Two-Dimension Fault Line Selection Method Based on Transient Signal Features of Fault Phase

被引:0
|
作者
Zhang, Wenhai [1 ]
Yang, Jianwen [1 ]
Xiao, Xianyong [1 ]
Wang, Ying [1 ]
机构
[1] Sichuan Univ, Coll Elect Engn & Informat Technol, Chengdu 610065, Peoples R China
来源
PROGRESS IN POWER AND ELECTRICAL ENGINEERING, PTS 1 AND 2 | 2012年 / 354-355卷
关键词
Neutral non-effectively earthed system; Distribution system; Fault line selection; Gravity frequency; Transient signal energy; Two-dimension fault line selection criteria;
D O I
10.4028/www.scientific.net/AMR.354-355.1289
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
When single-line-to-ground fault happen in neutral non-effectively earthed system, there is a big difference between the fault feeder and un-fault feeder in transient signal energy centralized frequency band and signal amplitude of fault phase. The transient signal energy in fault feeder's fault phase is bigger, and it centralizes in lower frequency band. But the transient signal in un-fault feeders' has the contrary features. And this feature is affected little by the fault initial angle. So the paper proposed a method that using the gravity frequency and transient signal energy to form a two-dimension line selection method that using the signal overall distribution characteristics. It can be applied in neutral unearthed and resonant system simultaneously. And the method is effectively to different fault initial angle and fault resistance. The method is proved correctly, effectively and adaptively by actual simulation in different fault cases.
引用
收藏
页码:1289 / 1292
页数:4
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