IEC 61850-9-2 Ed. 2.1 en:2020 PDF

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Communication networks and systems for power utility automation – Part 9-2: Specific communication service mapping (SCSM) – Sampled values over ISO/IEC 8802-3 CONSOLIDATED EDITION
standard by International Electrotechnical Commission, 02/12/2020

Document Format: PDF

Description

IEC 61850-9-2:2020 defines the specific communication service mapping for the transmission of sampled values according to the abstract specification in IEC 61850-7-2. The mapping is that of the abstract model on a mixed stack using direct access to an ISO/IEC 8802-3 link for the transmission of the samples in combination with IEC 61850-8-1. Main changes with respect to the first edition are:
– addition of an optional link redundancy layer;
– redefinition of “reserved” fields in link layer;
– evolution of USVCB and MSVCB components;
– evolution of encoding for the transmission of the sampled value buffer.