LN: Mechanical tension / stress Name: TTNS
Logical node TTNS shall be used to represent a measurement of the mechanical tension in an object.
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TTNS class |
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Data object name |
Common data class |
Explanation |
T |
Ml o/c |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Descriptions |
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EEName |
DPL |
External equipment name plate |
|
о |
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Status information |
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EEHealth |
ENS |
External equipment health |
|
о |
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Measured and metered values |
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TnsSv |
SAV |
Mechanical stress [N] |
|
с |
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Settings |
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SmpRte |
ING |
Sampling rate setting |
|
О |
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Condition C: The data object is mandatory if the data object is transmitted over a communication link and therefore it is visible. |
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LN: Vibration sensor Name: TVBR
Logical node TVBR shall be used to represent a vibration level value. In case the vibration can be defined as a frequency, the TFRQ logical node could be used instead.
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TVBR class |
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Data object name |
Common data class |
Explanation |
T |
Ml O/C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Descriptions |
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EEName |
DPL |
External equipment name plate |
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0 |
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Status information |
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EEHealth |
ENS |
External equipment health |
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0 |
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Measured and metered values |
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VbrSv |
SAV |
Vibration [mm/s2] |
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c |
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Settings |
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SmpRte |
ING |
Sampling rate setting |
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0 |
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Condition C: The data object is mandatory if the data object is transmitted over a communication link and therefore it is visible. |
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LN: Voltage transformer Name: TVTR
For a description of this LN, see IEC 61850-5. The voltage is delivered as sampled values. The sampled values are transmitted as engineering values, that is as “true” (corrected) primary voltage 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 TVTR.
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TVTR class |
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Data object name |
Common data class |
Explanation |
T |
MIDI C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Descriptions |
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EEName |
DPL |
External equipment name plate |
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0 |
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Status information |
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EEHealth |
ENS |
External equipment health |
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о |
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OpTmh |
INS |
Operation time |
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0 |
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FuFail |
SPS |
TVTR fuse failure |
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0 |
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Measured and metered values |
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VolSv |
SAV |
Voltage (sampled value) |
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C1 |
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Settings |
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VRtg |
ASG |
Rated voltage ' |
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0 |
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HzRtg |
ASG |
Rated frequency |
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о |
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Rat |
ASG |
Winding ratio of external voltage transformer (transducer) if applicable |
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0 |
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Cor |
ASG |
Voltage phasor magnitude correction of external voltage transformer |
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о |
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AngCor |
ASG |
Voltage phasor angle correction of external voltage transformer |
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C2 |
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CorCrv |
CSG |
Curve phasor magnitude and angle correction |
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C2 |
Condition C1: The data object is mandatory if the data object is transmitted over a communication link and therefore it is visible.
Condition C2: If there are two or more correction pairs necessary, CorCrv should be used.
LN: Water acidity Name: TWPH
Logical node TWPH shall be used to represent a water pH level value.
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TWPH class |
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Data object name |
Common data class |
Explanation |
T |
Ml O/C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Descriptions |
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EEName |
DPL |
External equipment name plate |
|
о |
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Status information |
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EEHealth |
ENS |
External equipment health |
|
о |
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Measured and metered values ‘ |
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H2OPhSv |
SAV |
Water pH level (0-14) |
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с |
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Settings |
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SmpRte |
ING |
Sampling rate setting |
|
о |
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Condition C: The data object is mandatory if the data object is transmitted over a communication link and therefore it is visible. |
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Logical nodes for switchgear LN Group: X
Modelling remarks
The logical nodes of this group provide data which are needed to represent the related switchgear equipment in the automation system. There are only two logical nodes (XCBR, XSWI) since all not current breaking switches are modelled by XSWI. Each logical node has companion logical nodes in group S (like SCBR, SSWI) providing the detailed supervision information if needed.
LN: Circuit breaker Name: XCBR
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 “time activated control" service is available between CSWI or CPOW and XCBR, the opening and closing commands shall be performed with a GSE-message (see IEC 61850-7-2).
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XCBR class |
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Data object name |
Common data class |
Explanation |
T |
MIDI C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Descriptions |
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EEName |
DPL |
External equipment name plate |
|
О |
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Status information |
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EEHealth |
ENS |
External equipment health |
|
О |
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LocKey |
SPS |
Local or remote key (local means without substation automation communication, hardwired direct control) |
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О |
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Loc |
SPS |
Local control behaviour |
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M |
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OpCnt |
INS |
Operation counter |
|
м |
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XCBR class |
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Data object name |
Common data class |
Explanation |
T |
N1/0/ C |
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CBOpCap |
ENS |
Circuit breaker operating capability |
|
О |
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POWCap |
ENS |
Point on wave switching capability |
|
0 |
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MaxOpCap |
INS |
Circuit breaker operating capability when fully charged |
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0 |
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Dsc |
SPS |
Discrepancy |
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0 |
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Measured and metered values |
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SumSwARs |
BCR |
Sum of switched amperes, resettable |
|
0 |
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Controls |
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LocSta |
SPC |
Switching authority at station level |
|
о |
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Pos |
DPC |
Switch position |
|
м |
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BlkOpn |
SPC |
Block opening |
|
м |
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BlkCls |
SPC |
Block closing |
|
м |
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ChaMotEna |
SPC |
Charger motor enabled |
|
О |
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Settings |
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CBTmms |
ING |
Closing time of breaker |
|
о |
LN: Circuit switch Name: XSWI
This LN is used for modelling switches without short circuit breaking capability, for example disconnectors, air break switches, earthing switches, etc. Additional LNs, SIMS, etc. may be required to complete the logical model for the switch being represented. The closing and opening commands shall be subscribed from CSWI. If no "time activated control” service is available between CSWI or CPOW and XSWI, the opening and closing commands shall be performed with a GSE-message (see IEC 61850-7-2).
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XSWI class |
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Data object name |
Common data class |
Explanation |
T |
N1/0/ C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Descriptions |
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EEName |
DPL |
External equipment name plate |
|
o |
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Status information |
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EEHealth |
ENS |
External equipment health |
|
О |
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LocKey |
SPS |
Local-remote key |
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0 |
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Loc |
SPS |
Local control behaviour |
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M |
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OpCnt |
INS |
Operation counter |
|
M |
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SwTyp |
ENS |
Switch type |
|
M |
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SwOpCap |
ENS |
Switch operating capability |
|
о |
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MaxOpCap |
INS |
Switch operating capability when fully charged. Obsolete. Kept for backwards compatibility with Ed.1 |
|
о |
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Dsc |
SPS |
Discrepancy |
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0 |
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Controls |
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LocSta |
SPC |
Switching authority at station level |
|
0 |
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Pos |
DPC |
Switch position |
|
м |
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BlkOpn |
SPC |
Block opening |
|
м |
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BlkCls |
SPC |
Block closing |
|
м |
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ChaMotEna |
SPC |
Charger motor enabled |
|
о |
Logical nodes for power transformers LN Group: Y
Modelling remarks
The logical nodes of this group provide data which are needed to represent the related switchgear equipment in the automation system. This data may be complemented by supervision logical nodes of group S if needed.
LN: Earth fault neutralizer (Petersen coil) Name: YEFN
For a description of this LN, see IEC 61850-5. This LN shall be used for suppression coils as tap coils and plunge core coils.
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YEFN class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- )nstance-ID according to IEC 61850-7-2, Clause 22. |
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|
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Data objects |
||||
|
Descriptions |
||||
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EEName |
DPL |External equipment name plate |
Jo |
||
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Status Information |
||||
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EEHealth |
ENS |
External equipment health |
|
0 |
|
LocKey |
SPS |
Local-remote key |
|
о |
|
Loc |
SPS |
Local control behaviour |
|
M |
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OpTmh |
INS |
Operation time |
|
0 |
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EndPosR |
SPS |
End position raise reached |
|
о |
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EndPosL |
SPS |
End position lower reached |
|
о |
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PotAlm |
SPS |
Potentiometer alarm |
|
О |
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MotAlm |
SPS |
Motor drive alarm |
|
О |
|
Measured and metered values |
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ColPosA |
MV |
Coil position derived from the air gap |
|
С1 |
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ColAEFN |
CMV |
Real measured coil current |
|
О |
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NeutVol |
CMV |
Neutral to ground voltage |
|
О |
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Controls |
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LocSta |
SPC |
Switching authority at station level |
|
о |
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ColTapPos |
ISC |
Coil tap position |
|
С2 |
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ColPos |
APC |
Plunge core position |
|
С2 |
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ColChg |
ВАС |
Change coil position (higher, lower, stop) |
|
С2 |
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Condition C1: Is only used if not fixed coil should be modelled. Condition C2: At least one of the data objects should be mandatory. |
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