谐振接地系统高阻接地故障暂态选线与过渡电阻辨识

发布时间：2018-05-17 09:34

本文选题：谐振接地系统 + 小电流接地故障　；参考：《中国电机工程学报》2017年17期

【摘要】：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。
[Abstract]:For small current grounding fault, the traditional analysis method considers that the transient process is the zero state response under the excitation of the virtual power supply at the fault point. The transient voltage and transient current at the outlet of the fault line reflect the impedance characteristics of the line behind the fault point and cannot directly reflect the state of the fault point current and the transient resistance. In this paper, the transient mechanism and transient electrical characteristics of high resistance grounding fault in resonant grounding system are analyzed, the transient analysis theory of low current grounding fault is improved, the accuracy of line selection for high resistance grounding fault is improved, and the fault detection and compensation for high resistance grounding fault are also presented. Overvoltage protection and other technologies provide the basis. The feasibility of using digital simulation and field data verification method.
【作者单位】：中国石油大学(华东)信息与控制工程学院电气系;国网江苏省电力公司电力科学研究院;山东理工大学智能电网研究中心;国网福建省电力有限公司;
【基金】：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)~~
【分类号】：TM862

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