New possibilities in amplitude- and phase-comparison techniques for distance relays

Khincha, HP and Parthasarathy, K and Ashok Kumar, BS and Arun, CG (1970) New possibilities in amplitude- and phase-comparison techniques for distance relays. In: Electrical Engineers, Proceedings of the Institution of , 117 (11). pp. 2133-2141.

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Abstract

The paper reports further work on the amplitude-comparison technique described by the same authors in a previous paper. This technique is extended to develop improved polar characteristics. Discontinuous polar characteristics, like directional parallelograms, are obtained by a single measuring gate with a simple mode of relay circuitry, whereas two measuring gates are required to provide a directional-quadrilateral characteristic of potentially general application. The paper also describes some new possibilities in phase-comparison methods for distance-protection schemes. Comparator models which effect the amplitude and phase comparison of the relaying signals are described in their schematic form. A comprehensive theoretical basis for comparison is also presented.

Item Type:	Journal Article
Publication:	Electrical Engineers, Proceedings of the Institution of
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:	Relay protection;Phase comparators
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	05 Jan 2012 07:03
Last Modified:	05 Jan 2012 07:03
URI:	http://eprints.iisc.ac.in/id/eprint/43063

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