A Review of System Grounding Methods and Zero Sequence Current Sources

The purpose of this paper is to provide a tutorial or "refresher" on grounding methods, sources of ground current, ground current flow in the power system, and how each impacts protective relaying. With retirements, new hires, reorganization, cross training, and so on, this subject, like m...

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Bibliographic Details
Published in2008 61st Annual Conference for Protective Relay Engineers pp. 35 - 71
Main Authors Johnson, G., Schroeder, M., Dalke, G.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2008
Subjects
Fault currents
Fault detection
Grounding
Impedance
Power system faults
Power system modeling
Power system protection
Power system relaying
Protective relaying
Transformers
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Summary:The purpose of this paper is to provide a tutorial or "refresher" on grounding methods, sources of ground current, ground current flow in the power system, and how each impacts protective relaying. With retirements, new hires, reorganization, cross training, and so on, this subject, like many others, requires regular review to maintain the experience level of our protection engineers and we trust that the authors accomplished this task.
ISBN:9781424419494
1424419492
DOI:10.1109/CPRE.2008.4515046