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《AUTOMATION OF ELECTRIC POWER SYSTEMS》 1994-06
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ANALYSIS AND COMPARISON OF SEVERAL SCHEMESOR DIGITAL GROUND DISTANCE RELAYS

Ye Ping ,Chen Deshu(Huazhong University of Science and Technology , Wuhan)  
One of the most important problems of the ground distance protection is the capability of the fault resistance endurance. The fault resistance may cause the steady state overreach or underreach of the ground distance relay at the ground fault conditions. Thus ,the performance of the ground distance protec-tion may be affected seriously by the fault resistance,In this paper,the authors analysis and compare theoperation characteristic of several schemes for the digital ground distance relays in order to find out the opti-mal scheme for the protecting device.
【CateGory Index】: TM773
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