基于子节点数搜索的配电网故障定位容错算法

Fault Tolerant Algorithm for Distribution Network Fault Location Based on Sub Node Number Search

配电网故障定位容错算法在实际应用过程中存在耗时过长的问题,因此设计一种基于子节点数搜索的配电网故障定位容错算法。获取故障发生期间的线路电流,改进配电网异常处理模式,基于子节点数搜索获取证据体,得出故障传递速度矢量和故障定位矢量的表达公式,提取运行过程中的有功电流给定参考值,构建信号畸变校正模型,通过查表的方式追溯故障回路,设计故障定位容错算法。实验结果显示,在同等条件下,所设计的配电网故障定位容错算法耗时均值为0.245 s,比另外2种配电网故障定位容错算法的耗时均值分别低0.439 s和0.450 s,说明在结合子节点数搜索方法后,设计的配电网故障定位容错算法更加实用。

The fault location and fault tolerance algorithm of distribution network takes too long in practical application,so a fault location and fault tolerance algorithm based on sub node number search is designed.Obtain the line current during the fault occurrence,improve the distribution network exception processing mode,search for evidence body based on the number of sub nodes,obtain the expression formula of fault transmission speed vector and fault location vector,extract the given reference value of active current in the operation process,build the signal distortion correction model,trace the fault loop by looking up the table,and design the fault location and fault tolerance algorithm.Experimental results:Show that under the same conditions,the average time consumption of the fault location and fault tolerance algorithm in the distribution network in this paper is 0.245 s,which is 0.439 s and 0.450 s lower than that of the other two fault location and fault tolerance algorithms,respectively.This shows that the fault location and fault tolerance algorithm designed in this paper is more practical after combining the sub node number search method.