Developments in amplitude-comparator techniques for distance relays

Khincha, HP and Parthasarathy, K and Kumar, Ashok BS (1970) Developments in amplitude-comparator techniques for distance relays. In: Proceedings of the Institution of Electrical Engineers, 117 (6). pp. 1118-1124.

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Abstract

The paper reports the development of new amplitude-comparator techniques which allow the instantaneous comparison of the amplitude of the signals derived from primary line quantities. These techniques are used to derive a variety of impedance characteristics. The merits of the new relaying system are: the simple mode of the relay circuitry, the derivation of closed polar characteristics (i.e. quadrilateral) by a single measuring gate and sharp discontinuities in the polar characteristics. Design principles and circuit models in their schematic form are described and, in addition, a comprehensive theoretical basis for comparison is also presented. Dynamic test results are presented for a quadrilateral characteristic of potentially general application.

Item Type:	Journal Article
Publication:	Proceedings of the Institution of Electrical Engineers
Publisher:	IEEE
Additional Information:	Copyright 1970 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Power-system protection;Relays
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	05 Jan 2012 05:40
Last Modified:	26 Aug 2014 06:47
URI:	http://eprints.iisc.ac.in/id/eprint/43041

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