eem11_implementingdlms
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8/6/2019 EEM11_ImplementingDLMS
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Implementing DLMS/COSEM
n mart etersGordan Štruklec
Joško Maršić
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ContentsSmart Metering
DLMS/COSEM
Making the Meter Smart
Conclusion
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Smart MeteringSmart Grids – new visions of the future electricsystem
Increasing demand for electricityLower carbon generationOptimization of operation and usage
Fully automated powerdelivery network
Able to monitor and control electricityflows to every customer and nodeTwo-way flow of electricity and real-time information between powerplants and appliances
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DLMS/COSEMDLMS – Device Language Message Specification
Generalized concept for abstract modeling of communication entitiesDefines services to access meter data object elementsDefines profiles to access communication media (PSTN/GSM, Internet,Euridis, M-bus, PLC)
COSEM – COmpanion Specification for EnergyMetering
Object model for metering applications
Every parameter in a meter is represented by a COSEM object
3 step approach
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DLMS/COSEM
(C) DLMS-UA
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DLMS/COSEM
(C) DLMS-UA
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Making the Meter SmartThe need to solve current AMR issues
Equipment compatibility and interoperabilityVarious communication protocols, but no unique PC softwareDiferent data models – no standardized data interpretation
Compatible with ‘old’ HW and SWDLMS/COSEM support added on the top of the current protocol stack
Smart Meter basisImported and exported active and reactive energy measurement in upto 4 tariffsMaximum active and reactive demand in all tariffs
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Making the Meter SmartSmat Meter basis (2)
Energy and demand of the last 18 billing periodsRemote or local billing period reset4 months load profileLog book of 64 last events
Current, voltage and phase measurementPower quality monitoring and logging: power failures, undervoltagesand overvoltagesTamper detection
Real-time clock, date and calendarProgrammable time switching tableIntegrated ripple control receiverTariff-swith inputs
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Making the Meter SmartSmat Meter basis (3)
Programmable LCD sequenceLoad limitation and switching off Autonomous battery operation of 10 yearsSelf testing
Number of readouts and configuration changes loggingTwo-way communication interfaces: IEC62056-21, RS485, IEC62056-31
Changes
FLASH and RAM exhaustedRemoval of less needed features (IEC62056-31 and/or RCR)Adding DLMS/COSEM support through IEC62056-31 (‘Flag’) or directlythrough RS485
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Making the Meter SmartNew data model
All values and functionalities mapped to new objects’ attributesMainly used classes: data, register, extended register and profilegenericLogical Name referencing: objects represented by logical names (OBIS
3-layer HDLC communicationprotocol, frame type 31 and 4-byte addressing –addresses can be changed locally
(C) DLMS-UA
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Making the Meter SmartTesting and verification
CTTNo commercial software
Still current problems ress ng o ne wor e me ers
Presentation of data values
Further improvements
New ‘smart’ classesLimiterImage transferMultimeter
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ConclusionSmart Meters are the basis for AMI
DLMS/COSEM proposes the solution to compatibilityand interoperability issues
DLMS/COSEM features, too broad data presentationpossibilities -> the need for better definition
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An uestions?
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