Influence of difference system parameters on operating conditions of third harmonic ground-fault protection system of unit-connected generator

被引:10
|
作者
Zielichowski, M [1 ]
Mydlikowski, R [1 ]
机构
[1] Wroclaw Tech Univ, Inst Elect Power Engn 1 8, PL-50370 Wroclaw, Poland
关键词
fault location; generators; grounding; windings; protection;
D O I
10.1109/TPWRD.2004.825123
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 the paper, the influence of unbalance of the measuring element of the unit-connected generator stator ground-fault protection system excited by the ratio of third harmonic voltage to ground in the generator neutral and at the generator terminals on the value of the voltage supplied to the measuring element during ground faults is analyzed. The analysis is made for currently used ground-fault protection systems in which the measuring element is balanced by an autotransformer voltage divider or an impedance bridge.
引用
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页码:560 / 564
页数:5
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