面向电力通信光缆的典型故障精准定位方法

Typical Fault Location Method for Power Communication Cable

在电力系统中,通信是必不可少的,用于电力系统的监控、保护、控制等环节。电力通信光缆作为实现电力系统与通信系统之间互联的重要组成部分,在电力系统中得到广泛应用。针对电力通信光缆故障,不同故障模式可能具有不同的影响和特征,为避免由光缆故障导致的电力通信异常,提出面向电力通信光缆的典型故障精准定位方法。建立电力通信光缆网络信道变换模型,生成电力通信光缆多径信道数据传递函数。引进小波转换算法,对电力通信光缆传输信号进行小波转换。设定信号在空间中的尺度因子,以此为依据提取转换后的信号极值点。根据故障点测量站的位置,精准定位电力通信光缆典型故障。对比实验结果表明,设计的方法可以实现对电力通信光缆典型故障的精准定位。

In power system,communication is essential,which is used in monitoring,protection and control of power system.As an important part of interconnection between power system and communication system,power communication optical cable is widely used in power system.Different fault modes may have different effects and characteristics for power communication optical cable faults.In order to avoid power communication anomalies caused by power communication optical cable faults,an accurate location method of typical faults for power communication optical cables is proposed.The channel transformation model of power communication optical cable network is established,and the data transfer function of multi-path channel of power communication optical cable is generated.Wavelet transform algorithm is introduced to transform the transmission signal of power communication optical cable.Set the scale factor of the signal in space,and extract the converted signal extreme point based on this.According to the position of the fault point measuring station,the typical fault of power communication optical cable can be accurately located.The comparative experimental results show that the designed method can accurately locate the typical faults of power communication optical cables.