基于光纤光栅应变传感器的架空输电线弧垂实时监测  

Real-time Monitoring Scheme of Sags on Power Transmission Lines Based on FBG Strain Sensors

作　　者：李路明[1] 孟小波[2] 张治国[2] 孙欣[1] 陈雪[2] 张民[2] 

机构地区：[1]江西省电力公司信息通信中心,南昌市330029 [2]信息光子学与光通信教育部重点实验室(北京邮电大学),北京市100876

出　　处：《电力建设》2011年第7期51-54,共4页Electric Power Construction

基　　金：江西省电力公司重大课题(200950801;200950802)

摘　　要：利用光纤的应变与Bragg波长的对应关系,分别得出了架空输电线悬点等高以及不等高条件下的输电线弧垂计算方法;提出了一种基于光纤布拉格光栅(fiber Bragggrating,FBG)应变传感器的架空输电线弧垂实时监测方案,通过监测线路的应变值,可以获得线路的实时弧垂值。仿真计算结果表明,本方案可实时监测10m以上的弧垂变化,且能够支持16mm的弧垂测量精度,具有较高的工程应用价值。According to the relationship between fiber strain and Bragg wavelength,the calculation methods of sags are obtained under the conditions of isoheight and non-isoheight suspension center of overhead transmission line.A real-time monitoring scheme of sags on power transmission lines based on fiber Bragg grating（FBG） strain sensors is proposed.As a result,the real-time sag values can be determined by the strain of the monitoring lines.It is shown from the simulation that the scheme is applicable to the real-time monitoring of sag variation more than 10m,and the accuracy of measurement reaches to 16 mm,which has excellent feasibility in the project application.

关 键 词：FBG传感器 架空输电线 弧垂 实时监测 

分 类 号：TM726.3[电气工程—电力系统及自动化]