摘要
光纤复合架空地线(OPGW)接续杆塔与断纤的准确定位对于电力通信网络运行维护具有重要意义。目前OPGW光缆故障定位普遍采用光时域反射仪(OTDR)测量断点距离及衰减信息,由于OTDR测量结果为光纤长度,无法与杆塔明细表中记录的物理距离一一对应,且OTDR在长距离测量时受限于空间分辨率,无法实现光纤接续点、断纤与物理杆塔的准确对应,故提出一种利用多根纤芯布里渊频移跳变和引下线处布里渊频移特征实现OPGW光缆接续杆塔精准定位的方法。通过比对断纤与完好纤芯的布里渊频移,实现了光缆故障的精准定位。同时,本文提出的方法在实际OPGW线路运维工作中得到了初步应用,实现了OPGW光缆接续杆塔及故障纤芯的精准定位,为电力OPGW光缆的精细化运维提供了新的技术支撑手段。
The accurate location of optical fiber composite overhead ground wire(OPGW) connection towers and fiber breakpoints is of great significance to the operation and maintenance of power communication networks. At present, during OPGW fault location, the optical time-domain reflectometer(OTDR) is generally used to measure breakpoint distances and attenuation information. Since the OTDR measurement result is fiber length, which does not correspond to the physical distance recorded in the tower schedule. In addition, the OTDR is limited by the spatial resolution when measuring long distances, making the fiber connection points and fiber breakpoints do not correspond to the towers. In response, this paper proposed a method that used the Brillouin frequency shift hopping in multiple fiber cores and the characteristics of the Brillouin frequency shifts of the downleads to achieve precise location of the OPGW connection towers. Precise OPGW fault location was achieved by comparing the Brillouin frequency shifts of the broken fiber cores and the intact fiber core. Moreover, the method proposed in this paper has been initially applied in actual OPGW line operation and maintenance. As a result, precise location of the OPGW connection towers and the faulty fiber cores have been achieved. This study provides a new technical support method for the refined operation and maintenance of the OPGW.
作者
夏猛
汤晓惠
王颖
张书林
姜辉
张琦
董永康
Xia Meng;Tang Xiaohui;Wang Ying;Zhang Shulin;Jiang Hui;Zhang Qi;Dong Yongkang(National Key Laboratory of Science and Technology on Tunable Laser,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China;Real Photonics Co.,Ltd.,Anshan,Liaoning 114000,China;State Grid Information&Telecommunication Branch,Beijing 100761,China;Heilongjiang Provincial Key Laboratoq of Quantum Manipulation&Contwl,Harbin University of Science and Technology,Harbin,Heilongjiang 150080,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2021年第19期81-88,共8页
Acta Optica Sinica
基金
国家重大科学仪器开发专项(2017YFF0108700)
国家电网有限公司总部科技项目资助。
关键词
光纤光学
接续杆塔定位
断纤分析
光纤复合架空地线
fiber optics
connection tower location
fiber breakpoint analysis
optical fiber composite overhead ground wire