一种改进的故障定位矩阵算法

Improved fault location matrix algorithm

针对现有矩阵算法未考虑馈线含故障电流指示器(fault current indicator,FCI)及在处理节点信息漏报情形下,难以处理"T"形等特殊节点和需二次构造矩阵的弊端,提出了利用特殊符号分别标记相应故障信息,并通过对矩阵进行伪初等行变换来消除特殊符号影响的处理策略。结果表明:在关键节点信息缺失时,该策略会适当扩大定位区间;在普通节点信息丢失时,该策略不会影响定位结果;该策略简单、有效,适用于复杂多电源环网开闭环运行方式。

The existing matrix algorithms do not consider the feeder with FCI(fault current indicator)and it is not only difficult to deal with"T"and other special nodes,but also has the disadvantage of secondary construction matrix due to the information missing.To solve the problems,the processing strategy of marking the corresponding fault information with special symbols and eliminating the influence of special symbols by the pseudo elementary line transformation of the matrix is proposed.The results show that when the key node information is missing,the strategy will enlarge the location area appropriately.When the information of the ordinary node is missing,the strategy will not affect the location result.The strategy is simple and effective,and it is suitable for complex multi power open loop or closed loop distribution network.