New principle for high resistance earth fault detection during fast power swings for distance protection.

被引:57
作者
Mechraoui, A
Thomas, DWP
机构
[1] Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham
关键词
D O I
10.1109/61.634160
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 [电气工程]; 0809 [电子科学与技术];
摘要
The combined effects of a high impedance ground fault condition and a fast power swing condition cause the apparent impedance 'seen' by distance protection schemes to vary over a wide range. Previous research work has shown that detection and location of high impedance faults during power swings is very difficult. A new principle for high impedance fault detection during fast power swings is presented which overcome these deficiencies. This method forms a part of a complete power swing relaying scheme and can be implemented on standard relaying hardware. Results are presented based on extensive simulation studies carried out on a typical 400 kV system, using the Electromagnetic Transient program (EMTP).
引用
收藏
页码:1452 / 1457
页数:6
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