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Protection scheme of cross differential relay for double transmission lines

This paper presents the development of the cross differential relay. The new relay is suitable to double circuit HV transmission lines. Based on basic principle of cross differential relay, the paper introduces a percentage cross differential current elements used to improve sensitivity of cross dif...

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Main Authors:	Wang, Q.P., Dong, X.Z., Bo, Z.Q., Caunce, B.R.J., Tholomier, D., Apostolov, A.
Format:	Conference Proceeding
Language:	English
Subjects:	Circuit faults Circuit simulation Circuit stability Digital relays Distributed parameter circuits EMTP Protection Protective relaying Transmission lines Voltage
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container_end_page	2701 Vol. 3
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container_start_page	2697
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creator	Wang, Q.P. Dong, X.Z. Bo, Z.Q. Caunce, B.R.J. Tholomier, D. Apostolov, A.
description	This paper presents the development of the cross differential relay. The new relay is suitable to double circuit HV transmission lines. Based on basic principle of cross differential relay, the paper introduces a percentage cross differential current elements used to improve sensitivity of cross differential relay. To improve stability of cross differential relay, voltage elements are used to distinguish between fault and open circuit condition, and phase selector elements are used to block healthy phase elements. EMTP simulations and real time digital simulator system (RTDS) tests prove that the cross differential protection is able to offer correct responses under various system and fault conditions.
doi_str_mv	10.1109/PES.2005.1489524
format	conference_proceeding
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ispartof	IEEE Power Engineering Society General Meeting, 2005, 2005, p.2697-2701 Vol. 3
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source	IEEE Electronic Library (IEL) Conference Proceedings
subjects	Circuit faults Circuit simulation Circuit stability Digital relays Distributed parameter circuits EMTP Protection Protective relaying Transmission lines Voltage
title	Protection scheme of cross differential relay for double transmission lines
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