IEC TC 57 has just published a very interesting new draft (57/1521/CD):
IEC 61850-80-4 TS:
Communication networks and systems for power utility automation - Part 80-4:
Translation from COSEM object model (IEC 62056) to the IEC 61850 data model
The IEC 61850 is already THE international Standard series when it comes to (electric) power applications and information modeling and exchange. Metering Information is quite often exchanged with DLMS and COSEM:
This information needs to be “fed” into the IEC 61850 world. That is done by defining how the corresponding COSEM information can be wrapped with IEC 61850 Logical Nodes and Data Objects. The title says: Translated … which means the same.
Here is an example:
| IEC 61850 Data | COSEM OBIS Code | Explanation |
| TotVAh | (1-b:9.8.0.255) – (1-b:10.8.0.255) | Net apparent energy |
| TotWh | 1-b:1.8.0.255 - 1-b:2.8.0.255 (¦+A¦ - ¦-A¦) | Net real energy |
| TotVArh | 1-b:3.8.0.255 - 1-b:4.8.0.255 (¦+R¦ - ¦-R¦) | Net reactive energy |
| SupWh | 1-b:1.8.0.255 (+A) | Real energy supply (default supply direction: energy flow towards busbar and is equivalent to Energy Export[+]) |
| SupVArh | 1-b:3.8.0.255 (+R) | Reactive energy supply (default supply direction: energy flow towards busbar and is equivalent to Energy Export[+]) |
| DmdWh | 1-b:2.8.0.255 (-A) | Real energy demand (default demand direction: energy flow from busbar away and is equivalent to Energy Import[-]) |
| DmdVArh | 1-b:4.8.0.255 (-R) | Reactive energy demand (default demand direction: energy flow from busbar away and is equivalent to Energy Import[-]) |
These IEC 61850 Logical Nodes are of interest for the translation:
MMTR - Metering 3 Phase
MMTN - Metering Single Phase
MMXU - Measurement
MMXN - Non-phase-related measurement
MMDC - DC measurement
MSQI - Sequence and imbalance
MHAN - Non-phase-related harmonics or interharmonics
MHAI - Harmonics or interharmonics
MFLK - Flicker measurement
Closing date for comments: 2015-02-20
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