NEW DISTANCE PROTECTIVE RELAY WITH IMPROVED COVERAGE FOR HIGH-RESISTANCE EARTH FAULTS

被引：4

作者：

JOHNS, AT ^{[1
]}

ELALAILY, AA ^{[1
]}

机构：

[1] UNIV BATH,SCH ELECT ENGN,POWER SYST LAB,BATH BA2 7AY,SOMERSETSHIRE,ENGLAND

来源：

PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON | 1977年 / 124卷 / 04期

关键词：

D O I：

10.1049/piee.1977.0064

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：

Distance-type protective equipment often has, for a variety of practical reasons, rather limited tolerance to high-resistance ground-fault conditions. In this paper, a new distance relay, which has increased resistive coverage, is described, and it is shown to possess a characteristic which varies so as to accommodate more closely the impedance measured for various prefault loading conditions. Complicated setting procedures are avoided, and the results of dynamic tests show that the accuracy of the measurement can be maintained. A high degree of immunity to balanced phenomena such as power swings and operation during faults not involving a particular phase is inherent to the new relays. Results relating to an application involving a 220 kv line of ungrounded construction are presented.

引用

页码：349 / 355

页数：7

共 14 条

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JOHNS, AT
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