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Determining distance relay Zone-1 reach settings to prevent CCVT transient overreach

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2 Author(s)
Gregory A. Franklin ; Dept. of Electrical and Computer Engineering, University of Alabama at Birmingham, USA ; Randy Horton

This paper presents the results of a study on determining Zone-1 reach settings for transmission line distance relays to prevent overreach resulting from coupling capacitor voltage transformer (CCVT) transients. In particular, this study focused on digital distance relays and determining appropriate relay reach settings to account for the effects of CCVT transients during faults for CCVTs with active ferroresonant suppression circuits. The results of the study presented herein are based on EMTP simulations that were validated by actual relay tests.

Published in:

Southeastcon, 2011 Proceedings of IEEE

Date of Conference:

17-20 March 2011