基于直觉模糊集的单相接地故障综合选线方法 - 电网技术.pdf

第35 卷 第11 期 电 网 技 术 Vol. 35 No. 11 2011 年11 月 Power System Technology Nov. 2011 文章编号：1000-3673 （2011 ）11-0228-07 中图分类号：TM 771 文献标志码：A 学科代码：470·4054 基于直觉模糊集的单相接地故障综合选线方法 梁睿，王洋洋 （中国矿业大学信息与电气工程学院，江苏省 徐州市 221008 ） An Intuitionistic Fuzzy Set Based Synthetical Approach of Faulty Line Selection for Single-Phase Ground Fault LIANG Rui, WANG Yangyang (School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu Province, China) ABSTRACT: The condition accompanying with single-phase 全部信息的不足，提高选线的成功率，提出了基于直觉模糊 to ground fault occurred in small current neutral grounding 信息集成的综合选线方法。首先根据接地故障零序电流的特 system is complex, meanwhile there are many factors 征确定故障特征隶属度和非隶属度，然后依据接地故障类型 influencing the accuracy and reliability of faulty line 确定综合选线法中各方法的权重系数，在此基础上建立了基 selection. To utilize fault information more adequately and 于直觉模糊信息集成的综合选线方法模型，并在10 kV 高压 remedy the defects that fault line selection method based on 实验室进行了模拟单相接地故障实验，用MATLAB 软件编 traditional fuzzy theory cannot express all the fault 程处理得到的故障录波数据，选线结果表明该方法能对各种 information, an intuitionistic fuzzy set based synthetical 类型的单相接地故障准确选线，并能克服单一选线方法造成 approach of faulty line selection is proposed to improve the 误选的不足。 success rate of the selection. Firstly, based on the 关键词：单相接地故障；多判据融合；直觉模糊理论；隶属 zero-sequence current characteristics of grounding fault, the 度；非隶属度；权重系数 membership and nonmember