6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 1164 -
11.3.1
About protocol
The IED dynamically generates Logical Nodes, Data sets and control blocks defined in CID file
upon boot-up. We shall discuss the configuration procedure to set the data in CID files later.
For the IEC 61850 communication, the IED consists of multiple logical devices and logical
nodes. The user should configure the 61850 Data Model to perform a required function for the
protection and control.
Modular approach achieves data transfer between devices in the IEC 61850 standard. All
function in the IEC 61850 network are grouped into smaller objects called Logical Nodes (LNs),
which contains process objects related data and attributes of a logical device protection and
control function. Logical Node Zero (LLN0) represents specific information of the logical device.
Logical Node Physical Device (LPHD) represents specific information of a physical device. A
generic device is called Physical device (PD). The LPHD contains the properties of the PD. A
specific function in the IED is represented as domain specific LN. The domain specific LN
contains the essential function for target devices in the IEC 61850 network.
LN data model defines the abstract syntax and semantics of the information exchanged
between PDs. The relation between data object classes, data types, data attributes and
abstract data objects are provided in the LN data model. The LN data model is mapped to
Manufacturing Message Specification (MMS) and Generic Object Oriented Substation Event
(GOOSE) functions. Table 11.3-1shows the description of LNs.
Table 11.3-1 LN descripion
LN
Description
Actual device
corresponding to LN
LLNO
Logical node zero represents logical device specific
information
Operation state of BCU
State of 43 switch
LPHD
Logical node physical device represents physical
device specific information
BCU,BCPU
Domain
specific LN
Domain specific LN represents protection relay
specific function
XCBR,CSWI
GGIO
Generic input output logical node is used if essential
signals are not defined in the extended logical nodes.
Based on client
requirements
All LN classes (LLN0 and domain specific LN) receive the mandatory data of the common LN
except LPHD. Table 11.3-2 exemplifies Function, Logical node and Communication service
used in the IEC 61850 communication.
Summary of Contents for GR 200 Series
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Page 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Page 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
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