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Development of differential protection scheme by microprocessor based per cent differential relay
A K MUKHOPADHYAY, ARABINDA DAS
Published in AMSE Press, Tassin-la-Demi-Lune, France
1995
Volume: 60
   
Issue: 43528
Pages: 27 - 32
Abstract
In this paper, a microprocessor based Biased or Per Cent Differential Relay has been developed to provide maintanence-free, instantaneous Unit Protection against internal faults, enhancing reliability over conventional electromagnetic relay. The trouble arising due to saturation errors and difference in C.T. ratios for high value of external short circuit current has been eliminated successfully, with the help of software using intelligence of a 8085 A CPU based microcomputer.
About the journal
JournalModelling, Measurement and Control A
PublisherAMSE Press, Tassin-la-Demi-Lune, France
ISSN0761-2508