ABB RELION 615 Series Applications Manual page 34

Section 2
REG615 overview
28
Station bus (IEC 61850-8-1), process bus (IEC 61850-9-2 LE) and IEEE 1588 v2 time synchronization
GUID-2371EFA7-4369-4F1A-A23F-CF0CE2D474D3 V5 EN
Figure 9: Process bus application of voltage sharing and synchrocheck
The 615 series supports IEC 61850 process bus with sampled values of analog
currents and voltages. The measured values are transferred as sampled values using
the IEC 61850-9-2 LE protocol which uses the same physical Ethernet network as the
IEC 61850-8-1 station bus. The intended application for sampled values is sharing the
measured voltages from one 615 series protection relay to other devices with phase
voltage based functions and 9-2 support.
The 615 series protection relays with process bus based applications use IEEE 1588 v2
Precision Time Protocol (PTP) according to IEEE C37.238-2011 Power Profile for
high accuracy time synchronization. With IEEE 1588 v2, the cabling infrastructure
requirement is reduced by allowing time synchronization information to be
transported over the same Ethernet network as the data communications.
Common Ethernet
1MRS758272 B
REG615
Application Manual