基于模糊熵和离散Fréchet距离的小电流接地系统故障选线方法OACSTPCD
Fault line selection method for small current grounding system based on fuzzy entropy and discrete Fréchet distance
根据故障线路与非故障线路的故障特征,提出一种基于模糊熵和离散Fréchet距离的小电流接地系统故障选线方法.利用完备集合经验模态分解(CEEMDAN)对各线路暂态零序电流进行分解,并根据峰度和连续均方误差选取特征IMF分量.对各线路特征IMF分量求取相关系数,构造相似特征矩阵,判断其是线路故障或是母线故障.若为线路故障,则对各线路特征IMF分量进行模糊信息粒化,将各线路粒化后的三组Low,R,Up分别混合叠加,并求取离散Fréchet距离,结合隶…查看全部>>
According to the fault characteristics of fault line and non-fault line,a method of fault line selection for small current grounding system based on fuzzy entropy and discrete Fréchet distance was proposed in this paper.A complete set of empirical mode decomposition(CEEMDAN)was used to decompose the transient zero-sequence current of each line,and the characteristic IMF component was selected according to kurtosis and continuous mean square error.Then,…查看全部>>
肖宇
河南理工大学电气工程与自动化学院,河南焦作 454000
动力与电气工程
CEEMDAN峰度模糊熵离散Fréchet距离故障选线
CEEMDANkurtosisfuzzy entropydiscrete Fréchet distancefault line section
《电测与仪表》 2024 (3)
102-112,11
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