基于行波理论的先进故障测距系统实现算法

针对常规行波测距受波速和线路长度参数影响较大等问题,提出并实现了具有多空间数据源综合利用、双模式测距、特殊网络结构自适应优化测距等先进算法的综合行波测距系统。相比常规行波故障测距系统,该系统在线实时确定波速度参数,改变了常规系统中设置固定数值的方式;线路长度的实时校正可消除线路参数长度不准确的影响;同时该系统具备独立测距能力提升的单端测距算法及T型特殊线路自动测距的能力。模拟实验验证表明,该算法可深度优化测距结果,有效提高测距精度,并显著提高行波故障测距的适应能力。

Advanced algorithm of fault location system based on traveling wave theory

As the conventional traveling wave fault location is greatly influenced by the wave speed and line length,a comprehensive traveling wave fault location system is proposed and realized,which applies an advanced algorithm combining the multi-source utilization,dual-mode location and structure-adaptive optimal location together.Different from the conventional traveling wave fault location system with fixed wave speed,it online determines the wave speed and corrects the line length in real time to eliminate the influence of incorrect line length.Both the independent single-ended location algorithm and the adaptive location algorithm for Teed circuits are included.Experimental results show that,the proposed algorithm optimizes greatly the location results,effectively improves the location accuracy,and obviously enlarges the application area of traveling wave fault location.