Full Description
Scope
This guide presents practical line current differential schemes using digital communications. Operating principles, synchronization methods, channel requirements, current transformer (CT) requirements, external time reference requirements, backup considerations, testing considerations, and trouble shooting are included. It also provides specific guidelines for various application aspects including multi-terminal lines, series compensated lines, mutually coupled lines, line charging current, in-zone transformers and reactors,single-phase tripping and reclosing, as well as communications channel requirements.Purpose
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New IEEE Standard - Active.A comprehensive guide to practical line current differential schemes using digitalcommunications. Operating principles, synchronization methods, channel requirements, currenttransformer requirements, external time reference requirements, backup considerations, testingconsiderations, and troubleshooting are included. This guide also provides specific guidelines forvarious application aspects including multi-terminal lines, series compensated lines, mutuallycoupled lines, line charging current, in-zone transformers and reactors, single-phase tripping andreclosing, as well as communications channel requirements.