小电流接地故障多层次分类及其识别模型  

Multilevel Classification and Identification Model for Earth Faults in Non-solidly Earthed Network

作　　者：杨帆 金鑫[3] 沈煜 梁永亮 周志强[1,2] 薛永端 YANG Fan;JIN Xin;SHEN Yu;LIANG Yongliang;ZHOU Zhiqiang;XUE Yongduan(State Grid Hubei Electric Power Research Institute,Wuhan 430077,China;Key Laboratory of High voltage Field-test Technique of SGCC,Wuhan 430077,China;College of Information and Control Engineering,China University of Petroleum（East China）,Qingdao 266580,China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北省武汉市430077 [2]国家电网公司高压电气设备现场试验技术重点实验室,湖北省武汉市430077 [3]中国石油大学(华东)信息与控制工程学院,山东省青岛市266580

出　　处：《电力系统自动化》2018年第15期186-191,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51477184)~~

摘　　要：小电流接地系统的单相接地故障类型识别对提升配网运行的安全性和可靠性具有重要意义。首先,根据故障的稳态和暂态特征,对单相接地故障进行了多层次递进式分类和定义;其次,提取不同类型故障的电气量特征,建立小电流接地故障类型识别模型;最后,以现场的录波数据对文中提出的故障类型识别模型进行验证。验证结果表明,所提方法能够有效地识别接地故障类型,有利于提高小电流接地故障处理的针对性。The identification of single-phase earth fault in non-solidly earthed network is of great significance for improving the safety and reliability of distribution network operation.Firstly,based on the steady and transient characteristics of recorded fault data,a multilevel hierarchical classification is made of single-phase earth fault and the definitions of different faults are made.Secondly,the electrical characteristics of different types of fault are extracted and a single-phase earth fault type recognition model is established.Finally,the proposed fault type recognition model is verified by the recorded data on the scene.The test results show that the proposed method can effectively identify earth fault type,which is beneficial to improve the pertinence of fault handling in non-solidly earthed network.

关 键 词：小电流接地系统 单相接地故障 多层次分类 电气量特征 故障识别 

分 类 号：TM862[电气工程—高电压与绝缘技术]