Section 7 IEC 61850 communication engineering
7.1 IEC 61850 protocol references and pre-conditions
To engineer the IEC 61850 protocol interface for the protection relay, the following
additional manuals or knowledge of their contents is required.
• Knowledge of the IEC 61850 engineering process as described in the IEC 61850
standard
• The technical manual describes the function blocks defined as logical nodes
• The IEC 61850 engineering guide
• The IEC 61850 conformance documents for the protection relay to be engineered
• The IEC 61850 parameter list
7.2 IEC 61850 interface
For more information on the implementation of IEC 61850 in protection
relays, see IEC 61850 engineering guide and conformance documents.
Table 11: Function blocks and IEC 61850 Edition 1 and Edition 2 Logical Nodes
Function
IEC 61850 Logical device Logical nodes in
Ver.5.0 FP1
Logical nodes in
Ver.4.2 or older
Protection
Protection LLN0 Protection LD0 LLN0
LPHD
LINF
LDEV
LLN0
LPHD
IHMI
GSAL
Three-phase non-directional overcurrent protection, low
stage
PHLPTOC LD0 PHLPTOC PHLPTOC
Three-phase non-directional overcurrent protection, high
stage
PHHPTOC LD0 PHHPTOC PHHPTOC
Three-phase non-directional overcurrent protection,
instantaneous stage
PHIPTOC LD0 PHIPTOC PHIPTOC
Three-phase directional overcurrent protection, low stage DPHLPDOC LD0 DPHLPTOC
DPHLRDIR
DPHLPTOC
DPHLRDIR
Table continues on next page
1MAC108982-MB E Section 7
IEC 61850 communication engineering
615 series ANSI 125
Engineering Manual
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