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IEC 61850 - Communication networks and systems in substations
Informative tutorial on a small subset of the object models
NOTE 1 These pdf files (html pages) are intended to provide a hypertext version of an excerpt of the main concepts and definitions of Parts IEC 61850-7-4, IEC 61850-7-3, and IEC 61850-7-2.
NOTE 2 The content of these files is informative only. They do in no way replace the normative definitions contained in the above referenced documents.
There are the following pages to browse and study a small subset of the object models:
1. Modeling approach of logical nodes (one page - pdf)
2. IEC 61850-7-2 Overview of ACSI models
3. Small subset of the logical nodes of 61850-7-4
4. Small subset of the common data classes in a single window
Parts of the standard
● IEC 61850-1, Part 1: Introduction and overview● IEC 61850-2, Part 2: Glossary● IEC 61850-3, Part 3: General requirements● IEC 61850-4, Part 4: System and project management● IEC 61850-5, Part 5: Communication requirements for functions and devices models● IEC 61850-6, Part 6: Configuration description language for communication in electrical
substations related to IEDs● IEC 61850-7-1, Part 7-1: Basic communication structure for substation and feeder equipment -
Principles and models● IEC 61850-7-2, Part 7-2: Basic communication structure for substation and feeder equipment -
Abstract communication service interface (ACSI)● IEC 61850-7-3, Part 7-3: Basic communication structure for substation and feeder equipment -
Common data classes● IEC 61850-7-4, Part 7-4: Basic communication structure for substation and feeder equipment -
Compatible logical node classes and data classes● IEC 61850-8-1, Part 8-1: Specific communication service mapping (SCSM) - Mappings to MMS
(ISO/IEC 9506-1 and ISO/IEC 9506-2) and to ISO/IEC 8802-3● IEC 61850-9-1, Part 9-1: Specific communication service mapping (SCSM) - Sampled values
over serial unidirectional multidrop point to point link● IEC 61850-9-2, Part 9-2: Specific communication service mapping (SCSM) - Sampled values
over ISO/IEC 8802-3● IEC 61850-10, Part 10: Conformance testing
The web pages and the corresponding xml files have been created byKarlheinz Schwarz, SCC. ([email protected])
SCC does not take any responsibility as to the content of the files contained in the ZIP file
"IEC61850_HTML.zip" (html, xml and jpg) or the "browsable" pdf file and linked on this page respectively.
Karlheinz Schwarz, based in Karlsruhe, Germany, is a consultant for the power systems control industry. He is involved in several Working Groups within IEC TC 57, TC 65, and TC 88. He is a well-known authority on the standardization and application of advanced information and communication technologies.
© IEC 2004
Version 1.1 2004-03-22
© SCC Draft 0-2 2004-01-03
What is a Logical Node? By Karlheinz Schwarz, SCC, [email protected]
Motivation The standard IEC 61850 „Communication networks and systems in substations“ and the coming standard IEC 61400-25 „Communications for monitoring and control of wind power plants“ use the concept of Logical Nodes (LN) as a key element to define the information of a device to be communicated. This paper introduces the concept of LNs.
Modeling oncept
IEC 61850 models substation equipment and func-tions (focus is on protection)
IEC 61400-25 models components of wind power plants like rotor, generator, gear box, nacelle etc. (focus is on SCADA)
A key issue are the LNs representing functions or equipment used in power systems. Each LN provides a list of well organized and named information. The LN “XCBR5” represents the “circuit breaker” number 5 with the data “Pos” (Position) and “Mode”. Services defined in IEC 61850-7-2 allow the exchange of this information.
Map
ping
...
(Virtual World)
LNLNLNLN
PosSCSMIEC 61850-8-1
TCP/IPNetwork
MMS
IEC 61850-7-2Services
logical device (Bay)
Mode
XCBR5
IEC 61850-7-4 logical node (circuit breaker)
IEC 61850-7-4 data (Position)
virtualisation
Real devices in a substation
IEC 61850-6configuration file, XML
The substation configuration language in part 6 supports the engineering process.
Example LN “MMXU”
IEC 61850-7-4 defines some 90 LNs 500 Data 100 Attributes 10 Service models
IEC 61400-25 adds some 10 LNs 200 Data 100 Attributes
The measurement LN “MMXU” represents power, voltages, currents, and impedances in a three-phase system. The values can be communicated by various services
TotWTotVArTotVATotPFHzPPVPhVAWVArVAPFZ
Total Active Power (Total P)Total Reactive Power (Total Q)Total Apparent Power (Total S)Average Power factor (Total PF)FrequencyPhase to phase voltages (VL1VL2, …)Phase to ground voltages (VL1ER, …)Phase currents (IL1, IL2, IL3)Phase active power (P)Phase reactive power (Q)Phase apparent power (S)Phase power factorPhase Impedance
Logical Node „MMXU“
current / voltage samples from instrument transformers represented by LN “PhsBTCTR” for current transformer of phase B (e.g. by sampled value exchange services of IEC 61850-7-2 SV)
LN PhsBTCTRAmp
LN PhsBTCTRAmp
LN PhsBTVTRVol
LN PhsBTVTRVol
IEC 61850-7-2
LogLog
ReadRead
ReportReport
ConfigureConfigure
RetrieveModel
RetrieveModel
QueryLogQueryLog
phsA.cValphsB.cValphsC.cVal
deadbanded valueangle
SV
SV SV
SV
IEC 61850-7-2
RCBRCB
The “MMXU” LN offers hundreds of values: measured (process) values, configuration val-ues, description, and substitution values. These values can be communicated by various services like read (polling), notification (publish/subscribe), logging and query.
ACSI overview and basic concepts
General
The models of the ACSI provide
● the specification of a basic model for the definition of the substation-specific information models contained in IEC 61850-7-3 (common DATA classes) and IEC 61850-7-4 (compatible LOGICAL-NODE classes and compatible DATA classes) and
● the specification of information exchange service models.
The information models and information exchange services are interwoven. From a descriptive point of view, the two aspects are separated to some degree (see the excerpt shown in Figure 1). The common models (for example, LOGICAL-NODE and DATA classes including their services) are applied in IEC 61850-7-3 and IEC 61850-7-4 to define many specialized information models - the substation automation models.
Figure 1 - Excerpt of conceptual model
Other service models required for substation automation systems (for example, DATA-SET and reporting provide specific information exchange services) are also defined in this part of the standard; these models are linked to LOGICAL-NODEs and DATA. The information exchange services are completely defined in the ACSI. The information models defined in IEC 61850-7-4 reference the services defined in the various models of the ACSI.
Overview of basic information models
The conceptual models to build the domain-specific information models are:
● SERVER - represents the external visible behaviour of a device. All other ACSI models are part of the server.NOTE 1 A server has two roles: to communicate with a client (most service models in IEC 61850 provide communication with client devices) and to send information to peer devices (for example, for sampled values).
● LOGICAL-DEVICE (LD) - contains the information produced and consumed by a group of domain-specific application functions; functions are defined as LOGICAL-NODEs.
● LOGICAL-NODE (LN) - contains the information produced and consumed by a domain-specific application function, for example, overvoltage protection or circuit-breaker.
● DATA - provide means to specify typed information, for example, position of a switch with quality information and timestamp, contained in LOGICAL-NODEs.
Each of these information models is defined as a class. The classes comprise attributes and services. The conceptual class diagram of the ACSI is depicted in Figure 2.
NOTE 2 The classes are major building blocks that provide the framework for substation automation device models. Additional details on the modelling and relations between IEC 61850-7-4, IEC 61850-7-3, and this part of IEC 61850 can be found in IEC 61850-7-1.
Click on boxes to get the definitions!
Figure 2 - Basic conceptual class model of the ACSIClick on boxes to get the definitions!
NOTE 3 The numbers in the circles indicate the respective clauses in this part of IEC 61850.
The Name class is inherited by the classes LOGICAL-DEVICE, LOGICAL-NODE, DATA, and DataAttribute.
EXAMPLE In an implementation the logical device, logical node, data, and data attribute have each an object name (instance name) which is a unique name among classes of the same container to which they belong. In addition, each of the four has an ObjectReference (path name) which is a concatenation of all object names from each container. The four object names (one per column) can be concatenated.
Logical device Logical node Data Data attribute
Object name "Atlanta_HV5" "XCBR1" "Pos" "stVal"
Description High-voltage station 5 Circuit-breaker 1 Position Status value
Overview of the other service models
In addition to the models listed above, the ACSI comprises the following models that provide services operating on data, data attributes, and data sets.
● DATA-SET - permits the grouping of data and data attributes. Used for direct access and for reporting and logging.
● Substitution - supports replacement of a process value by another value. ● SETTING-GROUP-CONTROL-BLOCK - defines how to switch from one set of setting values to another
one and how to edit setting groups. ● REPORT-CONTROL-BLOCK and LOG-CONTROL-BLOCK - describe the conditions for generating
reports and logs based on parameters set by the client. Reports may be triggered by changes of process data values (for example, state change or dead band) or by quality changes. Logs can be queried for later retrieval. Reports may be sent immediately or deferred. Reports provide change-of-state and sequence-of-events information exchange.
● control blocks for generic substation event (GSE) - supports a fast and reliable system-wide distribution of input and output data values; peer-to-peer exchange of IED binary status information, for example, a trip signal.
● control blocks for transmission of sampled values - fast and cyclic transfer of samples, for example, of instrument transformers.
● control - describes the services to control, for example, devices. ● time and time synchronization - provides the time base for the device and system. ● file transfer - defines the exchange of large data blocks such as programs.
An overview of the conceptual service model of the ACSI is shown in Figure 3.
Click on boxes to get the definitions!
Figure 3 - Conceptual service model of the ACSIClick on boxes to get the definitions!
NOTE 1 The numbers in the circles indicate the respective clauses in this part of IEC 61850.
NOTE 2 The class diagrams are conceptual. Details are defined in the respective clauses. Comprehensive diagrams are contained in IEC 61850-7-1. The DATA class may be defined recursively. The operations for substitution and control are restricted to the lowest level in the DATA class. The DataAttributes may be defined recursively as well.
The logical node is one of the major building blocks that has associations to most of the other information exchange models, for example, report control, log control, and setting control.
Any other information exchange service model, for example, report control, log control, and setting control shall inherit the ObjectName and ObjectReference as depicted in Figure 2.
NOTE 3 The class models and services are defined using an object-oriented approach allowing for the mapping
of class models and services to different application layer and middle ware solutions.
Overview of ACSI services
The complete list of ACSI classes and their services is shown in Table 1.
Table 1 - ACSI classes
SERVER model (Clause 6)GetServerDirectory
ASSOCIATION model (Clause 7)AssociateAbortRelease
LOGICAL-DEVICE model (Clause 8)GetLogicalDeviceDirectory
LOGICAL-NODE model (Clause 9)GetLogicalNodeDirectoryGetAllDataValues
DATA model (Clause 10)GetDataValuesSetDataValuesGetDataDirectoryGetDataDefinition
DATA-SET model (Clause 11)GetDataSetValuesSetDataSetValuesCreateDataSetDeleteDataSetGetDataSetDirectory
Substitution model (Clause 12)SetDataValuesGetDataValues
SETTING-GROUP-CONTROL-BLOCK model (Clause 13)SelectActiveSGSelectEditSGSetSGValuesConfirmEditSGValuesGetSGValuesGetSGCBValues
REPORT-CONTROL-BLOCK and LOG-CONTROL-BLOCK model (Clause 14)BUFFERED-REPORT-CONTROL-BLOCK:ReportGetBRCBValuesSetBRCBValuesUNBUFFERED-REPORT-CONTROL-BLOCK:Report
LOG-CONTROL-BLOCK model:GetLCBValuesSetLCBValuesQueryLogByTimeQueryLogAfterGetLogStatusValues
Generic substation event model —GSE (Clause 15)GOOSESendGOOSEMessageGetGoReferenceGetGOOSEElementNumberGetGoCBValuesSetGoCBValuesGSSESendGSSEMessageGetGsReferenceGetGSSEDataOffsetGetGsCBValuesSetGsCBValues
Transmission of sampled values model(Clause 16)MULTICAST-SAMPLE-VALUE-CONTROL-BLOCK:SendMSVMessageGetMSVCBValuesSetMSVCBValuesUNICAST-SAMPLE-VALUE-CONTROL-BLOCK:SendUSVMessageGetUSVCBValuesSetUSVCBValues
Control model (Clause 17)SelectSelectWithValueCancelOperateCommandTerminationTimeActivatedOperate
Time and time synchronization (Clause 18)TimeSynchronization
FILE transfer model (Clause 20)GetFileSetFileDeleteFileGetFileAttributeValues
GetURCBValuesSetURCBValues
5 ObjectName
The ObjectName shall specify a unique instance name among instances of a class owned by the same parent class with a type as specified in Table 3 - ObjectName type
ObjectName type
Attribute name Attribute type Value/value range/explanation Used by
ObjectName VISIBLE STRING32 Name of an instance of a class of a single hierarchy level
IEC 61850-7-4IEC 61850-7-3IEC 61850-7-2
NOTE Clause 19 specifies constraints on the use of the type ObjectName.
5 ObjectReference
Instances of classes in the hierarchical information model (ACSI class hierarchy of logical device, logical node, data, data attributes) shall be constructed by the concatenation of all instance names comprising the whole path-name of an instance of a class that identifies the instance uniquely. The type of the ObjectReference shall be as specified in Table 4.
Table 4 - ObjectReference type
ObjectReference type
Attribute name Attribute type Value/value range/explanation Used by
ObjectReference VISIBLE STRING255 ObjectReference comprises the whole path-name of an instance of a class that identifies the instance uniquely
IEC 61850-7-2
The ObjectReference syntax shall be:
LDName/LNName[.Name[. ...]]
The "/" shall separate the instance name of a logical device (LDName) from the name of an instance of a logical node (LNName). The "." shall separate the further names in the hierarchy. The "[ ]" shall indicate an option. The inner square bracket "[. ...]" shall indicate further names of recursively nested definitions.
NOTE 1 In any case where the context of the text provides sufficient information that an instance of a class is meant, the term "instance of" is not used.
NOTE 2 Clause 19 specifies constraints on the use of the type ObjectReference.
6 Server
The class SERVER shall represent the externally visible behaviour of a device. The SERVER shall be a composition as defined in Table 11.
NOTE 1 For simple devices the server may comprise just one logical device with the GOOSE control model with no other service.
Table 11 - SERVER class definition
SERVER class
Attribute name Attribute type Value/value range/explanation
ServiceAccessPoint [1..n] (*) (*) Type is SCSM specific
LogicalDevice [1..n] LOGICAL-DEVICE
File [0..n] FILE
TPAppAssociation [0..n] TWO-PARTY-APPLICATION-ASSOCIATION
MCAppAssociation [0..n] MULTICAST-APPLICATION-ASSOCIATION
ServicesGetServerDirectory
NOTE 2 The server's relationship to the underlying communication system and the concrete implementation depend on the SCSM (specific communication service mapping, see IEC 61850-8-x and IEC 61850-9-x) used. Network management (as part of an SCSM), device management, and system management are outside the scope of IEC 61850-7-2.
8 Logical Device
The LOGICAL-DEVICE (LD) shall be a composition of LOGICAL-NODE as defined in Table 14.
NOTE- A LOGICAL-DEVICE can be used simply as a container of a group of LOGICAL-NODEs or as a device that functions as a gateway or proxy. Details on the use of LOGICAL-DEVICE can be found in IEC 61850-7-1.
Table 14 - LOGICAL-DEVICE (LD) class definition
LOGICAL-DEVICE class
Attribute name Attribute type Value/value range/explanation
LDName ObjectName Instance name of an instance of LOGICAL-DEVICE
LDRef ObjectReference Path-name of an instance of LOGICAL-DEVICE
LogicalNode [3..n] LOGICAL-NODE IEC 61850-7-4 specifies specialized classes of LOGICAL-NODE
Services
GetLogicalDeviceDirectory
9 LOGICAL NODE
The LOGICAL-NODE shall be a composition of DATA, DATA-SET, BRCB, URCB, LCB, LOG, SGCB, GoCB, GsCB, MSVCB, and USVCB as defined in Table 15.
Table 15 - LOGICAL-NODE (LN) class definition
LOGICAL-NODE class
Attribute name Attribute type Explanation
LNName ObjectName Instance name of an instance of LOGICAL-NODE
LNRef ObjectReference Path-name of an instance of LOGICAL-NODE
Data [1..n] DATA
DataSet [0..n] DATA-SET
BufferedReportControlBlock [0..n] BRCB
UnbufferedReportControlBlock [0..n] URCB
LogControlBlock [0..n] LCB
IF compatible LN class defined in IEC 61850-7-4 equals LLN0
SettingGroupControlBlock [0..1] SGCB
Log [0..1] LOG
GOOSEControlBlock [0..n] GoCB
GSSEControlBlock [0..n] GsCB
MulticastSampledValueControlBlock [0..n] MSVCB
UnicastSampledValueControlBlock [0..n] USVCB
Services
GetLogicalNodeDirectoryGetAllDataValues
NOTE 1 IEC 61850-7-4 defines specialized logical node classes - the compatible logical node classes, for example, XCBR representing circuit-breakers.
The definition of LOGICAL-NODEs for the substation-application domain is refined by the definition of specific DATAin IEC 61850-7-4. The definitions in IEC 61850-7-4 (and IEC 61850-7-3 for the common DATA classes) shall be taken into account to get the comprehensive definition of substation-domain-specific LOGICAL-NODEs.
NOTE 2 IEC 61850-7-4 defines further attributes for LOGICAL-NODEs; for example,, the mode (behaviour: ON, BLOCKED, TEST, etc.) of the substation-specific LOGICAL-NODE is defined in IEC 61850-7-4. The state model of a LOGICAL-NODE is modelled as a specific DATA (named Mod).
10 Data
The DATA shall have the structure defined in Table 16.
Table 16 - DATA class definition
DATA class
Attribute name Attribute type Value/value range/explanation
DataName ObjectName Instance name of an instance of DATA,for example, PhV (1st level), phsA (2nd level)
DataRef ObjectReference Path-name of an instance of DATA,for example, MMXU1.PhV orfor example, MMXU1.PhV.PhsA
Presence BOOLEAN Indicates mandatory/optional
DataAttribute [0..n]DataAttributeTypeFunctionalConstraintTrgOp [0..n]
DATypeFCTriggerConditions
For example, Vector class of IEC 61850-7-3for example, MXfor example, dchg
Specializations of DATA
CompositeCDC [0..n] DATA For example, WYE class of IEC 61850-7-3
SimpleCDC [0..n] COMMON-DATA For example, CMV class of IEC 61850-7-3
Services
GetDataValuesSetDataValuesGetDataDirectoryGetDataDefinition
An instance of a DATA class may contain zero or more instances of a CompositeCDC, SimpleCDC or a DataAttribute. However, they cannot all be absent, so at least one of these elements shall be present.
NOTE 5 The structure of a DATA class is recursive since a CompositeCDC is also of type DATA class. The level of recursion may be restricted by a SCSM, so the number of levels of recursion of CompositeCDCs is normally no greater than 1.
NOTE 6 DATA or part of a DATA may be referenced in a DATA-SET. The persistent existence of DATA is expected as long as they are referenced as members of a DATA-SET. A system has to take special measures to ensure their existence.
10 Data Attribute Type
The DAType shall be as defined in Table 17.
Table 17 - DAType definition
DAType
Attribute name Attribute type Value/value range/explanation
DATName ObjectName Instance name of an instance of DAType,for example, cVal (1stlevel), mag (2nd level), f (3rd level)
DATRef ObjectReference Path-name of an instance of DATypefor example, MMXU1.PhV.phsA.cValfor example, MMXU1.PhV.phsA.cVal.mag orfor example, MMXU1.PhV.phsA.cVal.mag.f
Presence BOOLEAN Indicates mandatory/optional
Specializations of DAType
CompositeComponent [0..n] DAType For example, mag in Vector class of IEC 61850-7-3for example, f in AnalogueValue of IEC 61850-7-3
PrimitiveComponent [0..1] BasicType For example, FLOAT32 class of IEC 61850-7-3 for f
NOTE 1 An instance of a DAType may contain 0 or more instances of a CompositeComponent or a PrimitveDAT. However, they cannot both be absent, so at least one of these elements must be present.
NOTE 2 The structure of a DAType is recursive since a CompositeComponent is also of type DAType. The level of recursion may be restricted by a SCSM, so the number of levels of recursion of CompositeComponents is normally no greater than 2.
11 DATA-SET class syntax
The DATA-SET shall have the structure as defined in Table 21.
Table 21 - DATA-SET (DS) class definition
DATA-SET class
Attribute name Attribute type Value/value range/explanation
DSName ObjectName Instance name of an instance of DATA-SET
DSRef ObjectReference Path-name of an instance of DATA-SET
DSMemberRef [1..n] (*) (*) Functionally constrained data (FCD) or functionally constrained data attribute (FCDA)
Services
GetDataSetValuesSetDataSetValuesCreateDataSetDeleteDataSetGetDataSetDirectory
13 SETTING-GROUP-CONTROL-BLOCK class model
The SGCB shall have the structure defined in Table 22.
Clients should use the existence of a SGCB to determine if the LOGICAL-DEVICE contains SGs.
Table 22 - SGCB class definition
SGCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
SGCBName ObjectName - - Instance name of an instance of SGCB
SGCBRef ObjectReference - - Path-name of an instance of SGCB
NumOfSG INT8U SP - n = NumOfSG
ActSG INT8U SP dchg Allowable range: 1 ... n
EditSG INT8U SP dchg Allowable range: 0 ... n
CnfEdit BOOLEAN SP dchg
LActTm TimeStamp SP dchg
Services
SelectActiveSGSelectEditSGSetSGValuesConfirmEditSGValuesGetSGValuesGetSGCB Values
Values of the attributes of the instances of SGCB shall be configured.
14 BUFFERED-REPORT-CONTROL-BLOCK (BRCB)
The BRCB class shall have the structure defined in Table 23.
Table 23 - BRCB class definition
BRCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
BRCBName ObjectName - - Instance name of an instance of BRCB
BRCBRef ObjectReference - - Path-name of an instance of BRCB
Specific to report handler
RptID VISIBLE STRING65 BR -
RptEna BOOLEAN BR dchg
DatSet ObjectReference BR dchg
ConfRev INT32U BR dchg
OptFlds PACKED LIST BR dchg
sequence-number BOOLEAN
report-time-stamp BOOLEAN
reason-for-inclusion BOOLEAN
data-set-name BOOLEAN
data-reference BOOLEAN
buffer-overflow BOOLEAN
entryID BOOLEAN
conf-revision BOOLEAN
BufTm INT32U BR dchg
SqNum INT16U BR -
TrgOp TriggerConditions BR dchg
IntgPd INT32U BR dchg 0.. MAX; 0 implies no integrity report.
GI BOOLEAN BR -
PurgeBuf BOOLEAN BR -
EntryID EntryID BR -
TimeOfEntry EntryTime BR -
Services
ReportGetBRCBValuesSetBRCBValues
These attributes determine the service procedures of the Report service. The impact of the various values shall be as defined in the following attribute definitions.
14 UNBUFFERED-REPORT-CONTROL-BLOCK (BRCB)
The URCB class shall have the structure defined in Table 25.
Table 25 - URCB class definition
URCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
URCBName ObjectName - - Instance name of an instance of URCB
URCBRef ObjectReference - - Path-name of an instance of URCB
Specific to report handler
RptID VISIBLE STRING65 RP -
RptEna BOOLEAN RP dchg
Resv BOOLEAN RP -
DatSet ObjectReference RP dchg
ConfRev INT32U RP dchg
OptFlds PACKED LIST RP dchg
reserved BOOLEAN
sequence-number BOOLEAN
report-time-stamp BOOLEAN
reason-for-inclusion BOOLEAN
data-set-name BOOLEAN
data-reference BOOLEAN
reserved BOOLEAN Used for buffer-overflow in BRCB
reserved BOOLEAN Used for entryID in BRCB
conf-revision BOOLEAN
BufTm INT32U RP dchg 0 .. MAX
SqNum INT8U RP -
TrgOp TriggerConditions RP dchg
IntgPd INT32U RP dchg 0.. MAX
GI BOOLEAN BR -
Services
ReportGetURCBValuesSetURCBValues
Except URCBName, URCBRef, RptEna, and Resv all other attributes shall be as defined for the BRCB in 14.2.2.
14 LOG-CONTROL-BLOCK class model
The LCB shall control the procedures that are required for storing values of DataAttribute (the log entry) into a LOG. Each enabled LCB shall associate DATA-SET with a LOG. Changes in a value of a member of a DATA-SET shall be stored as LOG entry. Multiple LCBs allow multiple DATA-SETs to feed a LOG.
It shall be the responsibility of access control, to prevent unauthorized clients to modify an LCB.
NOTE The internal notification, local storage mechanism, internal formats, etc. for log entries are all local issues and outside the scope of this part of IEC 61850.
The LCB shall have the structure specified in Table 26.
Table 26 - LCB class definition
LCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
LCBName ObjectName - - Instance name of an instance of LCB
LCBRef ObjectReference - - Path-name of an instance of LCB
Specific to log handler
LogEna BOOLEAN LG dchg
DatSet ObjectReference LG dchg
OptFlds PACKED LIST LG dchg
reason-for-inclusion BOOLEAN
TrgOp TriggerConditions LG dchg Valid values for TrgOp of type TriggerConditions shall be dchg, qchg, dupd, and integrity.
IntgPd INT32U LG dchg 1..MAX; 0 implies no integrity logging.
Specific to building the log
LogRef ObjectReference LG
Services
GetLCBValuesSetLCBValues
14 LOG
The LOG shall be filled on a first-in first-out basis. When the list of log entries reaches a point where the stored data reaches the maximal size of the log, the oldest log entry shall be overwritten. This action shall have no impact to the further incrementing of the EntryID of the added log entries.
The LOG shall have the structure defined in Table 27.
Table 27 - LOG class definition
LOG class
Attribute name Attribute type FC Value/value range/explanation
LogName ObjectName Instance name of an instance of LOG
LogRef ObjectReference Path-name of an instance of LOG
OldEntrTm TimeStamp LG
NewEntrTm TimeStamp LG
OldEntr INT32U LG
NewEntr INT32U LG
Entry [1..n]
TimeOfEntry EntryTime
EntryID EntryID
EntryData [1..n]
DataRef ObjectReference
Value (*) (*) type(s) depend on the definition of common data classes in IEC 61850-7-3
ReasonCode TriggerConditions If reason-for-inclusion (="TRUE)" in optFlds.ReasonCode general-interrogation shall never occur as TRUE.
Services
QueryLogByTimeQueryLogAfterGetLogStatusValues
15 GOOSE-CONTROL-BLOCK (GoCB) class
The GoCB shall be as defined in Table 28.
Table 28 - GOOSE control block class definition
GoCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
GoCBName ObjectName GO - Instance name of an instance of GoCB
GoCBRef ObjectReference GO - Path-name of an instance of GoCB
GoEna BOOLEAN GO dchg Enabled (TRUE) | disabled (FALSE)
AppID VISIBLE STRING65 GO Attribute that allows a user to assign a system unique identification for the application that is issuing the GOOSE. DEFAULT GoCBRef
DatSet ObjectReference GO dchg
ConfRev INT32U GO dchg
NdsCom BOOLEAN GO dchg
Services
SendGOOSEMessageGetGoReferenceGetGOOSEElementNumberGetGoCBValuesSetGoCBValues
15 Generic substation state event (GSSE) control block (GsCB)
The GsCB shall be as defined in Table 30.
Table 30 - GSSE control block class definition
GsCB class
Attribute name Attribute type FC Value/value range/explanation
GsCBName ObjectName Instance name of an instance of GsCB
GsCBRef ObjectReference Path-name of an instance of GsCB
GsEna BOOLEAN GS Enabled (TRUE) | disabled (FALSE)
AppID VISIBLE STRING65 GS
DataLabel [1..n] VISIBLE STRING65 GS
LSentData [1..n] GSSEData GS Derived from GSSE message
Services
SendGSSEMessageGetGsReferenceGetGSSEDataOffsetGetGsCBValuesSetGsCBValues
16 Transmission of sampled values using multicast (MSVCB)
The transmission of sampled values using multicast (MULTICAST-SAMPLE-VALUE-CONTROL-BLOCK - MSVCB) shall be based on configured configuration in the producer device. The data exchange shall be based
on the multicast application association. To support self-descriptive capabilities, any client may read the attributes of the sampled value control instance. Authorized clients may modify attributes of the sampled value control.
The MSVCB shall be as defined in Table 32.
Table 32 - MSVCB class definition
MSVCB class
Attribute name
Attribute type FC TrgOp Value/value range/explanation
MsvCBNam ObjectName - - Instance name of an instance of MSVCB
MsvCBRef ObjectReference - - Path-name of an instance of MSVCB
SvEna BOOLEAN MS dchg Enabled (TRUE) | disabled (FALSE), DEFAULT FALSE
MsvID VISIBLE STRING65 MS -
DatSet ObjectReference MS dchg
ConfRev INT32U MS dchg
SmpRate INT16U MS - (0..MAX)
OptFlds PACKED LIST MS dchg
refresh-time BOOLEAN
sample-synchronized BOOLEAN
sample-rate BOOLEAN
Services
SendMSVMessageGetMSVCBValuesSetMSVCBValues
16 Transmission of sampled values using unicast (USVCB)
The transmission of sampled values using unicast (UNICAST-SAMPLE-VALUE-CONTROL-BLOCK - USVCB) shall be based on two-party application associations. The subscriber shall establish the association with the producer. The subscriber may then configure the class and enable the transmission of the sampled values with the attribute SvEna. When the association is released, the transmission of the sampled values shall stop and the instance of the control class shall be released.
The samples shall be sent using the two-party application association.
The USVCB shall be as defined in Table 33.
Table 33 - USVCB class definition
USVCB class
Attribute name Attribute FC TrgOp Value/value range/explanation
UsvCBNam ObjectName - - Instance name of an instance of UNICAST-SVC
UsvCBRef ObjectReference - - Path-name of an instance of UNIICAST-SVC
SvEna BOOLEAN US dchg Enabled (TRUE) | disabled (FALSE), DEFAULT FALSE
Resv BOOLEAN US -
UsvID VISIBLE STRING65 US -
DatSet ObjectReference US dchg
ConfRev INT32U US dchg
SmpRate INT16U US dchg (0..MAX)
OptFlds PACKED LIST US dchg
refresh-time BOOLEAN
sample-synchronized BOOLEAN
sample-rate BOOLEAN
Services
SendUSVMessageGetUSVCBValuesSetUSVCBValues
5 ObjectName
The ObjectName shall specify a unique instance name among instances of a class owned by the same parent class with a type as specified in Table 3 - ObjectName type
ObjectName type
Attribute name Attribute type Value/value range/explanation Used by
ObjectName VISIBLE STRING32 Name of an instance of a class of a single hierarchy level
IEC 61850-7-4IEC 61850-7-3IEC 61850-7-2
NOTE Clause 19 specifies constraints on the use of the type ObjectName.
5 ObjectReference
Instances of classes in the hierarchical information model (ACSI class hierarchy of logical device, logical node, data, data attributes) shall be constructed by the concatenation of all instance names comprising the whole path-name of an instance of a class that identifies the instance uniquely. The type of the ObjectReference shall be as specified in Table 4.
Table 4 - ObjectReference type
ObjectReference type
Attribute name Attribute type Value/value range/explanation Used by
ObjectReference VISIBLE STRING255 ObjectReference comprises the whole path-name of an instance of a class that identifies the instance uniquely
IEC 61850-7-2
The ObjectReference syntax shall be:
LDName/LNName[.Name[. ...]]
The "/" shall separate the instance name of a logical device (LDName) from the name of an instance of a logical node (LNName). The "." shall separate the further names in the hierarchy. The "[ ]" shall indicate an option. The inner square bracket "[. ...]" shall indicate further names of recursively nested definitions.
NOTE 1 In any case where the context of the text provides sufficient information that an instance of a class is meant, the term "instance of" is not used.
NOTE 2 Clause 19 specifies constraints on the use of the type ObjectReference.
6 Server
The class SERVER shall represent the externally visible behaviour of a device. The SERVER shall be a composition as defined in Table 11.
NOTE 1 For simple devices the server may comprise just one logical device with the GOOSE control model with no other service.
Table 11 - SERVER class definition
SERVER class
Attribute name Attribute type Value/value range/explanation
ServiceAccessPoint [1..n] (*) (*) Type is SCSM specific
LogicalDevice [1..n] LOGICAL-DEVICE
File [0..n] FILE
TPAppAssociation [0..n] TWO-PARTY-APPLICATION-ASSOCIATION
MCAppAssociation [0..n] MULTICAST-APPLICATION-ASSOCIATION
ServicesGetServerDirectory
NOTE 2 The server's relationship to the underlying communication system and the concrete implementation depend on the SCSM (specific communication service mapping, see IEC 61850-8-x and IEC 61850-9-x) used. Network management (as part of an SCSM), device management, and system management are outside the scope of IEC 61850-7-2.
8 Logical Device
The LOGICAL-DEVICE (LD) shall be a composition of LOGICAL-NODE as defined in Table 14.
NOTE- A LOGICAL-DEVICE can be used simply as a container of a group of LOGICAL-NODEs or as a device that functions as a gateway or proxy. Details on the use of LOGICAL-DEVICE can be found in IEC 61850-7-1.
Table 14 - LOGICAL-DEVICE (LD) class definition
LOGICAL-DEVICE class
Attribute name Attribute type Value/value range/explanation
LDName ObjectName Instance name of an instance of LOGICAL-DEVICE
LDRef ObjectReference Path-name of an instance of LOGICAL-DEVICE
LogicalNode [3..n] LOGICAL-NODE IEC 61850-7-4 specifies specialized classes of LOGICAL-NODE
Services
GetLogicalDeviceDirectory
9 LOGICAL NODE
The LOGICAL-NODE shall be a composition of DATA, DATA-SET, BRCB, URCB, LCB, LOG, SGCB, GoCB, GsCB, MSVCB, and USVCB as defined in Table 15.
Table 15 - LOGICAL-NODE (LN) class definition
LOGICAL-NODE class
Attribute name Attribute type Explanation
LNName ObjectName Instance name of an instance of LOGICAL-NODE
LNRef ObjectReference Path-name of an instance of LOGICAL-NODE
Data [1..n] DATA
DataSet [0..n] DATA-SET
BufferedReportControlBlock [0..n] BRCB
UnbufferedReportControlBlock [0..n] URCB
LogControlBlock [0..n] LCB
IF compatible LN class defined in IEC 61850-7-4 equals LLN0
SettingGroupControlBlock [0..1] SGCB
Log [0..1] LOG
GOOSEControlBlock [0..n] GoCB
GSSEControlBlock [0..n] GsCB
MulticastSampledValueControlBlock [0..n] MSVCB
UnicastSampledValueControlBlock [0..n] USVCB
Services
GetLogicalNodeDirectoryGetAllDataValues
NOTE 1 IEC 61850-7-4 defines specialized logical node classes - the compatible logical node classes, for example, XCBR representing circuit-breakers.
The definition of LOGICAL-NODEs for the substation-application domain is refined by the definition of specific DATAin IEC 61850-7-4. The definitions in IEC 61850-7-4 (and IEC 61850-7-3 for the common DATA classes) shall be taken into account to get the comprehensive definition of substation-domain-specific LOGICAL-NODEs.
NOTE 2 IEC 61850-7-4 defines further attributes for LOGICAL-NODEs; for example,, the mode (behaviour: ON, BLOCKED, TEST, etc.) of the substation-specific LOGICAL-NODE is defined in IEC 61850-7-4. The state model of a LOGICAL-NODE is modelled as a specific DATA (named Mod).
10 Data
The DATA shall have the structure defined in Table 16.
Table 16 - DATA class definition
DATA class
Attribute name Attribute type Value/value range/explanation
DataName ObjectName Instance name of an instance of DATA,for example, PhV (1st level), phsA (2nd level)
DataRef ObjectReference Path-name of an instance of DATA,for example, MMXU1.PhV orfor example, MMXU1.PhV.PhsA
Presence BOOLEAN Indicates mandatory/optional
DataAttribute [0..n]DataAttributeTypeFunctionalConstraintTrgOp [0..n]
DATypeFCTriggerConditions
For example, Vector class of IEC 61850-7-3for example, MXfor example, dchg
Specializations of DATA
CompositeCDC [0..n] DATA For example, WYE class of IEC 61850-7-3
SimpleCDC [0..n] COMMON-DATA For example, CMV class of IEC 61850-7-3
Services
GetDataValuesSetDataValuesGetDataDirectoryGetDataDefinition
An instance of a DATA class may contain zero or more instances of a CompositeCDC, SimpleCDC or a DataAttribute. However, they cannot all be absent, so at least one of these elements shall be present.
NOTE 5 The structure of a DATA class is recursive since a CompositeCDC is also of type DATA class. The level of recursion may be restricted by a SCSM, so the number of levels of recursion of CompositeCDCs is
normally no greater than 1.
NOTE 6 DATA or part of a DATA may be referenced in a DATA-SET. The persistent existence of DATA is expected as long as they are referenced as members of a DATA-SET. A system has to take special measures to ensure their existence.
10 Data Attribute Type
The DAType shall be as defined in Table 17.
Table 17 - DAType definition
DAType
Attribute name Attribute type Value/value range/explanation
DATName ObjectName Instance name of an instance of DAType,for example, cVal (1stlevel), mag (2nd level), f (3rd level)
DATRef ObjectReference Path-name of an instance of DATypefor example, MMXU1.PhV.phsA.cValfor example, MMXU1.PhV.phsA.cVal.mag orfor example, MMXU1.PhV.phsA.cVal.mag.f
Presence BOOLEAN Indicates mandatory/optional
Specializations of DAType
CompositeComponent [0..n] DAType For example, mag in Vector class of IEC 61850-7-3for example, f in AnalogueValue of IEC 61850-7-3
PrimitiveComponent [0..1] BasicType For example, FLOAT32 class of IEC 61850-7-3 for f
NOTE 1 An instance of a DAType may contain 0 or more instances of a CompositeComponent or a PrimitveDAT. However, they cannot both be absent, so at least one of these elements must be present.
NOTE 2 The structure of a DAType is recursive since a CompositeComponent is also of type DAType. The level of recursion may be restricted by a SCSM, so the number of levels of recursion of CompositeComponents is normally no greater than 2.
11 DATA-SET class syntax
The DATA-SET shall have the structure as defined in Table 21.
Table 21 - DATA-SET (DS) class definition
DATA-SET class
Attribute name Attribute type Value/value range/explanation
DSName ObjectName Instance name of an instance of DATA-SET
DSRef ObjectReference Path-name of an instance of DATA-SET
DSMemberRef [1..n] (*) (*) Functionally constrained data (FCD) or functionally constrained data attribute (FCDA)
Services
GetDataSetValuesSetDataSetValuesCreateDataSetDeleteDataSetGetDataSetDirectory
13 SETTING-GROUP-CONTROL-BLOCK class model
The SGCB shall have the structure defined in Table 22.
Clients should use the existence of a SGCB to determine if the LOGICAL-DEVICE contains SGs.
Table 22 - SGCB class definition
SGCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
SGCBName ObjectName - - Instance name of an instance of SGCB
SGCBRef ObjectReference - - Path-name of an instance of SGCB
NumOfSG INT8U SP - n = NumOfSG
ActSG INT8U SP dchg Allowable range: 1 ... n
EditSG INT8U SP dchg Allowable range: 0 ... n
CnfEdit BOOLEAN SP dchg
LActTm TimeStamp SP dchg
Services
SelectActiveSGSelectEditSGSetSGValuesConfirmEditSGValuesGetSGValuesGetSGCB Values
Values of the attributes of the instances of SGCB shall be configured.
14 BUFFERED-REPORT-CONTROL-BLOCK (BRCB)
The BRCB class shall have the structure defined in Table 23.
Table 23 - BRCB class definition
BRCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
BRCBName ObjectName - - Instance name of an instance of BRCB
BRCBRef ObjectReference - - Path-name of an instance of BRCB
Specific to report handler
RptID VISIBLE STRING65 BR -
RptEna BOOLEAN BR dchg
DatSet ObjectReference BR dchg
ConfRev INT32U BR dchg
OptFlds PACKED LIST BR dchg
sequence-number BOOLEAN
report-time-stamp BOOLEAN
reason-for-inclusion BOOLEAN
data-set-name BOOLEAN
data-reference BOOLEAN
buffer-overflow BOOLEAN
entryID BOOLEAN
conf-revision BOOLEAN
BufTm INT32U BR dchg
SqNum INT16U BR -
TrgOp TriggerConditions BR dchg
IntgPd INT32U BR dchg 0.. MAX; 0 implies no integrity report.
GI BOOLEAN BR -
PurgeBuf BOOLEAN BR -
EntryID EntryID BR -
TimeOfEntry EntryTime BR -
Services
ReportGetBRCBValuesSetBRCBValues
These attributes determine the service procedures of the Report service. The impact of the various values shall be as defined in the following attribute definitions.
14 UNBUFFERED-REPORT-CONTROL-BLOCK (BRCB)
The URCB class shall have the structure defined in Table 25.
Table 25 - URCB class definition
URCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
URCBName ObjectName - - Instance name of an instance of URCB
URCBRef ObjectReference - - Path-name of an instance of URCB
Specific to report handler
RptID VISIBLE STRING65 RP -
RptEna BOOLEAN RP dchg
Resv BOOLEAN RP -
DatSet ObjectReference RP dchg
ConfRev INT32U RP dchg
OptFlds PACKED LIST RP dchg
reserved BOOLEAN
sequence-number BOOLEAN
report-time-stamp BOOLEAN
reason-for-inclusion BOOLEAN
data-set-name BOOLEAN
data-reference BOOLEAN
reserved BOOLEAN Used for buffer-overflow in BRCB
reserved BOOLEAN Used for entryID in BRCB
conf-revision BOOLEAN
BufTm INT32U RP dchg 0 .. MAX
SqNum INT8U RP -
TrgOp TriggerConditions RP dchg
IntgPd INT32U RP dchg 0.. MAX
GI BOOLEAN BR -
Services
ReportGetURCBValuesSetURCBValues
Except URCBName, URCBRef, RptEna, and Resv all other attributes shall be as defined for the BRCB in 14.2.2.
14 LOG-CONTROL-BLOCK class model
The LCB shall control the procedures that are required for storing values of DataAttribute (the log entry) into a LOG. Each enabled LCB shall associate DATA-SET with a LOG. Changes in a value of a member of a DATA-SET shall be stored as LOG entry. Multiple LCBs allow multiple DATA-SETs to feed a LOG.
It shall be the responsibility of access control, to prevent unauthorized clients to modify an LCB.
NOTE The internal notification, local storage mechanism, internal formats, etc. for log entries are all local issues and outside the scope of this part of IEC 61850.
The LCB shall have the structure specified in Table 26.
Table 26 - LCB class definition
LCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
LCBName ObjectName - - Instance name of an instance of LCB
LCBRef ObjectReference - - Path-name of an instance of LCB
Specific to log handler
LogEna BOOLEAN LG dchg
DatSet ObjectReference LG dchg
OptFlds PACKED LIST LG dchg
reason-for-inclusion BOOLEAN
TrgOp TriggerConditions LG dchg Valid values for TrgOp of type TriggerConditions shall be dchg, qchg, dupd, and integrity.
IntgPd INT32U LG dchg 1..MAX; 0 implies no integrity logging.
Specific to building the log
LogRef ObjectReference LG
Services
GetLCBValuesSetLCBValues
14 LOG
The LOG shall be filled on a first-in first-out basis. When the list of log entries reaches a point where the stored data reaches the maximal size of the log, the oldest log entry shall be overwritten. This action shall have no impact to the further incrementing of the EntryID of the added log entries.
The LOG shall have the structure defined in Table 27.
Table 27 - LOG class definition
LOG class
Attribute name Attribute type FC Value/value range/explanation
LogName ObjectName Instance name of an instance of LOG
LogRef ObjectReference Path-name of an instance of LOG
OldEntrTm TimeStamp LG
NewEntrTm TimeStamp LG
OldEntr INT32U LG
NewEntr INT32U LG
Entry [1..n]
TimeOfEntry EntryTime
EntryID EntryID
EntryData [1..n]
DataRef ObjectReference
Value (*) (*) type(s) depend on the definition of common data classes in IEC 61850-7-3
ReasonCode TriggerConditions If reason-for-inclusion (="TRUE)" in optFlds.ReasonCode general-interrogation shall never occur as TRUE.
Services
QueryLogByTimeQueryLogAfterGetLogStatusValues
15 GOOSE-CONTROL-BLOCK (GoCB) class
The GoCB shall be as defined in Table 28.
Table 28 - GOOSE control block class definition
GoCB class
Attribute name Attribute type FC TrgOp Value/value range/explanation
GoCBName ObjectName GO - Instance name of an instance of GoCB
GoCBRef ObjectReference GO - Path-name of an instance of GoCB
GoEna BOOLEAN GO dchg Enabled (TRUE) | disabled (FALSE)
AppID VISIBLE STRING65 GO Attribute that allows a user to assign a system unique identification for the application that is issuing the GOOSE. DEFAULT GoCBRef
DatSet ObjectReference GO dchg
ConfRev INT32U GO dchg
NdsCom BOOLEAN GO dchg
Services
SendGOOSEMessageGetGoReferenceGetGOOSEElementNumberGetGoCBValuesSetGoCBValues
15 Generic substation state event (GSSE) control block (GsCB)
The GsCB shall be as defined in Table 30.
Table 30 - GSSE control block class definition
GsCB class
Attribute name Attribute type FC Value/value range/explanation
GsCBName ObjectName Instance name of an instance of GsCB
GsCBRef ObjectReference Path-name of an instance of GsCB
GsEna BOOLEAN GS Enabled (TRUE) | disabled (FALSE)
AppID VISIBLE STRING65 GS
DataLabel [1..n] VISIBLE STRING65 GS
LSentData [1..n] GSSEData GS Derived from GSSE message
Services
SendGSSEMessageGetGsReferenceGetGSSEDataOffsetGetGsCBValuesSetGsCBValues
16 Transmission of sampled values using multicast (MSVCB)
The transmission of sampled values using multicast (MULTICAST-SAMPLE-VALUE-CONTROL-BLOCK - MSVCB) shall be based on configured configuration in the producer device. The data exchange shall be based on the multicast application association. To support self-descriptive capabilities, any client may read the attributes of the sampled value control instance. Authorized clients may modify attributes of the sampled value control.
The MSVCB shall be as defined in Table 32.
Table 32 - MSVCB class definition
MSVCB class
Attribute name
Attribute type FC TrgOp Value/value range/explanation
MsvCBNam ObjectName - - Instance name of an instance of MSVCB
MsvCBRef ObjectReference - - Path-name of an instance of MSVCB
SvEna BOOLEAN MS dchg Enabled (TRUE) | disabled (FALSE), DEFAULT FALSE
MsvID VISIBLE STRING65 MS -
DatSet ObjectReference MS dchg
ConfRev INT32U MS dchg
SmpRate INT16U MS - (0..MAX)
OptFlds PACKED LIST MS dchg
refresh-time BOOLEAN
sample-synchronized BOOLEAN
sample-rate BOOLEAN
Services
SendMSVMessageGetMSVCBValuesSetMSVCBValues
16 Transmission of sampled values using unicast (USVCB)
The transmission of sampled values using unicast (UNICAST-SAMPLE-VALUE-CONTROL-BLOCK - USVCB) shall be based on two-party application associations. The subscriber shall establish the association with the producer. The subscriber may then configure the class and enable the transmission of the sampled values with the attribute SvEna. When the association is released, the transmission of the sampled values shall stop and the instance of the control class shall be released.
The samples shall be sent using the two-party application association.
The USVCB shall be as defined in Table 33.
Table 33 - USVCB class definition
USVCB class
Attribute name Attribute FC TrgOp Value/value range/explanation
UsvCBNam ObjectName - - Instance name of an instance of UNICAST-SVC
UsvCBRef ObjectReference - - Path-name of an instance of UNIICAST-SVC
SvEna BOOLEAN US dchg Enabled (TRUE) | disabled (FALSE), DEFAULT FALSE
Resv BOOLEAN US -
UsvID VISIBLE STRING65 US -
DatSet ObjectReference US dchg
ConfRev INT32U US dchg
SmpRate INT16U US dchg (0..MAX)
OptFlds PACKED LIST US dchg
refresh-time BOOLEAN
sample-synchronized BOOLEAN
sample-rate BOOLEAN
Services
SendUSVMessageGetUSVCBValuesSetUSVCBValues
Small Subset of LN classes defined in IEC 61850-7-4
(The version with all LN classes defined in IEC 61850-7-4 comes with the standards IEC 61850-7-4 AND 7-3 AND 7-2 when you buy these three together)
● The first column (Summary) provides some typical logical nodes with data names and explanation only.
● The second column (IEC) provides almost all information of some typical logical nodes as in IEC 61850-7-4
How to view?
If you want to see one of the following logical nodes (available in HTML Format only!!)together with the Common Data Classes (CDC) AND the Semantic of all names,
with the following three frames:
● Upper frame: logical node (LN), ● Middle frame: the common data class (CDC), and ● Bottom frame: the semantic of the names).
Then navigate through the LNs below (on this page).
Summary IEC
LPHD Summary LPHD IEC Table
CLN Summary CLN IEC Table
LLN0 Summary LLN0 IEC Table
PDIF Summary PDIF IEC Table
PDIR Summary PDIR IEC Table
PDIS Summary PDIS IEC Table
PDOP Summary PDOP IEC Table
PDUP Summary PDUP IEC Table
PFRC Summary PFRC IEC Table
PHAR Summary PHAR IEC Table
PHIZ Summary PHIZ IEC Table
PIOC Summary PIOC IEC Table
PMRI Summary PMRI IEC Table
PMSS Summary PMSS IEC Table
POPF Summary POPF IEC Table
PPAM Summary PPAM IEC Table
PSCH Summary PSCH IEC Table
PSDE Summary PSDE IEC Table
PTEF Summary PTEF IEC Table
PTOC Summary PTOC IEC Table
PTOF Summary PTOF IEC Table
PTOV Summary PTOV IEC Table
PTRC Summary PTRC IEC Table
PTTR Summary PTTR IEC Table
PTUC Summary PTUC IEC Table
PTUV Summary PTUV IEC Table
PUPF Summary PUPF IEC Table
PTUF Summary PTUF IEC Table
PVOC Summary PVOC IEC Table
PVPH Summary PVPH IEC Table
PZSU Summary PZSU IEC Table
RDRE Summary RDRE IEC Table
RADR Summary RADR IEC Table
RBDR Summary RBDR IEC Table
RDRS Summary RDRS IEC Table
RBRF Summary RBRF IEC Table
RDIR Summary RDIR IEC Table
RFLO Summary RFLO IEC Table
RPSB Summary RPSB IEC Table
RREC Summary RREC IEC Table
RSYN Summary RSYN IEC Table
CALH Summary CALH IEC Table
CCGR Summary CCGR IEC Table
CILO Summary CILO IEC Table
CPOW Summary CPOW IEC Table
CSWI Summary CSWI IEC Table
GAPC Summary GAPC IEC Table
GGIO Summary GGIO IEC Table
GSAL Summary GSAL IEC Table
IARC Summary IARC IEC Table
IHMI Summary IHMI IEC Table
ITCI Summary ITCI IEC Table
ITMI Summary ITMI IEC Table
ANCR Summary ANCR IEC Table
ARCO Summary ARCO IEC Table
ATCC Summary ATCC IEC Table
AVCO Summary AVCO IEC Table
MDIF Summary MDIF IEC Table
MHAI Summary MHAI IEC Table
MHAN Summary MHAN IEC Table
MMTR Summary MMTR IEC Table
MMXN Summary MMXN IEC Table
MMXU Summary MMXU IEC Table
MSQI Summary MSQI IEC Table
MSTA Summary MSTA IEC Table
SARC Summary SARC IEC Table
SIMG Summary SIMG IEC Table
SIML Summary SIML IEC Table
SPDC Summary SPDC IEC Table
XCBR Summary XCBR IEC Table
XSWI Summary XSWI IEC Table
TCTR Summary TCTR IEC Table
TVTR Summary TVTR IEC Table
YEFN Summary YEFN IEC Table
YLTC Summary YLTC IEC Table
YPSH Summary YPSH IEC Table
YPTR Summary YPTR IEC Table
ZAXN Summary ZAXN IEC Table
ZBAT Summary ZBAT IEC Table
ZBSH Summary ZBSH IEC Table
ZCAB Summary ZCAB IEC Table
ZCAP Summary ZCAP IEC Table
ZCON Summary ZCON IEC Table
ZGEN Summary ZGEN IEC Table
ZGIL Summary ZGIL IEC Table
ZLIN Summary ZLIN IEC Table
ZMOT Summary ZMOT IEC Table
ZREA Summary ZREA IEC Table
ZRRC Summary ZRRC IEC Table
ZSAR Summary ZSAR IEC Table
ZTCF Summary ZTCF IEC Table
ZTCR Summary ZTCR IEC Table
Small Subset of Common Data Classes from IEC 61850-7-3 (2004-01-03)
SPS
Single point status (SPS) SPS class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
statusstVal BOOLEAN ST dchg TRUE | FALSE M
q Quality ST qchg M
t TimeStamp ST M
substitutionsubEna BOOLEAN SV PICS_SUBST
subVal BOOLEAN SV TRUE | FALSE PICS_SUBST
subQ Quality SV PICS_SUBST
subID VISIBLE STRING64 SV PICS_SUBST
configuration, description and extensiond VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
INS
Integer status (INS) INS class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
statusstVal INT32 ST dchg M
q Quality ST qchg M
t TimeStamp ST M
substitutionsubEna BOOLEAN SV PICS_SUBST
subVal INT32 SV PICS_SUBST
subQ Quality SV PICS_SUBST
subID VISIBLE STRING64 SV PICS_SUBST
configuration, description and extensiond VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
ACT
Protection activation information (ACT) ACT class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
statusgeneral BOOLEAN ST dchg M
phsA BOOLEAN ST dchg O
phsB BOOLEAN ST dchg O
phsC BOOLEAN ST dchg O
neut BOOLEAN ST dchg O
q Quality ST qchg M
t TimeStamp ST M
configuration, description and extensionoperTm TimeStamp CF O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
ACD
Directional protection activation information (ACD) ACD class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
statusgeneral BOOLEAN ST dchg M
dirGeneral ENUMERATED ST dchg unknown | forward | backward | both
M
phsA BOOLEAN ST dchg GC_2 (1)
dirPhsA ENUMERATED ST dchg unknown | forward | backward
GC_2 (1)
phsB BOOLEAN ST dchg GC_2 (2)
dirPhsB ENUMERATED ST dchg unknown | forward | backward
GC_2 (2)
phsC BOOLEAN ST dchg GC_2 (3)
dirPhsC ENUMERATED ST dchg unknown | forward | backward
GC_2 (3)
neut BOOLEAN ST dchg GC_2 (4)
dirNeut ENUMERATED ST dchg unknown | forward | backward
GC_2 (4)
q Quality ST qchg M
t TimeStamp ST M
configuration, description and extensiond VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
BCR
Binary counter reading (BCR) BCR class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
statusactVal INT128 ST dchg M
frVal INT128 ST dupd GC_2 (1)
frTm TimeStamp ST dupd GC_2 (1)
q Quality ST qchg M
t TimeStamp ST M
configuration, description and extensionunits Unit CF see Annex A O
pulsQty FLOAT32 CF M
frEna BOOLEAN CF GC_2 (1)
strTm TimeStamp CF GC_2 (1)
frPd INT32 CF GC_2 (1)
frRs BOOLEAN CF GC_2 (1)
d VISIBLE STRING255 DC O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
MV
Measured value (MV) MV class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
measured attributesinstMag AnalogueValue MX O
mag AnalogueValue MX dchg M
range ENUMERATED MX dchgnormal|high|low|high-high|low-low|...
O
q Quality MX qchg M
t TimeStamp MX M
substitutionsubEna BOOLEAN SV PICS_SUBST
subMag AnalogueValue SV PICS_SUBST
subQ Quality SV PICS_SUBST
subID VISIBLE STRING64 SV PICS_SUBST
configuration, description and extensionunits Unit CF see Annex A O
db INT32U CF 0 ... 100 000 O
zeroDb INT32U CF 0 ... 100 000 O
sVC ScaledValueConfig CF AC_SCAV
rangeC RangeConfig CF GC_CON
smpRate INT32U CF O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
SAV
Sampled value (SAV) SAV class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
measured attributesinstMag AnalogueValue MX M
q Quality MX qchg M
t TimeStamp MX O
configuration, description and extensionunits Unit CF see Annex A O
sVC ScaledValueConfig CF AC_SCAV
min AnalogueValue CF O
max AnalogueValue CF O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
WYE
Phase to ground related measured values of a three phase system (WYE) WYE class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
DataphsA CMV GC_1
phsB CMV GC_1
phsC CMV GC_1
neut CMV GC_1
net CMV GC_1
res CMV GC_1
configuration, description and extension
angRef ENUMERATED CF
Va | Vb | Vc | Aa | Ab | Ac | Vab | Vbc | Vca | Vother | Aother
O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
DEL
Phase to phase related measured values of a three phase system (DEL) DEL class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
DataphsAB CMV GC_1
phsBC CMV GC_1
phsCA CMV GC_1
configuration, description and extension
angRef ENUMERATED CF
Va | Vb | Vc | Aa | Ab | Ac | Vab | Vbc | Vca | Vother | Aother
O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
SPC
Controllable single point (SPC) SPC class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
control and status
ctlVal BOOLEAN CO off (FALSE) | on (TRUE)
AC_CO_M
operTm TimeStamp CO AC_CO_O
origin Originator CO, ST AC_CO_O
ctlNum INT8U CO, ST 0..255 AC_CO_O
stVal BOOLEAN ST dchg FALSE | TRUE AC_ST
q Quality ST qchg AC_ST
t TimeStamp ST AC_ST
stSeld BOOLEAN ST dchg AC_CO_O
substitutionsubEna BOOLEAN SV PICS_SUBST
subVal BOOLEAN SV FALSE | TRUE PICS_SUBST
subQ Quality SV PICS_SUBST
subID VISIBLE STRING64 SV PICS_SUBST
configuration, description and extensionpulseConfig PulseConfig CF AC_CO_O
ctlModel CtlModels CF M
sboTimeout INT32U CF AC_CO_O
sboClass SboClasses CF AC_CO_O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
DPC
Controllable double point (DPC) DPC class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
control and status
ctlVal BOOLEAN CO off (FALSE) | on (TRUE)
AC_CO_M
operTm TimeStamp CO AC_CO_O
origin Originator CO, ST AC_CO_O
ctlNum INT8U CO, ST 0..255 AC_CO_O
stVal CODED ENUM ST dchg intermediate-state | off | on | bad-state
M
q Quality ST qchg M
t TimeStamp ST M
stSeld BOOLEAN ST dchg AC_CO_O
substitutionsubEna BOOLEAN SV PICS_SUBST
subVal CODED ENUM SV intermediate-state | off | on | bad-state
PICS_SUBST
subQ Quality SV PICS_SUBST
subID VISIBLE STRING64 SV PICS_SUBST
configuration, description and extensionpulseConfig PulseConfig CF AC_CO_O
ctlModel CtlModels CF M
sboTimeout INT32U CF AC_CO_O
sboClass SboClasses CF AC_CO_O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
INC
Controllable integer status (INC) INC class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
control and statusctlVal INT32 CO AC_CO_M
operTm TimeStamp CO AC_CO_O
origin Originator CO, ST AC_CO_O
ctlNum INT8U CO, ST 0..255 AC_CO_O
stVal INT32 ST dchg M
q Quality ST qchg M
t TimeStamp ST M
stSeld BOOLEAN ST dchg AC_CO_O
substitutionsubEna BOOLEAN SV PICS_SUBST
subVal INT32 SV PICS_SUBST
subQ Quality SV PICS_SUBST
subID VISIBLE STRING64 SV PICS_SUBST
configuration, description and extensionctlModel CtlModels CF M
sboTimeout INT32U CF AC_CO_O
sboClass SboClasses CF AC_CO_O
minVal INT32 CF O
maxVal INT32 CF O
stepSize INT32U CF 1 ... (maxVal - minVal)
O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
ING
Integer status setting (ING) ING class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
settingsetVal INT32 SP AC_NSG_M
setVal INT32 SG, SE AC_SG_M
configuration, description and extensionminVal INT32 CF O
maxVal INT32 CF O
stepSize INT32U CF 1 ... (maxVal - minVal)
O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
ASG
Analogue setting (ASG) ASG class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
settingsetMag AnalogueValue SP AC_NSG_M
setMag AnalogueValue SG, SE AC_SG_M
configuration, description and extensionunits Unit CF see Annex A O
sVC ScaledValueConfig CF AC_SCAV
minVal AnalogueValue CF O
maxVal AnalogueValue CF O
stepSize AnalogueValue CF 1 ... (maxVal - minVal)
O
d VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
CURVE
Setting curve (CURVE) CURVE class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
settingsetCharact ENUMERATED SP AC_NSG_M
setParA FLOAT32 SP AC_NSG_O
setParB FLOAT32 SP AC_NSG_O
setParC FLOAT32 SP AC_NSG_O
setParD FLOAT32 SP AC_NSG_O
setParE FLOAT32 SP AC_NSG_O
setParF FLOAT32 SP AC_NSG_O
setCharact ENUMERATED SG, SE AC_SG_M
setParA FLOAT32 SG, SE AC_SG_O
setParB FLOAT32 SG, SE AC_SG_O
setParC FLOAT32 SG, SE AC_SG_O
setParD FLOAT32 SG, SE AC_SG_O
setParE FLOAT32 SG, SE AC_SG_O
setParF FLOAT32 SG, SE AC_SG_O
configuration, description and extensiond VISIBLE STRING255 DC Text O
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
DPL
Device name plate (DPL) DPL classAttr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
configuration, description and extensionvendor VISIBLE STRING255 DC M
hwRev VISIBLE STRING255 DC O
swRev VISIBLE STRING255 DC O
serNum VISIBLE STRING255 DC O
model VISIBLE STRING255 DC O
location VISIBLE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
LPL
Logical node name plate (LPL) LPL class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
configuration, description and extensionvendor VISIBLE STRING255 DC M
swRev VISIBLE STRING255 DC M
d VISIBLE STRING255 DC M
dU UNICODE STRING255 DC O
configRev VISIBLE STRING255 DC AC_LN0_M
ldNs VISIBLE STRING255 EX
shall be included in LLN0 only; for example IEC 61850-7-4:2003
AC_LN0_EX
lnNs VISIBLE STRING255 EX AC_DLD_M
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
CSD
Curve shape description (CSD) CSD class
Attr. Name Attr. Type FC TrgOp Value/Value Range M/O/C
configuration, description and extensionxUnit Unit DC M
xD VISIBLE STRING255 DC M
yUnit Unit DC M
yD VISIBLE STRING255 DC M
numPts INT16U DC >1 M
crvPts ARRAY[1..numPts] OF Point DC M
d VISIBLE STRING255 DC M
dU UNICODE STRING255 DC O
cdcNs VISIBLE STRING255 EX AC_DLNDA_M
cdcName VISIBLE STRING255 EX AC_DLNDA_M
dataNs VISIBLE STRING255 EX AC_DLN_M
Table - Semantic of a small subset of data attributes from IEC 61850-7-3 (2004-01-03)
DataSemanticsDAName SemanticsactVal Binary counter status represented as an integer value.
angRefAngle reference. Indicates the quantity that is used as reference for the phase angle. For the indicated quantity, the fundamental frequency (index = 1) is used as reference by convention.
cdcName Name of the common data class. Used together with cdcNs, for details see IEC 61850-7-1.
cdcNs Common data class name space. For details see IEC 61850-7-1.
configRev
Uniquely identifies the configuration of a logical device instance. ConfigRev in LLN0 (at LD level) has to be changed at least on any semantic change of the data model of this LD related to the client functionality. How this is detected and performed is left to the user. Also the semantics of configRev concerning other LNs is left to the user.
crvPts The array with the points specifying a curve shape
ctlModel
Specifies the control model of IEC 61850-7-2 that corresponds to the behaviour of the data. NOTE 2 If a data instance of a control class has no status information associated, then the attribute stVal does not exist. In that case, the value range for ctlModel is restricted to direct-with-normal-security and sbo-with-normal-security.
ctlNum
If the change of the status was caused by a control, the content shall show the control sequence number of the control service. All service primitives belonging to one control sequence shall be identified by the same control sequence number. The use of ctlNum is an issue of the client. The only thing that the server shall do with ctlNum is to include it in the responses to the control model and in the reports about a status change that is caused by a command.
ctlVal
Determines the control activity. For the CDC INC, the integer value 0 shall be transmitted to reset the value. For the CDC BSC, if the data attribute persistent is FALSE, higher and lower refer to one step in the data attribute posVal of the data attribute valWTr. For the CDC ISC, the INTEGER value refers always to a dedicated position in the data attribute posVal of the data attribute valWTr which has to be reached directly.
d Textual description of the data. In case of the common data class LPL, the description refers to the logical node.
dataNs Data name space. For details see IEC 61850-7-1.
db
Deadband. Shall represent a configuration parameter used to calculate all deadbanded attributes (for example mag attribute in the CDC MV). The value shall represent the percentage of difference between max and min in units of 0,001 %. If an integral calculation is used to determine the deadbanded value, the value shall be represented as 0,001 % s.
dirGeneral General direction of the fault. If the faults of individual phases have different directions, this attribute shall be set to both.
dirNeut Direction of the fault for neut.
dirPhsA Direction of the fault for phase A.
dirPhsB Direction of the fault for phase B.
dirPhsC Direction of the fault for phase C.
dU Textual description of the data using unicode characters. For further details, see d.
frEna BOOLEAN value, which controls the freeze, process. If TRUE, freezing shall occur as specified in strTm, frPd and frRs. If FALSE, no freezing shall occur.
frPd Time interval in ms between freeze operations. If frPd is 0, only a single freeze is performed at the time indicated in strTm.
frRs Indicates that counter is to be automatically reset to zero after each freezing process.
frTm Time of the last counter freeze.
frVal Frozen binary counter status represented as an integer value.
general Logical "or" of the phase values, for example trip or start. The attribute shall also be set if not all phases have a fault condition.
hwRev HW-revision.
instMag Magnitude of a the instantaneous value of a measured value.
ldNs Logical device name space. For details see IEC 61850-7-1.
lnNs Logical node name space. For details see IEC 61850-7-1.
location Location, where the equipment is installed.
mag
Deadbanded value. Shall be based on a dead band calculation from instMag as illustrated below. The value of mag shall be updated to the current value of instMag when the value has changed according the configuration parameter db. NOTE 7 The figure above is an example. There may be other algorithms providing a comparable result; for example as an alternate solution, the dead band calculation may use the integral of the change of instMag. The algorithm used is a local issue. NOTE 8 This value mag is typically used to create reports for analogue values. Such a report sent "by exception" is not comparable to the transfer of sampled measured values as
supported by the CDC SAV.
maxMaximum process measurement for which values of i or f are considered within process limits. If the value is higher, q shall be set accordingly (validity = questionable, detailQual = outOfRange).
maxVal Defines together with minVal the setting range for ctlVal (CDC INC, BSC, ISC), setVal (CDC ING) or setMag (CDC APC, ASG).
minMinimum process measurement for which values of i or f are considered within process limits. If the value is lower, q shall be set accordingly (validity = questionable, detailQual = outOfRange).
minVal Defines together with maxVal the setting range for ctlVal (CDC INC, BSC, ISC), setVal (CDC ING) or setMag (CDC APC, ASG).
netNet current. Net current is the algebraic sum of the instantaneous values of currents flowing through all live conductors (sum over phase currents) and neutral of a circuit at a point of the electrical installation.
neut (WYE) Value of phase neutral. For further details see phsA (WYE).
neut (ACT, ACD) Start event with earth current.
numPts Number of points used to define a curve.
operTm (control classes) If the service TimeActivatedOperate is performed, then this attribute shall specify the absolute time when the command shall be executed.
operTm (ACT) Operation Time. Is used for point on wave switching.
origin Contains information related to the originator of the last change of the controllable value of the data.
phsA (WYE)
Value of phase A. In the WYE class, values for phsA, phsB, phsC neut, net and res have been simultaneously acquired or determined. It shall be assumed that any jitter between the acquisition times dedicated for phsA, phsB, phsC neut, net and res is neglectable. The jitter for simultaneity shall be as indicated in the time quality field.
phsA (ACT, ACD) Trip or start event of phase A.
phsAB
Value of phase A to phase B measurement. In the DEL class, values for phsAB, phsBC and phsCA have been simultaneously acquired or determined. It shall be assumed that any jitter between the acquisition times dedicated for phsAB, phsBC and phsCA is neglectable. The jitter for simultaneity shall be as indicated in the time quality field.
phsABHar This array shall contain the harmonic and subharmonics or interharmonic values related to phase A to phase B. For further details see Har.
phsB (WYE) Value of phase B. For further details see phsA (WYE).
phsB (ACT, ACD) Trip or start event of phase B.
phsBC Value of phase B to phase C measurement. For further details see phsAB.
phsC (WYE) Value of phase C. For further details see phsA (WYE).
phsC (ACT, ACD) Trip or start event of phase C.
phsCA Value of phase C to phase A measurement. For further details see phsAB.
pulseConfig Used to configure the output pulse generated with the command if applicable.
pulsQty Magnitude of the counted value per count. actVal/frVal and pulsQty are used to calculate the value: value = actVal ´ pulsQty value = frVal ´ pulsQty
q
Quality of the attribute(s) representing the value of the data. For the different CDCs q applies to the following data attributes:
range
Range in which the current value of instMag or instCVal.mag is. It may be used to issue an event if the current value changes and transitions to another range. Range shall be used in the context with configuration attributes like hhLim, hLim, lLim, llLim, min and max as shown below. NOTE 9 The use of algorithms to filter events based on transition from one range to another is a local issue. NOTE 10 This value with the trigger option “data-change” as described in 61850-7-2 may be used to report an event to the client.
rangeC Configuration parameters as used in the context with the range attribute.
resResidual current. Residual current is the algebraic sum of the instantaneous values of currents flowing through all live conductors (i.e. sum over phase currents) of a circuit at a point of the electrical installation.
sboClass
Specifies the SBO-class according to the control model of IEC 61850-7-2 that corresponds to the behaviour of the data. The following values are defined:
sboTimeout Specifies the timeout according to the control model of IEC 61850-7-2 that corresponds to the behaviour of the data. The value shall be in ms.
serNum Serial number.
setCharact
This attribute shall describe the curve characteristic. The values are defined below. Each curve is of the form x = f(y). There are three options to describe f(y): characteristic = 1 … 16: As a formula based on up to 6 parameters A, B, C, D, E and F. The formula is standardised by ANSI or IEC. ANSI and IEC also specify the values for A, B, C, D, E and F in that case, the corresponding attributes (setParA, ..., set ParF) are read-only. characteristic = 17 … 32: As a definable formula based on up to 6 parameters A, B, C, D, E and F. In that case it may be possible, that the parameters may be modified. The specification of the formula is a local issue. The actual shape of the curve may be read out using a dedicated data of the CDC CSD. characteristic = 33 … 48: As a definable curve specified as an array of n (x,y) pairs. The specification of the array is a local issue. The actual shape of the curve may be read out using a dedicated data of the CDC CSD.
setParA Attribute used to set the parameter A of the setting curve (see detailed description under setCharact).
setParB Attribute used to set the parameter B of the setting curve (see detailed description under setCharact).
setParC Attribute used to set the parameter C of the setting curve (see detailed description under setCharact).
setParD Attribute used to set the parameter D of the setting curve (see detailed description under setCharact).
setParE Attribute used to set the parameter E of the setting curve (see detailed description under setCharact).
setParF Attribute used to set the parameter F of the setting curve (see detailed description under setCharact).
setMag The value of an analogue setting or set point.
setVal The value of a status setting.
smpRate (HMV, HWYE, HDEL)
Determines according to the sampling theorem the highest possible harmonic or interharmonic detectable. The minimum is 2 ´ frequency. The value shall represent the number of samples per nominal period. In the case of a d.c. system, the value shall represent the number of samples per s.
smpRate (MV, CMV, WYE, DEL)Sampling rate that has been used to determine the analogue values. The value shall represent the number of samples per nominal period. In the case of a d.c. system, the value shall represent the number of samples per s.
stepSize Defines the step between individual values that ctlVal (CDC INC, BSC, ISC), setVal (CDC ING) or setMag (CDC APC, ASG) will accept.
strTmStarting time of the freeze process. If the current time is later than the start time, the first freeze shall occur at the next freeze interval (frPd) expiration, computed from the start time setting.
stSeld The controllable data is in the status "selected".
stVal Status value of the data.
subEna
Used to enable substitution. If this attribute is set to true, the attribute(s) representing the value of the data instance shall always be set to the same value as the attribute(s) used to store the substitution value of the data. If this attribute is set to false, the attribute(s) representing the value of the data instance shall be based on the process value. For the different CDCs subEna applies to the following data attributes: It is the responsibility of the client application, in particular in the case of multiple attributes to be substituted, to set all relevant substitution values before enabling substitution. To prevent wrong operation in a specific mapping to one Get-Service request, the substitution is recommended to be mapped to two setDataValue services: the first one to set the substitution values and the second to set subEna to true.
subID Shows the address of the device that made the substitution. The value of null shall be used if subEna is false or if the device is not known.
subMag Value used to substitute the data attribute instMag.
subQ Value used to substitute the data attribute q.
subVal
Value used to substitute the attribute representing the value of the data instance. For the different CDCs subVal is used to substitute the following data attributes:
sVC Scaled value configuration. Shall be used to configure the scaled value representation of instMag, mag, subMag or setMag.
swRev SW-revision.
t
Timestamp of the last change in one of the attribute(s) representing the value of the data or in the q attribute. For the different CDCs t applies to the following data attributes:
units
Units of the attribute(s) representing the value of the data. For the different CDCs units applies to the following data attributes:
vendor Name of the vendor.
xD Description of the value of the x-axis of a curve.
xUnit Unit of the x-axis of a curve.
yD Description of the value of the y-axis of a curve.
yUnit Unit of the y-axis of a curve.
zeroDb
Configuration parameter used to calculate the range around zero, where the analogue value will be forced to zero. The value shall represent the percentage of difference between max and min in units of 0,001 %. For the different CDCs zeroDb applies to the following data attributes:
Use of XML for the common data attributes of IEC 61850-7-3
Version 2003-08-26 (has been automatically created from a XML file through a transformation)
These examples are intended to demonstrate that:
● a single XML document (Data_Semantic.xml) contains the complete definition of the data semantics ● the transformation (Data_Semantic_VIEW.htm) automatically creates a table from the XML
document ● the transformation automatically creates hyper links for easier navigation ● the transformation automatically creates anchors for easier navigation by other html pages
Benefit: DEFINE THE DATA SEMANTIC ONCE IN XML -- USE THEM MANY TIMES for different views!!!
Copyright of transformation (c) 2003 by Karlheinz Schwarz, SCC
Send comment to Karlheinz Schwarz or to
Tables of CDAs defined in IEC 61850-7-3
Quality
Quality Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/Cvalidity CODED ENUM good | invalid | reserved | questionable M
detailQual PACKED LIST M
overflow BOOLEAN M
outOfRange BOOLEAN M
badReference BOOLEAN M
oscillatory BOOLEAN M
failure BOOLEAN M
oldData BOOLEAN M
inconsistent BOOLEAN M
inaccurate BOOLEAN M
source CODED ENUM process | substituted DEFAULT process M
test BOOLEAN DEFAULT FALSE M
operatorBlocked BOOLEAN DEFAULT FALSE M
AnalogueValue
AnalogueValue Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/Ci INT32 integer value GC_1
f FLOAT32 floating point value GC_1
ScaledValueConfig
ScaledValueConfig Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/CscaleFactor FLOAT32 M
offset FLOAT32 M
RangeConfig
RangeConfig Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/ChhLim AnalogueValue M
hLim AnalogueValue M
lLim AnalogueValue M
llLim AnalogueValue M
min AnalogueValue M
max AnalogueValue M
ValWithTrans
ValWithTrans Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/CposVal INT8 -64 ... 63 M
transInd BOOLEAN O
PulseConfig
PulseConfig Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/CcmdQual ENUMERATED pulse | persistent M
onDur INT32U M
offDur INT32U M
numPls INT32U M
Originator
Originator Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/C
orCat ENUMERATED
not-supported | bay-control | station-control | remote-control | automatic-bay | automatic-station | automatic-remote | maintenance | process
M
orIdent OCTET STRING64 M
Unit
Unit Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/CSIUnit ENUMERATED According to Tables A.1 to A.4 in Annex A M
multiplier ENUMERATED According to Table A.5 in Annex A O
Vector
Vector Type DefinitionAttr. Name Attr. Type Value/Value Range M/O/Cmag AnalogueValue M
ang AnalogueValue O
Point
Point Type Definition
Attr. Name Attr. Type Value/Value Range M/O/CxVal FLOAT32 M
yVal FLOAT32 M
Table - DA Conditions
Abbreviation Condition
M Attribute is mandatory.
O Attribute is optional.
PICS_SUBST Attribute is mandatory, if substitution is supported (for substitution, see IEC 61850-7-2).
GC_1 At least one of the attributes shall be present for a given instance of DATA.
GC_2 (n) All or none of the data attributes belonging to the same group (n) shall be present for a given instance of DATA.
AC_LN0_M The attribute shall be present if the data NamPlt belongs to LLN0; otherwise it may be optional.
AC_LN0_EX The attribute shall be present only if the data NamPlt belongs to LLN0 (applies to ldNs in CDC LPL only).
AC_DLD_MThe attribute shall be present, if LN name space of this LN deviates from the LN name space referenced by ldNs of the logical device in which this LN is contained (applies to lnNs in CDC LPL only).
AC_DLN_MThe attribute shall be present, if data name space of this data deviates from the data name space referenced by either lnNs of the logical node in which the data is contained or ldNs of the logical device in which the data is contained (applies to dataNs in all CDCs only).
AC_DLNDA_The attribute shall be present, if CDC name space of this data deviates from the CDC name space referenced by either the dataNs of the data, the lnNs of the logical node in which the data is defined or ldNs of the logical device in which the data is contained (applies to cdcNs and cdcName in all CDCs only).
AC_SCAVThe presence of the configuration data attribute depends on the presence of i and f of the Analog Value of the data attribute to which this configuration attribute relates. For a given data object, that attribute 1) shall be present, if both i and f are present, 2) shall be optional if only i is present and 3) is not required if only f is present. NOTE•If only i is present in a device without floating point capabilities, the configuration parameter may be exchanged offline.
AC_ST The attribute is mandatory, if the controllable status class supports status information.
AC_CO_M If the controllable status class supports control, this attribute is available and a mandatory attribute.
AC_CO_O If the controllable status class supports control, this attribute is available and an optional attribute.
AC_SG_M The attribute is mandatory, if setting group is supported.
AC_SG_O The attribute is optional, if setting group is supported.
AC_NSG_M The attribute is mandatory, if setting group is not supported.
AC_NSG_O The attribute is optional, if setting group is not supported.
AC_RMS_M The attribute is mandatory when the harmonics reference type is rms.
Small subset of logical node classes (LN) of IEC 61850-7-4
The version with all LN classes defined in IEC 61850-7-4 comes with the standards IEC 61850-7-4 AND 7-3 AND 7-2 when you buy these three together
Version 2004-03-22
This web page (pdf file) is intended to provide a hypertext version of a samll excerpt of the main concepts and definitions of Parts IEC 61850-7-4
NOTE The content of this web page (pdf file) is informative only. The page does in no way replace the normative definitions contained in IEC 61850-7-4.
Copyright of transformation (c) 2004 by Karlheinz Schwarz, SCC
Send comment to Karlheinz
2004-03-22
Brief tables of six (6) LN classes defined in IEC 61850-7-4
(Tables provide just DATA Class Name and Explanation)
CLN - Common Logical Node
The compatible logical node classes defined in this document are specilisations of this Common Logical Node Class.
CLN classDATA Class Explanation
Mandatory Logical Node Information (Shall be inherited by ALL LN but LPHD)Mod Mode
Beh Behaviour
Health Health
NamPlt Name plate
Optional Logical Node InformationLoc Local operation
EEHealth External equipment health
EEName External equipment name plate
OpCntRs Operation counter resetable
OpCnt Operation counter
OpTmh Operation time
Data Sets (see IEC 61850-7-2)
LLN0- Logical node zero
This logical node shall be used to address common issues for logical devices.
LLN0 classDATA Class Explanation
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class
Loc Local operation for complete logical device
OpTmh Operation time
ControlsDiag Run Diagnostics
LEDRs LED reset
PDIR- Direction comparison
For a description of this LN, see IEC 61850-5. The operate decision is based on an agreement of the fault direction signals from all directional fault sensors (for example directional relays) surrounding the fault. The directional comparison for lines is made with PSCH.
PDIR classDATA Class Explanation
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class
OpCntRs Resetable operation counter
Status InformationStr Start (appearance of the first related fault direction)
Op Operate (decision from all sensors that the surrounded object is faulted)
SettingsRsDlTmms Reset Delay Time
MMXU- Measurement
For a description of this LN, see IEC 61850-5. This LN shall be used for calculation of currents, voltages, powers and impedances in a three-phase system. The main use is for operative applications.
MMXU classDATA Class Explanation
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class
EEHealth External equipment health (external sensor)
Measured valuesTotW Total Active Power (Total P)
TotVAr Total Reactive Power (Total Q)
TotVA Total Apparent Power (Total S)
TotPF Average Power factor (Total PF)
Hz Frequency
PPV Phase to phase voltages (VL1VL2, ...)
PhV Phase to ground voltages (VL1ER, ...)
A Phase currents (IL1, IL2, IL3)
W Phase active power (P)
VAr Phase reactive power (Q)
VA Phase apparent power (S)
PF Phase power factor
Z Phase Impedance
XCBR- Circuit breaker
This LN is used for modelling switches with short circuit breaking capability. Additional LNs for example SIMS, etc. may be required to complete the logical modelling for the breaker being represented. The closing and opening commands shall be subscribed from CSWI or CPOW if applicable. If no services with real-time capability are available between CSWI or CPOW and XCBR, the opening and closing commands are performed with a GSE-message (see IEC 61850-7-2).
XCBR classDATA Class Explanation
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class
Loc Local operation (local means without substation automation communication, hardwired direct control)
EEHealth External equipment health
EEName External equipment name plate
OpCnt Operation counter
ControlsPos Switch position
BlkOpn Block opening
BlkCls Block closing
ChaMotEna Charger motor enabled
Metered ValuesSumSwARs Sum of Switched Amperes, resetable
Status InformationCBOpCap Circuit breaker operating capability
POWCap Point On Wave switching capability
MaxOpCap Circuit breaker operating capability when fully charged
TCTR- Current transformer
For a description of this LN, see IEC 61850-5. The current is delivered as sampled values. The sampled values are transmitted as engineering values, i.e. as 'true'(corrected) primary current values. Therefore, the transformer ratio and the correction factors are of no interest for the transmitted samples, but for maintenance purposes of an external conventional (magnetic) transducer only. In addition, status information is provided and some other settings are accepted from the LN TCTR.
TCTR classDATA Class Explanation
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class
EEHealth External equipment health
EEName External equipment name plate
OpTmh Operation time
Measured valuesAmp Current (Sampled value)
SettingsARtg Rated Current
HzRtg Rated Frequency
Rat Winding ratio of an external current transformer (transducer) if applicable
Cor Current phasor magnitude correction of an external current transformer
AngCor Current phasor angle correction of an external current transformer
Full tables of six (6) LN classes defined in IEC 61850-7-4
(Tables provide all information as in IEC 61850-7-4)
CLN- Common Logical Node
The compatible logical node classes defined in this document are specilisations of this Common Logical Node Class.
CLN classDATA Class Attr. Type Explanation T M/O
Mandatory Logical Node Information (Shall be inherited by ALL LN but LPHD)Mod INC Mode M
Beh INS Behaviour M
Health INS Health M
NamPlt LPL Name plate M
Optional Logical Node InformationLoc SPS Local operation O
EEHealth INS External equipment health O
EEName DPL External equipment name plate O
OpCntRs INC Operation counter resetable O
OpCnt INS Operation counter O
OpTmh INS Operation time O
Data Sets (see IEC 61850-7-2)
LLN0- Logical node zero
This logical node shall be used to address common issues for logical devices.
LLN0 classDATA Class Attr. Type Explanation T M/O
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class M
Loc SPS Local operation for complete logical device O
OpTmh INS Operation time O
ControlsDiag SPC Run Diagnostics O
LEDRs SPC LED reset T O
PDIF- Differential
See IEC 61850-5 (LNs PLDF, PNDF, PTDF, PBDF, PMDF, and PPDF). This LN shall be used for all kind of current differential protection. Proper current samples for the dedicated application shall be subscribed.
PDIF classDATA Class Attr. Type Explanation T M/O
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class M
OpCntRs INC Resetable operation counter O
Status InformationStr ACD Start O
Op ACT Operate T M
TmASt CSD Active curve characteristic O
Measured ValuesDifAClc WYE Differential Current O
RstA WYE Restraint Current O
SettingsLinCapac ASG Line capacitance (for load currents) O
LoSet ING Low operate value, percentage of the nominal current O
HiSet ING High operate value, percentage of the nominal current O
MinOpTmms ING Minimum Operate Time O
MaxOpTmms ING Maximum Operate Time O
RstMod ING Restraint Mode O
RsDlTmms ING Reset Delay Time O
TmACrv CURVE Operating Curve Type O
PDIR- Direction comparison
For a description of this LN, see IEC 61850-5. The operate decision is based on an agreement of the fault direction signals from all directional fault sensors (for example directional relays) surrounding the fault. The directional comparison for lines is made with PSCH.
PDIR classDATA Class Attr. Type Explanation T M/O
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class M
OpCntRs INC Resetable operation counter O
Status InformationStr ACD Start (appearance of the first related fault direction) M
Op ACT Operate (decision from all sensors that the surrounded object is faulted) T M
SettingsRsDlTmms ING Reset Delay Time O
MMXU- Measurement
For a description of this LN, see IEC 61850-5. This LN shall be used for calculation of currents, voltages, powers and impedances in a three-phase system. The main use is for operative applications.
MMXU classDATA Class Attr. Type Explanation T M/O
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class M
EEHealth INS External equipment health (external sensor) O
Measured valuesTotW MV Total Active Power (Total P) O
TotVAr MV Total Reactive Power (Total Q) O
TotVA MV Total Apparent Power (Total S) O
TotPF MV Average Power factor (Total PF) O
Hz MV Frequency O
PPV DEL Phase to phase voltages (VL1VL2, ...) O
PhV WYE Phase to ground voltages (VL1ER, ...) O
A WYE Phase currents (IL1, IL2, IL3) O
W WYE Phase active power (P) O
VAr WYE Phase reactive power (Q) O
VA WYE Phase apparent power (S) O
PF WYE Phase power factor O
Z WYE Phase Impedance O
XCBR- Circuit breaker
This LN is used for modelling switches with short circuit breaking capability. Additional LNs for example SIMS, etc. may be required to complete the logical modelling for the breaker being represented. The closing and opening commands shall be subscribed from CSWI or CPOW if applicable. If no services with real-time capability are available between CSWI or CPOW and XCBR, the opening and closing commands are performed with a GSE-message (see IEC 61850-7-2).
XCBR classDATA Class Attr. Type Explanation T M/O
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class M
Loc SPS Local operation (local means without substation automation communication, hardwired direct control) M
EEHealth INS External equipment health O
EEName DPL External equipment name plate O
OpCnt INS Operation counter M
ControlsPos DPC Switch position M
BlkOpn SPC Block opening M
BlkCls SPC Block closing M
ChaMotEna SPC Charger motor enabled O
Metered ValuesSumSwARs BCR Sum of Switched Amperes, resetable O
Status InformationCBOpCap INS Circuit breaker operating capability M
POWCap INS Point On Wave switching capability O
MaxOpCap INS Circuit breaker operating capability when fully charged O
TCTR- Current transformer
For a description of this LN, see IEC 61850-5. The current is delivered as sampled values. The sampled values are transmitted as engineering values, i.e. as 'true'(corrected) primary current values. Therefore, the transformer ratio and the correction factors are of no interest for the transmitted samples, but for maintenance purposes of an external conventional (magnetic) transducer only. In addition, status information is provided and some other settings are accepted from the LN TCTR.
TCTR classDATA Class Attr. Type Explanation T M/O
Common Logical Node Information
LN shall inherit all Mandatory Data from Common Logical Node Class M
EEHealth INS External equipment health O
EEName DPL External equipment name plate O
OpTmh INS Operation time O
Measured valuesAmp SAV Current (Sampled value) M
SettingsARtg ASG Rated Current O
HzRtg ASG Rated Frequency O
Rat ASG Winding ratio of an external current transformer (transducer) if applicable O
Cor ASG Current phasor magnitude correction of an external current transformer O
AngCor ASG Current phasor angle correction of an external current transformer O
Table - Semantic of a small subset of data from IEC 61850-7-4 (2004-01-03)
Data SemanticDataName SemanticsAmp Current of a non-three-phase circuit.
AngCor Phase angle correction of a phasor (used for example for instrument transformers/transducers).
ARtg Rated current, intrinsic property of the device, which cannot be set/changed from remote.
Beh
Since the logical device controls all logical nodes that are part of the logical device, the mode of the logical device ('LDMode' = LLN0.Mod) and the mode of a specific logical node ('LNMode' = XXXX.Mod) are related. The behaviour of a logical node is therefore a combination of LLN0.Mod and XXXX.Mod and is described in the 'LNBeh' = XXXX.Beh. This Data is read-only and has the same possible values as Mod (Mode). The value is determined according the following table:
BlkCls
This Data is used to block 'close operation' (for example, for XCBR, XSWI, YPSH) from another logical node such as a protection node or from a local/remote switch. An example may be the low isolation gas density. Block closing is not reflected in operating capability. TRUE = block operation 'close circuit breaker .
BlkOpn
This Data is used to block 'open operation' (for example to XCBR, XSWI, YPSH) from another logical node such as a protection node or from a local/remote switch. An example may be the blocking of the buscoupler also for trips during busbar transfer. Block opening is not reflected in operating capability. TRUE = block operation 'open circuit breaker'.
CBOpCap
This is an enumeration representing the physical capabilities of the breaker to operate. It reflects the switching energy as well as additional blocking due to some local problems. CBOpCap is always less or equal to MaxOpCap.
More values (6...n) describe higher Operating Capabilities. A new value, i.e. a new line in the table must start alternating with 'Close' and 'Open' and must end always with 'Open'.
ChaMotEnaThis Data is used to enable the charger motor; used to prevent overload of the power supply after a busbar trip. TRUE = enable charger motor, FALSE = disable charger motor.
Cor Magnitude correction of a phasor (used for example for instrument transformers/transducers).
Diag TRUE = Diagnostic is running, FALSE = Diagnostic is not running.
EEHealthThis information reflects the state of external equipment, for example circuit breaker controlled by the logical node XCBR. The values are the same as for the Health.
EEName This information reflects the name plate of external equipment, for example the circuit breaker XCBR controlled by the logical node CSWI.
Health
This information reflects the state of the logical node related HW and SW. More detailed information related to the source of the problem may be provided by specific Data. For LLN0, this Data reflects the worst value of 'Health' of the logical nodes that are part of the logical device associated with LLN0.
Health states 1 ('green') and 3 ('red') are unambiguous by definition. The detailed meaning of Health state 2 ('yellow') is a local issue depending from the dedicated function/device.
Hz The frequency of a power system in Hz.
HzRtg Rated frequency, intrinsic property of the device, which cannot be set/changed from remote.
LEDRs Resets all light emitting diodes, true causes reset to occur.
Loc
This changeover is always done locally with a physical key or toggle switch. The physical key or toggle switch may have a set of contacts from which the position can be read. This Data indicates the switchover between local and remote operation; local = TRUE, remote = FALSE. At bay level 'local' means operation from the bay unit and 'remote' means opereation from a station unit. At process level, 'local' means operation direct on the process device, for example on a circuit breaker and 'remote' means operation from a bay unit. If in a Logical Device the Loc of LLN0 is in contradiction to the Loc of any contained LN, 'local' is always dominant.
MaxOpCapThis Data shall provide the information of the operation capability available when the switch mechanism is fully charged. The Maximum Operating Capability gives the information about the maximum of CBOpCap.
Mod
NamPlt This is the name plate of the logical node.
Op Operate (Common Data Classes ACT) indicates the trip decision of a protection function (LN). The trip itself is issued by PTRC.
OpCntThis Data represents a count of operations that is not resetable. In general, this type of counter is included in the following LNs: XCBR, XSWI, and YLTC. The counter shall not be reset from remote but maybe from local.
OpTmh This Data indicates the Operation time in h of a physical device since start of the operation. Details are LN specific.
PF Phase to ground power factor for Phases 1, 2, and 3, including Angle.
PhV Phase to ground voltages for Phases 1, 2, and 3, including Angle.
PosThis Data is accessed when performing a switch command or to verify the switch status or position. When this Data is also used for a hand-operated switch, the (optional) CtlVal attribute in IEC 61850-7-3 does not exist.
POWCap
Point On Wave switching capability.
PPV Phase to phase voltages.
Rat Winding ratio of an instrument transformer/transducer
RsDlTmms Time delay in ms before reset once reset conditions have been met.
Str Start (Common Data Classes ACD) indicates the detection of a fault or an unacceptable condition. Str may contain phase and directional information.
SumSwARs
Sum of switched amperes, resetable. This Data indicates the sum or integration of all switched currents since the last reset of the counter for example after maintenance of the contacts, the nozzle and other aging parts.
TotPF Average power factor for a three-phase circuit.
TotVA Total apparent power in a three-phase circuit.
TotVAr Total reactive power in a three-phase circuit.
TotW Total real power in a three phase circuit.