作　　者： ; ; ; ; ;

机构地区： 华南理工大学电力学院

出　　处： 《电力系统自动化》 2013年第13期114-120,共7页

摘　　要： 建立了测量光纤复合架空相线(OPPC)线芯温度的分布式布里渊散射光纤传感系统。针对OPPC以及50km的光纤测量距离,在人工覆冰室和室外分别进行了温度精度测量和温度分布测量试验,利用卷扬机给OPPC增加拉力,进行了OPPC线芯应力和表面应力分布测量试验,测量了布里渊散射频率的变化。结果证明:所建系统的温度测量精度可达2℃,布里渊散射频率与温度变化呈较好的线性关系;OPPC线芯光纤不能感知OPPC受到的拉力,此时无需对温度进行应力修正;敷设在OPPC表面的光缆可以满足工程测量OPPC应力的需求。 The distributed optical fiber sensing system based on Brillouin scattering for measuring the wire core temperature of optical phase conductors （OPPCs） is established. The measurement tests on temperature measurement accuracy and distribution for OPPC as well as 50 km optical fiber were carried out in an artificial icing room and outdoor, respectively. Distributed stress measurement of OPPC wire core and surface were tested through a winch to increase the tension of OPPC, and the Brillouin scattering frequency was measured. Results prove that the system＇ s temperature measurement accuracy is 2 ℃. Brillouin scattering frequency shift is linearly proportional to temperature changes. The outside tension that OPPC suffered cannot be perceived by the OPPC core fiber. Therefore, the stress correction during temperature measurement needs not to be carried out. The stress fiber that optical cable laid on the OPPC surface meet the engineering requirements of OPPC stress measurement.

关 键 词： 输电线路 在线监测 线路温度 布里渊散射 光纤复合架空相线

领　　域： [电气工程]