2011•IEEE Transactions on Industry ApplicationsRequires access

Impact of CT Errors on Protective Relays—Case Studies and Analyses

Rich Hunt

Abstract

Current transformers (CTs) are the basic interconnection between the power system and protective relays. One of the practical concerns for the protection engineer is the actual ability of a CT to replicate the primary current. This paper describes how CT replication error impacts protective relay performance by presenting three actual examples of relay performance.

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OpenAlex reports 13 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Key concepts: Protective relay, Relay, Digital protective relay, Current transformer, Interconnection, Reliability engineering, Replicate, Power-system protection