Locating Method of Single-phase Grounding Fault in Small Current Grounding System Based on Distribution Automation

被引：1

作者：

Zhou, Jun ^{[1
]}

Cao, Kezheng ^{[1
]}

机构：

[1] Northeast Dianli Univ, Inst Elect Engn, Dianli, Jilin, Peoples R China

来源：

MECHATRONICS AND INDUSTRIAL INFORMATICS, PTS 1-4 | 2013年 / 321-324卷

关键词：

Small Current Grounding System; fault location; RL series branch; FTU;

D O I：

10.4028/www.scientific.net/AMM.321-324.1423

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In case of the arc suppression coil for neutral point grounding of small current grounding system, when single-phase grounding fault occurs, due to the arc suppression coil for fault line of the compensation effect of the zero sequence current, the fault features is not obvious, it can't implement the fault line selection and fault point location. This paper puts forward a method of change fault lines zero sequence current shortly, namely a resistance inductance (RL) series branch parallel in arc suppression coil, the series branch acts on the system shortly and changes arc suppression coil compensation degree temporarily in single-phase grounding fault. The change of zero sequence residual current only appears the loop from the neutral point to the fault point via the fault line, using FTU (feeder terminal units) on lines monitor the change of zero sequence current on each nodes for fault regional location. And prove this theory the feasibility of the by using MATLAB software of system modeling simulation method.

引用

页码：1423 / 1428

页数：6

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