基于暂态电流的故障选相原理的探讨  

Study on faulted phase selection principle based on transient current

作　　者：陈茂英[1] 杨明玉[1] 张新国[1] 谌丽 

机构地区：[1]华北电力大学 电气工程学院,河北保定071003 [2]大唐信阳华豫发电有限公司,河南信阳464000

出　　处：《华北电力大学学报（自然科学版）》2005年第1期24-27,共4页Journal of North China Electric Power University：Natural Science Edition

摘　　要：在分析故障相和非故障相的暂态电流特征的基础上,提出一种基于暂态电流的故障选相原理。该原理采用小波变换有效地提取了暂态电流特征,从而实现可靠选相。仿真结果表明,该原理不受故障类型、故障时刻、故障过渡电阻、故障位置的影响。Through analyzing transient current characters of faulted phase and non-faulted phase at fault instant, the paper presents a principle for faulted phase selection based on transient current, which uses wavelet transform for transient current characters. The simulation results prove that the principle is insensitive to fault type, fault time, transition resistance and fault location.

关 键 词：暂态电流 故障选相 故障时刻 过渡电阻 故障位置 故障类型 可靠 原理 仿真结果 小波变换 

分 类 号：TM711[电气工程—电力系统及自动化] TM713