基于广域测量的超长距离通信光缆故障监测

针对通信光缆故障监测频率同步性受到光缆长度限制、易出现监测精度下降的问题,提出基于广域测量的超长距离通信光缆故障监测方法。该方法通过全球定位系统(GPS)精准同步向量测量单元(PMU),提供频率、相位和幅值信息,利用光时域反射仪(OTDR)技术判断光缆故障点,完成超长距离光缆故障监测。实验结果表明:光缆故障信号频率变化明显,与实际监测结果拟合度高于90%,测量时间较短,对超长距离通信光缆故障监测的效果较好。

Ultra-long-distance communication optical cable fault monitoring based on wide area measurement

Aiming at the problem that the frequency synchronization of communication optical cable fault monitoring is limited by the length of optical cable,and the monitoring accuracy is easy to decline,a fault monitoring method for ultra-long-distance communication optical cable based on wide area measurement is proposed.In this method,the global positioning system(GPS)precise synchronous vector measurement unit(PMU)is used to provide frequency,phase and amplitude information,and the optical time domain reflectometer(OTDR)technology is used to determine the optical cable fault point,and the ultra long distance optical cable fault monitoring is completed.The experimental results show that:the frequency of optical cable fault signal changes obviously,and the fitting degree with the actual monitoring results is higher than 90%,the measurement time is short,and the monitoring effect of ultra-long-distance communication optical cable fault is better.