基于形态学电能质量干扰检测算法中结构元素的选取

Structureelement selection of power disturbance detection algorithms based on mathematical morphology

基于形态学的电能质量干扰检测算法所选用的结构元素对检测效果有着重要的影响。因此,在对基于形态学的电能质量干扰检测算法进行验证之前,需要首先确定所用结构元素的形状。针对电力系统中的常见电能质量干扰,通过仿真分析,以基于广义形态学开闭和闭开小波变换(GMOCUW)的电能质量干扰检测算法为例,对基于几种常用简单结构元素及其组合的GMOCUW的检测效果进行详细地分析研究,进而给出GMOCUW最优结构元素的形状。同时总结关于基于形态学的电能质量干扰检测算法中结构元素形状选取的一些简单原则,为基于形态学的电能质量干扰检测算法中结构元素的选取提供一定的参考。

Structure element（SE）has an important impact on the effect of power disturbance detection algorithm based on mathematical morphology（MM）.Therefore,the shapes of the applied SEs need to be determined before testing the power disturbance detection algorithm based on MM.With respect to different types of power disturbances possibly encountered in power system,a simulation is studied for the power disturbance detection algorithm based on generalized morphological open-closing and close-opening wavelet（GMOCUW）.The detection performance of GMOCUW which has some common SEs,simple structures and their combinations,is detailed analyzed.In addition,the shape of the optimal SEs is also given.Meanwhile,some simple selection laws about the shapes of SEs are summarized.These selection laws provide some useful references for structure element selection of power disturbance detection algorithms based on MM.