谐振接地系统高阻接地故障暂态选线与过渡电阻辨识OA北大核心CSCDCSTPCD
Faulty Feeder Selection and Transition Resistance Identification of High Impedance Fault in a Resonant Grounding System Using Transient Signals
对于小电流接地故障,传统分析方法认为暂态过程是在故障点虚拟电源激励下的零状态响应,故障线路出口的暂态电压与暂态电流反映的是背离故障点的背后健全线路阻抗特性,不能直接反映故障点电流及过渡电阻状态.文中分析谐振接地系统高阻接地故障暂态机理与暂态电气量特征,完善小电流接地故障暂态分析理论,提高高阻接地故障选线准确性,并为高阻接地故障的检测、补偿、过电压防护等技术提供基础.采用数字仿真和现场数据验证方法的可行性.
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…查看全部>>
薛永端;李娟;陈筱薷;徐丙垠;李天友
中国石油大学(华东)信息与控制工程学院电气系,山东省青岛市266580国网江苏省电力公司电力科学研究院,江苏省南京市211100中国石油大学(华东)信息与控制工程学院电气系,山东省青岛市266580山东理工大学智能电网研究中心,山东省淄博市255049国网福建省电力有限公司,福建省福州市350003
信息技术与安全科学
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
resonant grounding systemsmall current grounding faulthigh impedance faultfault feeder selectionparameter identification
《中国电机工程学报》 2017 (17)
有源配电网接地方式与接地故障自愈控制的基础问题
5037-5048,12
国家自然科学基金项目(51477184)国家863高技术基金项目(2014AA051901)国家电网公司科技项目(52130416000D).Project Supported by National Natural Science Foundation of China (51477184)The National High Technology Research and Development of China 863 Program (2014AA051901)Key Technology Project of State Grid Corporation of China (52130416000D).
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