基于现场监控终端的线路故障定位优化矩阵算法

OPTIMIZED MATRIX ARITHMETIC OF LINE FAULTLOCATION BASED ON FIELD TERMINAL UNIT

从解决双电源及多电源并列供电系统等复杂配网的故障定位问题及提高定位算法的计算效率入手 ,提出了基于现场监控终端的故障定位统一算法——优化矩阵算法。该算法以矩阵分析为基础 ,既能实现普通树状网及开环运行的环网的故障定位 ,又能满足闭环运行的环网故障定位需求 ,对配电网运行工况的变化有较强的适应能力。与优化前矩阵算法相比 ,不仅扩大了算法的适应范围 ,而且由于采用了分线路存储技术并以矩阵间有效元素的直接运算代替矩阵计算 ,改善了系统的存储效率和算法的工作量 ,计算速度快。

An optimized matrix arithmetic. which is a universal fault location me thod based on field terminal unit (FTU) isproposed in this paper in order to promote the calculation efficiency and expand its adaptability to the complex powerdistribution system such as in the two--source or multi--source system. Based on the matrix analysis. this,method can suit notonly to radial or mesh architecture in radial operation distribution systems. bu t also to closed--loop mesh ones. Furthermore,it doesn't need any modification when the operating mode of the distribution sys tem changes. Comparing to the formerarithmetic, this method has higher storage efficiency and less burden of calcula tion, because in this method, parameters of thedistribution are all--stored according to the power line and calculated with the relevant elements Instead of the whole matrixes.