中国电机工程学报2017，Vol.37Issue(17)：5037-5048,12.DOI:10.13334/j.0258-8013.pcsee.170027
谐振接地系统高阻接地故障暂态选线与过渡电阻辨识
Faulty Feeder Selection and Transition Resistance Identification of High Impedance Fault in a Resonant Grounding System Using Transient Signals
摘要
Abstract
Traditional analysis of the transient process of single-phase earth faults in a non-solidly earthed network is considered as a zero-state response generated by the virtual voltage source at the fault point.The transient zero-sequence voltage and current of faulty feeder reflect the impedance characteristics of all the healthy feeders,and they cannot reflect the state of the current at the fault point and the transition resistance directly.The fault transient mechanism and characteristics of transient electric parameters of high impedance fault in a resonant grounding system was analyzed,and the accuracy of faulty feeder selection in high impedance faults was improved.And the paper provided basis for high impedance fault detection,compensation,and over-voltage protection technologies.The feasibility of the method was verified by simulation and field data.关键词
谐振接地系统/小电流接地故障/高阻接地/故障选线/参数识别Key words
resonant grounding system/small current grounding fault/high impedance fault/fault feeder selection/parameter identification分类
信息技术与安全科学引用本文复制引用
薛永端,李娟,陈筱薷,徐丙垠,李天友..谐振接地系统高阻接地故障暂态选线与过渡电阻辨识[J].中国电机工程学报,2017,37(17):5037-5048,12.基金项目
国家自然科学基金项目(51477184) （51477184）
国家863高技术基金项目(2014AA051901) （2014AA051901）
国家电网公司科技项目(52130416000D).Project Supported by National Natural Science Foundation of China (51477184) （52130416000D）
The National High Technology Research and Development of China 863 Program (2014AA051901) （2014AA051901）
Key Technology Project of State Grid Corporation of China (52130416000D). （52130416000D）
