基于光纤布拉格光栅的电力通信光缆接头盒密封状态监测方法  

Monitoring Method for Sealing State of Power Communication Optical Cable Joint Box Based on Fiber Bragg Grating

作　　者：付连宇 廖帮全[1] 卢超 腰梦婷 黄姝一 康萍萍 FU Lianyu;LIAO Bangquan;LU Chao;YAO Mengting;HUANG Shuyi;KANG Pingping(School of Physical Science and Technology,Tiangong University,Xiqing District,Tianjin 300387,China;Information&Communication Company,State Grid Tianjin Electric Power Company,Hebei District,Tianjin 300100,China)

机构地区：[1]天津工业大学物理科学与技术学院,天津市西青区300387 [2]国网天津市电力公司信息通信公司,天津市河北区300100

出　　处：《电力信息与通信技术》2025年第4期56-61,共6页Electric Power Information and Communication Technology

摘　　要：为有效监测电力通信光缆接头盒的密封状态,文章提出一种基于布拉格光纤光栅的相对湿度监测方法,通过监测光缆接头盒的相对湿度变化实现对接头盒密封状态的实时监测。布拉格光栅在经过湿度增敏材料处理后,具备良好的湿度响应特性,一旦接头盒密封不良,能够快速地监测接头盒内部相对湿度发生改变,起到预警作用。实验证明,该方法能够快速反映接头盒内部相对湿度的变化,有效监测接头盒内密封状态。同时,由于布拉格光纤光栅是无源器件且只对特定波长具有滤波作用,在高压强磁环境中具备良好的通道稳定性和业务传输性,在实际工程中具有广泛的应用前景。In order to effectively monitor the sealing state of power communication optical cable joint box,this paper proposes a relative humidity monitoring method based on fiber Bragg grating,which is used to effectively monitor the change of relative humidity of optical cable joint box,so as to monitor the sealing state of joint box.The Bragg grating has good humidity response characteristics after being treated with humidity sensitizing materials.Once the joint box is poorly sealed,it can well monitor the change of relative humidity inside the joint box and play an early warning role.The results show that the method can quickly respond to the change of relative humidity inside the junction box and effectively monitor the sealing state inside the junction box.At the same time,since the fiber Bragg grating is a passive device and only has a filtering effect on a specific wavelength,it has good channel stability and service transmission in a high-pressure and strong magnetic environment,and has a wide application prospect in practical engineering.

关 键 词：布拉格光纤光栅 光缆接头盒 相对湿度 密封状态 

分 类 号：TN913.33[电子电信—通信与信息系统] TP212[电子电信—信息与通信工程]