Incorrect Operations of Pilot Scheme with Ground Overcurrent Protection

The incorrect operations of the pilot scheme Permissive Overreaching Transfer Trip (POTT) with ground overcurrent element are evaluated in this paper. The practical experience of several in practice incorrect operations are gathered to list the associated reasons in setting relay steps. To improve t...

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Bibliographic Details
Published in2019 IEEE Canadian Conference of Electrical and Computer Engineering (CCECE) pp. 1 - 4
Main Authors Gouveia, F. A. O., Neves, W. L. A., Reis, R. L. A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 05.05.2019
Subjects
ground overcurrent protection
high fault impedance
pilot scheme
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Summary:The incorrect operations of the pilot scheme Permissive Overreaching Transfer Trip (POTT) with ground overcurrent element are evaluated in this paper. The practical experience of several in practice incorrect operations are gathered to list the associated reasons in setting relay steps. To improve the performance and ensure security of pilot scheme with ground directional overcurrent element, some measures and recommendations are presented regarding the used voltage polarization.
ISSN:2576-7046
DOI:10.1109/CCECE.2019.8861814