Process Bus - ABB RELION 615 Series Applications Manual

1MRS758272 B
2.7.3
REG615
Application Manual
GUID-207430A7-3AEC-42B2-BC4D-3083B3225990 V2 EN
Figure 8: HSR solution

Process bus

Process bus IEC 61850-9-2 defines the transmission of Sampled Measured Values
within the substation automation system. International Users Group created a
guideline IEC 61850-9-2 LE that defines an application profile of IEC 61850-9-2 to
facilitate implementation and enable interoperability. Process bus is used for
distributing process data from the primary circuit to all process bus compatible
devices in the local network in a real-time manner. The data can then be processed by
any protection relay to perform different protection, automation and control functions.
UniGear Digital switchgear concept relies on the process bus together with current
and voltage sensors. The process bus enables several advantages for the UniGear
Digital like simplicity with reduced wiring, flexibility with data availability to all
devices, improved diagnostics and longer maintenance cycles.
With process bus the galvanic interpanel wiring for sharing busbar voltage value can
be replaced with Ethernet communication. Transmitting measurement samples over
process bus brings also higher error detection because the signal transmission is
automatically supervised. Additional contribution to the higher availability is the
possibility to use redundant Ethernet network for transmitting SMV signals.
Section 2
REG615 overview
27