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A Real-time DSP based quadrilateral relay for distance protection of 25kV AC traction overhead equipment

Shenoy, UJ and Sheshadri, KG and Parthasarathy, K and Khincha, HP and Thukaram, D (2004) A Real-time DSP based quadrilateral relay for distance protection of 25kV AC traction overhead equipment. In: 2004 International Conference on Power System Technology-POWERCON, 21-24 November, Singapore, Vol.2, 1339 -1344.


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This paper presents the design, implementation and testing of a single-phase distance relaying scheme for $25kV$ $50 Hz$ AC traction system using a Texas instruments TMS320C50 digital signal processor (DSP). The three-phase system with substations, track section with rectifier-fed DC locomotives and a detailed traction load are modeled using power system block set (PSB)/SIMULINK software package. The model has been used to study the effect of loading and fault conditions in 25 kV AC traction. The relay characteristic proposed is a combination of two quadrilaterals in the X-R plane in which resistance and reactance reaches are independently controllable. The algorithms, hardware and software are also briefly described.

Item Type: Conference Paper
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Additional Information: �©1990 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: Traction system;PSB/SIMULINK;Wrong phase coupling;TMS32OC50 DSP;Quadrlateral relay characteristic
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 02 Dec 2005
Last Modified: 19 Sep 2010 04:21
URI: http://eprints.iisc.ernet.in/id/eprint/4252

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