Influence of load on operating conditions of third harmonic ground-fault protection system of unit connected generators

被引：12

作者：

Zielichowski, M ^{[1
]}

Fulczyk, M ^{[1
]}

机构：

[1] Wroclaw Univ Technol, Inst Elect Power Engn I8, PL-50370 Wroclaw, Poland

来源：

IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION | 1999年 / 146卷 / 03期

关键词：

D O I：

10.1049/ip-gtd:19990249

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：

The influence of the load of the unit connected generator on the operating conditions of the ground-fault protection of the stator windings of the generator, excited by the ratio of the third harmonic voltage in the generator neutral and at the generator terminals to ground, was analysed. On the basis of the theoretical analysis, experimental tests and computer simulations, relations between the voltage feeding the measuring element of the ground-fault protection and the load of the unit during ground faults along the entire length of the stator windings were determined. The influence of the method of balancing ground-fault protection on the third harmonic voltage feeding its measuring element was determined. It has been found that correct operation of the ground-fault protection calls for the the influence of the load on the resolution of the third harmonic voltages in unit connected generator circuits to be taken into account.

引用

页码：241 / 248

页数：8

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Technical University of Wroclaw, Institute of Electrical Power Engineering , Wybrzeze Wyspiariskieo, 27, 50-370 Wroclaw, Poland
IEE Proc Gener Transm Distrib, 3 (241-248):
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