OPPC预绞式耐张线夹处光纤温度研究  

Research of the Optical Fiber Temperature at OPPC Pre-Stranded Tensile Clamp

作　　者：栗鸣 陈青青 张伯良 徐拥军 王玉 郭怡晶 夏威 LI Ming;CHEN Qingqing;ZHANG Boliang;XU Yongjun;WANG Yu;GUO Yijing;XIA Wei(Zhongtian Power Optical Cable Co.,Ltd.,Nantong 226463,China;Dispatching Center,State Grid Heilongjiang Electric Power Co.,Ltd.,Harbin 150001,China)

机构地区：[1]中天电力光缆有限公司,江苏南通226463 [2]国网黑龙江省电力有限公司信调部,黑龙江哈尔滨150001

出　　处：《电力信息与通信技术》2020年第3期47-52,共6页Electric Power Information and Communication Technology

摘　　要：针对光纤复合架空相线(OPPC)预绞式耐张线夹处光纤温度对OPPC使用寿命影响的问题,文章提出在耐张线夹处加装一根截面相等的分流线的方案,并采用光纤测温法对3种试验规格的OPPC(630/45、400/50、185/30)进行“电流-温升”试验。试验结果表明,未加装分流线时,当非耐张线夹处OPPC表面温度为设计要求的70℃时,此处光纤温度小于80℃,而3种规格的OPPC耐张线夹处内部光纤温度均大于95℃,超过了公认的85℃的光纤最高安全运行温度;在加装分流线后,耐张线夹处光纤温度降至85℃以下,避免了长期的高温环境加速光纤涂层的老化而失去对光纤的保护,保证了OPPC的30年设计寿命。Considering the issue of the influence of optical fiber temperature on the service life of optical fiber composite overhead conductor(OPPC),a scheme of installing a shunted conductor with equal crosssection of OPPC at the pre-stranded tension clamp was presented.The current-temperature rise test of OPPC with three test specifications(630/45,400/50,185/30)was carried out by distributed temperature sensing.According to the experimental results,when the surface temperature of OPPC with no helical tension clamp was 70℃,the temperature of internal optical fibers was lower than 80℃,while the temperature of internal optical fibers in three specifications of OPPC tension clamp is higher than 95℃,which exceeds the recognized maximum safe operating temperature of 85℃ for optical fibers.When installing shunted conductor,the temperature of optical fiber at the tension clamp dropped below 85℃,which avoided the long-term high temperature environment accelerating the aging of the optical fiber coating and losing the protection of optical fiber,and ensured the 30-year design life of OPPC.

关 键 词：OPPC 预绞式耐张线夹 光纤温度寿命 

分 类 号：TN913.33[电子电信—通信与信息系统]