时域反射法在核级电缆状态监测的应用

The use of time-domain reflectometry(TDR) in early detection of the nuclear cable defects

核级电缆在核岛内敷设,长度通常从几十米到几百米不等,核级电缆的故障定位和维修是电厂故障排查的难点之一。对核级电缆的故障模式进行了分析,对时域反射法的原理和测量方法进行了推算,对时域反射法在核级电缆状态监测和预测性维修领域的应用进行了探讨。

The nuclear were mounted in the nuclear islands,and usually quiet long,up to hundreds meters.When there was one fault in the cable,it is quite hard to locate the faulty position.The radiation makes the situation even worse.This article analysis the statistics of the defect pattern of the nuclear cables and the principle of Time-Domain Reflectometry,and finally discusses the application vision of the TDR use in the predictive maintenance.