OPGW受拉力时光纤的应变分析  

Stress and Strain Analysis of the Optical Fibers in an OPGW

作　　者：范鹏[1] 刘春翔[1] 姜德华[2] 杨堂华[2] 

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [2]云南电网公司普洱供电局,云南普洱665000

出　　处：《电线电缆》2015年第4期10-13,25,共5页Wire & Cable

摘　　要：为研究光纤复合架空地线内光纤在受拉力情况下的应变特征,进行了复合地线内部光纤在不同拉力作用下的布里渊散射的频移变化特征的试验。实验结果表明,在光纤复合架空地线所受拉力大于额定拉断力的60%时,其内部光纤的布里渊散射的频移与所受拉力呈线性变化趋势,同一光纤复合架空地线内不同光纤的频移应变系数基本相同。该研究为实现OPGW的长期在线应变监测提供了依据。In order to study the stress and strain variation of the optical fibers in OPGW,an experimental for monitoring the stress and strain of the optical fiber using the Brillouin optical time domain reflection technology is conducted. The experimental results show that when the tension of the OPGW is greater than 60% of the rated tensile strength,the optical fiber Brillouin frequency shift linearly increases as the tension increasing. Experimental results indicate that Brillouin strain coefficient of the different optical fibers within the ground wire is basically the same,when the tension of the ground wire is greater than 60% of the rated tensile strength. This research will help our future works for long term online monitoring OPGW operation.

关 键 词：OPGW 光纤 应力 应变 

分 类 号：TN818[电子电信—信息与通信工程]