基于弱光纤光栅阵列的变电站超长GIS沉降监测研究  

Settlement Monitoring of Ultra-Long GIS in Substations Based on Weak Fiber Bragg Grating Array

作　　者：朱悦林 朱贵池 王宁 王霄 罗新飞 徐石 肖卓君 李少鹏 文泓桥[3] Zhu Yuelin;Zhu Guichi;Wang Ning;Wang Xiao;Luo Xinfei;Xu Shi;Xiao Zhuojun;Li Shaopeng;Wen Hongqiao(Zhejiang Jingyuan Electric Power Industrial Co.,Ltd.,Lishui 323600,Zhejiang,China;Zhejiang Electric Power Co.,Ltd.Ultra-High Voltage Branch,State Grid Corporation of China,Hangzhou 310013,Zhejiang,China;National Engineering Laboratory of Fiber Sensing Technology,Wuhan University of Technology,Wuhan 430070,Hubei,China)

机构地区：[1]浙江静远电力实业有限公司,浙江丽水323600 [2]国家电网浙江省电力有限公司超高压分公司,浙江杭州310013 [3]武汉理工大学光纤传感技术国家工程实验室,湖北武汉430070

出　　处：《激光与光电子学进展》2025年第1期338-343,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金面上项目(62075172)。

摘　　要：光纤在监测气体绝缘开关设备(GIS)方面具备卓越的抗电磁干扰等显著优势,在高压环境中展现出独特的稳定性和可靠性。此外,基于光纤的弱光栅阵列技术使得光纤传感器实现了规模化部署,具备较高的灵活性和延展性。基于此,将弱光纤布拉格光栅(WFBG)静力水准仪和应变传感光缆结合以实现对GIS的安全监测,前者实现竖直方向上的沉降监测,后者实现水平方向上的位移监测。静力水准仪和应变传感光缆均采用弱光纤布拉格光栅作为敏感元件,以时分复用的方式进行组网,实现对超长GIS基础的长期实时沉降监测。该系统被应用到±800 kV特高压换流站中的GIS设备进行基础沉降监测,包括33只WFBG静力水准仪和325只弱光栅应变传感器,已获取的两个月的监测数据与人工观测数据相符,表明该系统在相关结构监测中具有良好的应用价值。Optical fiber has remarkable advantages such as excellent anti electromagnetic interference in monitoring gas insulated switchgear(GIS),showing unique stability and reliability in high voltage environment.In addition,the weak grating array technology based on fiber enables the large-scale deployment of fiber sensors,which has high flexibility and ductility.Therefore,this paper combines weak fiber Bragg grating(WFBG)static leveling instruments and strain sensing optical fibers,to achieve the safety monitoring of GIS.The former realizes settlement monitoring in the vertical direction,whereas the latter achieves displacement monitoring in the horizontal direction.Both the static leveling instrument and strain sensing optical fiber employ weak fiber Bragg gratings as sensitive components and are interconnected using timedivision multiplexing,to achieve long-term real-time settlement monitoring of ultra-long GIS equipment foundations.This system is applied to the monitoring of GIS foundation settlement in a±800 kV ultra-high voltage converter station,comprising 33 WFBG static levels and 325 WFBG strain sensors.The monitoring data obtained over a two-month period align with manual observation data,indicating its excellent practical value in relevant structural monitoring.

关 键 词：光纤传感 沉降监测 气体绝缘开关设备 弱光栅静力水准仪 弱光栅阵列 

分 类 号：U196.2[交通运输工程]