数学形态学在配电网故障选线中的应用

针对配电网故障选线的研究现状,提出了一种暂态选线新算法.该算法利用两结构元素并行复合形态滤波器对选线数据进行滤波预处理,然后利用形态学算子对滤波后的波形数据进行形态突变检测,由此确定故障线路.采用EMTP仿真和Matlab数据处理相结合的方法对该算法进行验证,结果表明当配电网发生单相接地故障时,该算法不受过渡电阻、故障时刻和系统运行方式变化的影响,能够准确地确定故障线路.

Application of Mathematical Morphology in Fault Line Selection of Power Distribution Networks

According to the researching situation of fault line selection in distribution networks,a novel algorithm of transient line selection is proposed.By adopting two-SE parallel composite morphology filter,the sampling data is pre-filtered,and then morphological operator is applied to detect morphological mutation of wave data after filtering for determined the fault line.The algorithm is verified by the method combining with EMTP simulation and Matlab data processing,the results prove that when single-phase gr...