Galloping Vibration Monitoring of Overhead Transmission Lines by Chirped FBG Array  

Galloping Vibration Monitoring of Overhead Transmission Lines by Chirped FBG

作　　者：Qizhong YAN Ciming ZHOU Xuebin FENG Chi DENG Wenyu HU Yimin XU 

机构地区：[1]National Engineering Laboratory for Fiber Optic Sensor Technology,Wuhan University of Technology,Wuhan 430070,China [2]School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China [3]School of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan 430070,China [4]Wuhan WUTOS Co.,Ltd.,Wuhan 430223,China [5]China Electric Power Research Institute,Beijing 100192,China [6]Wuhan FLOES Co.,Ltd.,Wuhan 430223,China

出　　处：《Photonic Sensors》2022年第3期88-97,共10页光子传感器（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61775173,61975157,and 52071245);the Science and Technology Project of State Grid Corporation of China(Research on the basic technology of the next generation intelligent optical cable based on grating array fiber sensor,Grant No.5442XX190009).

摘　　要：A distributed online fiber sensing system based on the phase-sensitive optical time domain reflectometer(Φ-OTDR)enhanced by the drawing tower fiber Bragg grating(FBG)array is presented and investigated experimentally for monitoring the galloping of overhead transmission lines.The chirped FBG array enhanced Φ-OTDR sensing system can be used to measure the galloping behavior of the overhead transmission lines(optical phase conductor or optical power ground wire),which are helpful for monitoring the frequency response characteristics of the ice-induced galloping,evaluating the motion tendencies of these cables,and avoiding the risk of flashover during galloping.The feasibility of the proposed online monitoring system is demonstrated through a series of experiments at the Special Optical Fiber Cable Laboratory of State Grid Corporation of China(Beijing,China).Results show that the proposed system is effective and reliable for the monitoring of galloping shape and characteristic frequency,which can predict the trend of destructive vibration behavior and avoid the occurrence of cable breaking and tower toppling accidents,and these features are essential for the safety operation in smart grids.

关 键 词：Distributed vibration sensing FBG array galloping monitoring overhead transmission lines 

分 类 号：TN91[电子电信—通信与信息系统]