High Availability Seamless Redundancy (Hsr) Solution; Self-Healing Ethernet Ring Solution - ABB RET620 Product Manual

Transformer Protection and Control
RET620
Product version: 2.0
COM600
Redundancy
Box
REF615 REF620
GUID-7996332D-7FC8-49F3-A4FE-FB4ABB730405 V1 EN
Figure 6.

High availability seamless redundancy (HSR) solution

The choice between the HSR and PRP redundancy protocols
depends on the required functionality, cost and complexity.
The self-healing Ethernet ring solution enables a cost-efficient
communication ring controlled by a managed switch with
standard Rapid Spanning Tree l Protocol (RSTP) support. The
managed switch controls the consistency of the loop, routes
the data and corrects the data flow in case of a
Client A
Managed Ethernet switch
with RSTP support
GUID-AB81C355-EF5D-4658-8AE0-01DC076E519C V4 EN
Figure 7.

Self-healing Ethernet ring solution

All communication connectors, except for the front port
connector, are placed on integrated optional communication
modules. The IED can be connected to Ethernet-based
communication systems via the RJ-45 connector (100Base-
16
SCADA
Redundancy
Box
IEC 61850 HSR
RET620 REM620
Devices not supporting HSR
Ethernet switch
Redundancy
Box
REF615
communication switch-over. The IEDs in the ring topology act
as unmanaged switches forwarding unrelated data traffic. The
Ethernet ring solution supports the connection of up to thirty
620 series IEDs. If more than 30 IEDs are to be connected, it
is recommended to split the network into several rings. The
self-healing Ethernet ring solution avoids single point of failure
concerns and improves the reliability of the communication.
Client B
Managed Ethernet switch
with RSTP support
TX) or the fibre-optic LC connector (100Base-FX). If
connection to a serial bus is required, the 10-pin RS-485
screw-terminal or the fibre-optic ST connector can be used.
1MRS757846 A
Network A
Network B
ABB