)资助

摘　　要：分析了地下电缆绝缘老化机理,给出了光纤布里渊温度和应变分布同时测量原理。针对地下电缆绝缘老化故障点附近出现高温、高应变的现象和现有监测方法存在的问题,在比较几种现有布里渊测量方案的基础上,设计了基于布里渊光时域反射技术的地下电缆绝缘老化在线监测系统,并对系统的监测方法和组网方式进行了探讨。The mechanism of insulation fault in underground cable and the principle of simultaneous measurement of temperature and strain distribution utilizing Brillouin scattering in optical fiber are analyzed in this paper. To solve the problems of existing insulation fault detection methods, a system for on-line insulation fault monitoring of underground cable based on Brillouin optical time domain refiectometry is proposed and designed according to the fact of temperature and strain increase near fault points and a comparison among several main Brillouin-based sensing schemes. The monitoring method and network architecture are discussed, which shows the feasibility and application prospect of the system in power industry.

关 键 词：光纤传感 温度测量 应变测量 地下电缆 绝缘老化 

分 类 号：TM247[一般工业技术—材料科学与工程] TM25[电气工程—电工理论与新技术]