eem11_implementingdlms

8/6/2019 EEM11_ImplementingDLMS

http://slidepdf.com/reader/full/eem11implementingdlms 1/14

Implementing DLMS/COSEM

n mart etersGordan Štruklec

Joško Maršić



ContentsSmart Metering

DLMS/COSEM

Making the Meter Smart

Conclusion



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



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



DLMS/COSEM

(C) DLMS-UA



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



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



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



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



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



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



An uestions?

eem11_implementingdlms

Documents