FBG传感技术在线监测电缆表面温度

FBG Sensors Monitoring Cable Surface Temperature

对电网的安全性运行要求越来越高,在线监测电缆系统的运行状态就显得至关重要。高压电缆系统运行中出现故障时,其电气绝缘性能显著下降,不仅绝缘本体的局部放电量异常增大,同时还常伴随着故障隐患部位的温度异常升高的现象。因此可以通过对电缆系统要害部位和易发生故障部位进行温度在线监测,来判断电缆系统运行状态是否正常。

For the high demand on the safe operation of the power grid increasingly,monitoring cable systems is vitally important to the operation of state.When the high voltage cable system operated in trouble,the electrical insulation properties decreased significantly,it was not only the consumed power of local put insulation was increased,but also often accomparied by an anormalous temperature-rising phenomenon on the cable surface of the hidden failure paste.Therefore the vital parts and the parts to be prone to fault can be monitored on-line by a FBG temperature sensor to determine whether the cable system is running normally.