工矿自动化2012，Vol.38Issue(1)：47-51,5.DOI:32-1627/TP.20111228.1112.014
谐振接地系统单相接地故障仿真分析
Simulation Analysis of Single-phase Grounding Fault of Resonant Grounding System
李辉 1唐轶 1孙常青1
作者信息
- 1. 中国矿业大学信电学院,江苏徐州 221008
- 折叠
摘要
Abstract
For problem of difficult line selection caused by small current of fault line with uncertain direction when single-phase grounding fault happens in resonant grounding system, the paper theoretically analyzed change law of zero-sequence voltage and zero-sequence current at the time of single-phase grounding fault. It built simulation model of small current grounding system in Matlab and did simulation analysis of isolated neutral system and resonant grounding systems under conditions of full compensation, over compensation and under compensation separately. The simulation analysis result was the same as the theoretical one. Finally it got conclusions, namely when single-phase grounding fault happens, isolated neutral system can use line selection methods based on steady state component of amplitude and direction while resonant grounding system cannot, and the both systems can use the same line selection method based on transient state component.关键词
小电流接地系统/中性点不接地系统/中性点经消弧线圈接地系统/谐振接地系统/单相接地故障/故障选线/暂态分量/稳态分量Key words
small current grounding system/isolated neutral system/power system connected to earth through an arc suppression coil/resonant grounding system/single-phase grounding fault/fault line selection/transient state component/steady state component分类
矿业与冶金引用本文复制引用
李辉,唐轶,孙常青..谐振接地系统单相接地故障仿真分析[J].工矿自动化,2012,38(1):47-51,5.
