GE L60, Instruction Manual, Page: 454 / 498

C-2 L60 Line Phase Comparison Relay GE Multilin
C.1 INTRODUCTION APPENDIX C
C
C.1.6 COMMUNICATION SOFTWARE UTILITIES
The exact structure and values of the supported IEC 61850 logical nodes can be seen by connecting to a L60 relay with an
MMS browser, such as the “MMS Object Explorer and AXS4-MMS” DDE/OPC server from Sisco Inc.
C.1.7 NON-IEC 61850 DATA
The L60 relay makes available a number of non-IEC 61850 data items. These data items can be accessed through the
“UR” MMS domain. IEC 61850 data can be accessed through the “IECDevice” MMS domain (IEC 61850 logical device).
C.1.8 TCP CONNECTION TIMING
A built-in TCP/IP connection timeout of two minutes is employed by the L60 to detect ‘dead’ connections. If there is no data
traffic on a TCP connection for greater than two minutes, the connection will be aborted by the L60. This frees up the con-
nection to be used by other clients. Therefore, when using IEC 61850 reporting, clients should configure report control
block items such that an integrity report will be issued at least every 2 minutes (120000 ms). This ensures that the L60 will
not abort the connection. If other MMS data is being polled on the same connection at least once every 2 minutes, this tim-
eout will not apply.
C.1.9 LOGICAL NODE MMXU DATA MAPPING
The mapping of L60 relay data to IEC 61850 MMXU data is performed on a per-source basis. MMXU1 data originates from
L60 source 1, MMXU2 data originates from L60 source 2, etc.
C.1.10 LOGICAL NODE GGIO DATA MAPPING
Logical node GGIO1 data is mapped using the L60 Flexstate parameters. Each single point indication in GGIO1 can be
selected using the corresponding Flexstate parameter setting. For example, the value of GGIO1 point “Ind3” is determined
from the FlexLogic™ operand selected in the Flexstate parameter 3 setting. Thus, GGIO1 data can originate as any Flex-
Logic™ parameter.
Logical node GGIO2 data is mapped to the L60 virtual inputs. Each single point control in GGIO2 is mapped to a virtual
input. For example, GGIO2 control point SPCSO3 is mapped to virtual input 3.
C.1.11 OTHER LOGICAL NODE MAPPING
All other IEC 61850 logical nodes (with the exception of PTRC) are associated with standard UR-series relay protection
elements and features. The following mapping is used (for applicable elements):
• PDIS: phase distance, ground distance
• PIOC: phase instantaneous overcurrent, neutral instantaneous overcurrent, ground instantaneous overcurrent, nega-
tive sequence instantaneous overcurrent
• PTOC: phase time overcurrent, neutral time overcurrent, ground time overcurrent, negative sequence time overcur-
rent, neutral directional overcurrent, negative sequence directional overcurrent
• PTUV: phase undervoltage, auxiliary undervoltage, third harmonic neutral undervoltage
• PTOV: phase overvoltage, neutral overvoltage, auxiliary overvoltage, negative sequence overvoltage
• RBRF: breaker failure
• RREC: autoreclosure
• RPSB: power swing detection
• RFLO: fault locator
• XCBR: breaker control