A probabilistic method for detection and location of very high resistive earth faults

被引：11

作者：

Hänninen, S ^{[1
]}

Lehtonen, M ^{[1
]}

Pulkkinen, U ^{[1
]}

机构：

[1] VTT Energy, Energy Syst, FIN-02044 Vtt, Finland

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2000年 / 54卷 / 03期

关键词：

earth faults; probabilistic methods;

D O I：

10.1016/S0378-7796(99)00084-X

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：

A probabilistic method is presented for the detection and location of very high resistive, permanent single-phase earth faults in medium voltage, radial operated distribution networks (20 kV). The systems considered have an unearthed or a compensated neutral and the fault resistances covered are in the range 5-220 k Omega. The algorithms of the method are based on the change of the neutral-voltage and zero-sequence currents, measured at the MV substation and also at the distribution line locations. The feasibility of the method was verified by an analysis based on system data recorded during field tests in real power systems. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：199 / 206

页数：8