基于长距离BOTDR的OPGW融冰实时在线监测技术研究  

Research on Real-time and On-line Monitoring Technology of Ice-melting for OPGW Based on Long Distance BOTDR

作　　者：林睿[1] 朱一峰[1] 田霖[1] 周黎明 刘伟民 程凌浩 LIN Rui;ZHU Yi-feng;TIAN Lin;ZHOU Li-ming;LIU Wei-min;CHENG Ling-hao(EHV Power Transmission Company,China Southern Power Grid Co.Ltd.,Gangdong Guangzhou,51000,China;Institute of Photonics Technology,Jinan University,Gangdong Guangzhou,510632,China)

机构地区：[1]中国南方电网股份有限公司超高压输电公司,广东广州51000 [2]暨南大学光子技术研究院,广东广州5106321

出　　处：《新一代信息技术》2019年第24期56-61,共6页New Generation of Information Technology

基　　金：国家自然科学基金(项目编号:61875246)。

摘　　要：光纤复合架空地线(OPGW)的融冰过程缺乏实时在线的监测手段,因此,对OPGW光缆的温度变化进行实时预警和安全控制存在较大困难。为了解决该问题,本文提出了一种基于布里渊光纤时域反射仪(BOTDR)的方法,采用了宽带接收快速测量技术和分布式拉曼放大的技术,可以实现接近100 km的传感测量。本文还介绍了在南方电网超高压线路OPGW融冰过程中,基于该技术的实时在线温度监测实验。实验结果表明,在整个融冰过程中,OPGW光纤不同位置处的温度非常不均匀且变化迅速,温度变化差异大于40℃,表明了长距离实时温度监测的重要意义。Due to the lack of real-time and on-line monitoring of Optical Fiber Composite Overhead Ground Wire(OPGW)for the process of ice-melting,temperature early warning and safety control of DC in ice-melting process is difficult.Here we propose a Brillouin Optical Fiber Time-domain Reflectometry(BOTDR)with broadband receiving for fast measurement and with distributed Raman amplification for long distance measurement reaching 100 km.A field experiment for real-time and on-line temperature monitoring of ice-melting of OPGW is also reported.Dramatic difference of temperature changes greater than 40ºC over different positions of OPGW during ice-melting is observed.

关 键 词：布里渊光纤时域反射仪(BOTDR) OPGW融冰 分布式监测 拉曼放大 

分 类 号：TM76[电气工程—电力系统及自动化]