文档介绍：1
第 21卷第 6期山东科学
2008年 12月 SHAND0NGSCIENCE
文章编号:1002-4026[2008)06-0050-05
分布式光纤测温技术在电缆温度监测中的应用
刘媛,张勇,雷涛,苏美开,刘统玉
(,山东济南 250014;,山东济南 250014)
摘要:分布式光纤测温系统在电力行业电缆温度监测中发挥着重要的作用。本文介绍了光纤拉曼散射测温基
本原理和基于光时域反射(~rroR)定位原理。以青岛供电公司二回三相km长 4 电缆温度监测工程为例,介绍
了光缆的选择、系统功能和监测情况。经综合分析,系统温度精度为±1 oC,距离定位精度±2m,为电缆温度
实时监测和输电安全提供了科学依据。
关键词:电缆温度;分布式光纤测温;拉曼散射;光时域反射
中图分类号: 6 文献标识码:A
TheApplication ofDistributed Optical Temperature Sensing
Technology in the Surveillance ofElectrical Cable Temperature
LIU Yuan ,ZHANGYong2 LEI Tao。,SU Mei—kai
, , LIU Tony—yu
( oflaser,ShandongAcademy ofSciences,Jinan250014,China; (
Micro-sensor Photonic Limited,Jinan 250014,China) Photonic Micro-sensor
Abstract:Distributed fiber optic temperature sensing(DTS)system is important in the surveillance of of sensing(DTS)system surveillance the temperature in optic important fiber is Abstract:Distributed
cable temperature. This paper presents the principles of the Raman back—scattering effect based
temperature sensing and the OTDR(Optical Time—Domain Reflectometry)based take the the (Optical take the andTime—DomainReflectometry)based sensing temperature
temperature surveillance system of a 4 km electrical cable of Qingdao as an instance,in which we pres