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C O M M I S S I O N I N G A N D T E S T I N G G U I D E
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Ethernet network verification
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The Ethernet network interconnects protection
02 IP address setting
relays in a substation. As the GOOSE and Process
for rear port(s)
bus are used, having a functional network is
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essential for most of the tests. The network may
03 Network topology
setting and its
or may not be set up and tested in the factory,
Redundancy mode
depending upon purchase contract agreements.
Therefore, after switchgear is assembled onsite,
it may be necessary to set up the network and
then verify its functionality. Before starting any
testing of the communication, properly set the
Ethernet settings in the protection relays, set the
Ethernet switches and, only then, interconnect
the Ethernet network according to the project
documentation. It is assumed that the protection
and control circuits are powered from either the
power supply identified in the project schematic
diagrams, or an alternate power supply if the
switchgear is not energized.
Protection relays
Before starting any secondary testing of the
protection relay functions, verify if the IP
addresses, the network topology and time
synchronization settings are in accordance with
the project documentation.
• IP address setting: Check communication
board setting according to documentation (for
example, the Network Overview diagram).
On the protection relay LHMI go to -> Main Menu/
Configuration/Communication/Ethernet/Rear
port(s)
• IP address = for example, 172.16.2.1
• Subnet mask = for example, 255.255.0.0
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02
• Network topology setting: Check the network
topology setting according to the
documentation.
On the protection relay LHMI go to -> Main
Menu/Configuration/Communication/
Ethernet/Redundancy/Redundant mode
• Redundancy mode = None
• Redundancy mode = HSR (High-availability
Seamless Redundancy protocol)
• Redundancy mode = PRP (Parallel Redundancy
Protocol)
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03
• Time synchronization setting:
Check the setting of time synchronization. For
Process bus functionality, the IEEE 1588 proto-
col must be set up.
On the protection relay LHMI go to -> Main
Menu/Configuration/Time/Synchronization/
Synch source
• Synch source = IEEE 1588
Protection relays, Ethernet switches and Time
Synchronization Clocks must be in the same
PTP domain ID (PTP = precision time protocol).
On the protection relay LHMI go to -> Main
Menu/Configuration/Time/Synchronization/
PTP domain ID
• PTP domain ID = 0
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