INSULATION DETERIORATION MONITORING-SYSTEM FOR UNGROUNDED POWER DISTRIBUTION-SYSTEMS

被引：3

作者：

OHNISHI, H

YOKOYAMA, H

YONEYAMA, T

AOYAGI, M

AKUTSU, Y

KANOI, M

IWASHITA, K

HAGA, H

NAKAMURA, M

机构：

[1] HITACHI LTD,HITACHI RES LAB,HITACHI,IBARAKI 316,JAPAN

[2] HITACHI LTD,KOKUBU WORKS,HITACHI,IBARAKI 316,JAPAN

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 1994年 / 9卷 / 02期

关键词：

INCIPIENT PHENOMENA; DISTRIBUTION SYSTEM; INSULATION DETERIORATION; ZERO-PHASE SEQUENCE VOLTAGE; ZERO-PHASE SEQUENCE CURRENT; FREQUENCY SPECTRA;

D O I：

10.1109/61.296287

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：

An insulation monitoring system is described for detecting ungrounded power distribution sections having an incipient intermittent ground (incipient ground, hereinafter) caused by insulation deterioration. Test results are presented to effectiveness of the monitoring system. At first, the system concept is described. Next, the principle of the section detection method is given which is based on the phase relationship between the zero-phase sequence voltage (V(O)) and zero-phase sequence current (I(O)). Finally, test results, which demonstrate that the insulation monitoring system can detect a section having a ground current of several tens of mA, are presented.

引用

页码：1028 / 1033

页数：6