光纤测温系统在电缆运行维护中的应用

Application of Optical Fiber Temperature Measurement System in Operation and Maintenance of Cables

随着城市发展,电网改造和城区线路入地的要求越来越高。分布式电缆光纤温度监测系统的应用,具有系统稳定性强,集计算机、光纤通讯、光纤传感、光电控制等技术于一体,不受电磁干扰等优点,可连续监测长距离大范围环境温度信息,并对入地电缆故障部位、温度准确判断与预警,解决单相负载过重等问题,为电力电缆检修运行维护提供了准确依据。文章对系统构成与实施、多系统连网集中控制、实现功能等阐述了光纤测温在大规模城网改造线路入地后应用。

Along with development of cities in recent years, the requirement of power grid upgrading and urban line earthing becomes more and higher, the application of distributed optical fiber temperature monitoring system has the character of strength system stability, and it＇ s a technology collecting with computer, optical fiber communication and sensing, and photoelectric control, and it can monitor long-distance, wide area environment temperature with advantage isolated from electromagnetic interference, besides it can accurately estimate and alarm the fault location, temperature of earthing cable, as well as solve single phase overload. The paper discusses application and prospect of optical fiber temperature measurement in large-scale urban line earthing from system formation and implement, integrated control of multi-system connection and function realization.