同杆双回线跨线故障性质判别方法研究  

Judgement method of cross line fault nature of double circuit line on Same Pole

作　　者：张华伟 苏蕾蕾 张松刚 张璐 ZHANG Hua-wei;SU Lei-lei;ZHANG Song-gang;ZHANG Lu(State Grid Henan Electric Power Company Zhumadian Power Supply Company,Zhumadian 463000,Henan Province,China;State Grid Henan Electric Power Company Zhengzhou Power Supply Company,Zhengzhou 450000;State Grid Henan Electric Power Company,Zhengzhou 450000)

机构地区：[1]国网河南省电力公司驻马店供电公司,河南驻马店463000 [2]国网河南省电力公司郑州供电公司,郑州450000 [3]国网河南省电力公司,郑州450000

出　　处：《信息技术》2021年第2期147-152,共6页Information Technology

摘　　要：为判别同杆双回线跨线故障性质,提出基于模糊诊断原则的模糊聚类算法。建立模糊相似矩阵,计算最大矩阵元,划分同杆双回线跨线故障性质样本,将其当做模糊综合聚类反复运算中初始分类数,逐步迭代初始分类数并从中随机选取一个初始模糊划分矩阵,计算聚类中心特征矩阵、明可夫斯基距离和目标函数,并修正模糊划分矩阵,根据最终修正的模糊划分矩阵判别故障性质。经过实验分析发现,不同故障位置、不同过渡电阻和不同故障时刻下,该方法判别同杆双回线跨线瞬时性故障以及永久性故障的精准度均高于93%,且方法灵敏度较高。A fuzzy clustering algorithm based on the fuzzy diagnosis principle is proposed to distinguish the nature of cross line fault of double circuit lines on the same pole.The fuzzy similarity matrix is established,the maximum matrix element is calculated,and the cross-line fault property samples of double circuit lines on the same pole are divided,and be treated as the initial classification number in the repeated operation of fuzzy comprehensive clustering.The initial classification number is iterated step by step,and an initial fuzzy partition matrix is selected randomly from it,calculate the cluster center characteristic matrix,the Minkowski distance and the objective function,and modify the fuzzy partition matrix.According to the final modified fuzzy partition matrix,the fault properties are identified.The experimental results show that the accuracy of this method is higher than 93%under different fault location,different transition resistance and different fault time,and the method has high sensitivity.

关 键 词：模糊诊断原则 同杆双回线 跨线 故障性质 判别方法 

分 类 号：TM762[电气工程—电力系统及自动化]