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电力电缆线路运行时的温度和应变在线检测是保障电力系统安全与稳定的必要措施。介绍了用于高压电缆在线监控的分布式光纤传感检测系统方案。详细阐述了检测系统中测量设备的选择,研究了适用于电力系统复杂环境中的温度和应变测量的新型传感光纤——碳密封涂覆光纤,并对这种传感光纤的安装方式进行了探讨。分布式光纤传感检测系统将在高压输电电缆系统的在线检测方面有很大的应用前景。
Power cable line running temperature and strain online detection is to protect the power system security and stability necessary measures. This paper introduces a distributed optical fiber sensing system for on-line monitoring of high voltage cables. The selection of measuring equipment in the detection system is described in detail. A new type of sensing fiber-carbon sealed coated fiber suitable for temperature and strain measurement in complex environment of power system is studied. The installation of this sensing fiber is carried out Discussion. Distributed optical fiber sensing system will have a great application prospect in on-line testing of high voltage transmission cable system.