| 分布式光纤测温技术在电缆温度监测中的应用 |
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| 引用本文： | 刘媛,张勇,雷涛,苏美开,刘统玉.分布式光纤测温技术在电缆温度监测中的应用[J].山东科学,2008,21(6):50-54. |
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| 作者姓名： | 刘媛 张勇 雷涛 苏美开 刘统玉 |
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| 作者单位： | 1. 山东省科学院激光研究所,山东,济南,250014
2. 山东微感光电子有限公司,山东,济南,250014 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，山东省科技攻关计划项目 |
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| 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（OTDR）定位原理。以青岛供电公司二回三相4km长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℃，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。
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| 关 键 词： | 电缆温度 分布式光纤测温 拉曼散射 光时域反射 |
The Application of Distributed Optical Temperature Sensing |
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| LIU Yuan,ZHANG Yong,LEI Tao,SU Mei-kai,LIU Tony-yu.The Application of Distributed Optical Temperature Sensing[J].Shandong Science,2008,21(6):50-54. |
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| Authors: | LIU Yuan ZHANG Yong LEI Tao SU Mei-kai LIU Tony-yu |
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| Institution: | LIU Yuan,ZHANG Yong,LEI Tao,SU Mei-kai,LIU Tony-yu(1.Institute of laser, Shandong Academy of Sciences, Jinan 250014, China;2.Shandong Micro-sensor Photonic Limited, Jinan 250014, China) |
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| Abstract: | Distributed fiber optic temperature sensing （DTS） system is important in the surveillance of cable temperature. This paper presents the principles of the Raman back-scattering effect based temperature sensing and the OTDR （Optical Time-Domain Reflectometry） based positioning. We take the temperature surveillance system of a 4 km electrical cable of Qingdao as an instance, in which we present the selection of optical cable and system functionalities. Its temperature precision is ±1℃ and location accuracy is ±2 m so it provides the scientific basis for the surveillance of cable temperature and the safety of electric distribution. |
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| Keywords: | cable temperature DTS Raman back-scattering OTDR |
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