高压输电杆塔风振光纤实时监测系统  

Real-time optical fiber monitoring system for wind-induced vibration of high-voltage transmission towers

作　　者：罗啸宇 南颖刚 梁永纯 谢文平 闵力 郭团[3] 聂铭 LUO Xiaoyu;NAN Yinggang;LIANG Yongchun;XIE Wenping;MIN Li;GUO Tuan;NIE Ming(Electric Power Research Institute of Guangdong Power Grid Co.,Ltd.Guangzhou 510080,China;School of Physics and Astronomy,Yunnan University,Kunming 650091,China;College of Physics and Optoelectronic Engineering,Jinan University,Guangzhou 511443,China;Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]广东电网有限责任公司电力科学研究院,广东广州510080 [2]云南大学物理与天文学院,云南昆明650091 [3]暨南大学物理与光电学院,广东广州511443 [4]齐鲁工业大学(山东省科学院),山东济南250353

出　　处：《红外与激光工程》2025年第2期127-133,共7页Infrared and Laser Engineering

基　　金：广东省海洋经济发展重点项目(GDNRC [2023]23);中国南方电网有限责任公司科技项目(GDKJXM20220137)。

摘　　要：中国沿海地区常常受到破坏性飓风和强烈季节性风的威胁,分布在该地区的高压输电杆塔可能因此遭受影响甚至损坏。在应对风振对高压输电塔的影响时,如何实时对输电杆塔进行监测是其中的关键一步。针对这一需求,提出了一种高灵敏度光纤传感系统,光纤传感探头是通过将一根在纤芯中刻有倾斜光栅的细芯光纤同轴拼接到一根单模光纤上构成的。在风振发生时,通过两个光电探测器来分别实时监测光纤纤芯模式和包层模式的能量变化,利用包层模式的能量变化来探测风振频率和强度,利用纤芯模式能量变化作为参考量消除环境温度干扰及光源抖动影响。实验结果显示,该传感器在0.1~6.5 m/s2的加速度变化范围的线性度超98%。最后,将文中系统应用于南方电网公司的输电杆塔监测,验证了该光纤传感系统在实际应用中的可行性。Objective China's coastal regions frequently face threats from destructive hurricanes and strong seasonal winds,which pose risks to high-voltage transmission towers distributed across the area.These extreme weather conditions can cause significant damage to the towers,making real-time monitoring a crucial measure in mitigating potential harm.Implementing a real-time condition monitoring system enables early detection of critical damage from wind-induced vibrations,allowing for timely remedial actions,such as shutting down power lines to prevent further damage.This paper investigates the feasibility of using an all-fiber sensing system to monitor wind-induced vibrations in transmission towers in real time.Methods The proposed system utilizes an optical sensing probe,which integrates a thin-core optical fiber with a tilted grating inscribed in its core,spliced coaxially to a single-mode optical fiber.During wind-induced vibrations,two photodetectors are employed to monitor the energy changes in the core and cladding modes of the fiber.The energy changes in the cladding mode are used to detect the frequency and intensity of the vibrations,while the energy variations in the core mode serve as a reference for ambient temperature and light source fluctuations.Results and Discussions Experimental results show that the proposed system delivers a linear response exceeding 97%within a vibration range of 0.1-6.5 m/s2,with a deviation of less than 1.5%.Under practical conditions,the system consistently achieves stable real-time measurements within a wind speed range of 2 to 4.5 m/s.The system was subsequently applied to transmission towers of the China Southern Power Grid Company,where field tests confirmed the feasibility of the proposed all-fiber sensing system in real-world applications.Conclusions We successfully demonstrated the feasibility of an all-fiber vibration sensing system for real-time monitoring of wind-induced vibrations in high-voltage transmission towers.The sensor consists of a TCF-TFBG spliced with an SMF

关 键 词：风振监测 倾斜光栅 布拉格光栅 频率检测 光纤传感器 高压输电杆塔 

分 类 号：TN253[电子电信—物理电子学]