IEC 62056 DLMS/COSEM

14th May 2009 Metering Asia

Bangkok, 13-14th May 2009

1

IEC 62056 DLMS/COSEM –

How to accommodate new requirements while

maintaining interoperability

Győző Kmethy - President

DLMS User Association



2

Presentation program

• DLMS/COSEM snapshot

• The smart metering landscape

• Smart metering requirements: similarities and

differences

• International standards and companion specifications

• Purchaser – vendor co-operation - examples

• Conclusion



3

DLMS/COSEM in a nutshell

3. Transporting

C0 01 00 03 01 01 01 08 00 FF 02

2. Messaging

Protocol Services to access

attributes and methods

Communication Protocol

Messages: Service_Id( Class_Id, Instance_Id, Attribute_Id/Method_Id )

Encoding: (APDU)

1. Modeling COSEM Interface Objects

Register 0 ..n Class_id=3, Version=0

Attribute(s) Data Type Min Max Def

1. logical_name (static) octet-string 2. value ( dyn .) instance specific 3. scaler -unit (static) scal _unit_type

Method(s) m/o

1. reset o

• Application data model

• COSEM objects + OBIS

• All energy types

• Communication method independent

• Messaging

• DLMS APDUs - most compact

• Future: XML?

• Transportation

• ISO / IEC / RFC / NIST based communication protocols

• Open international standard IEC / CEN

• Conformance testing

• Globally accepted in all segments

• User support by the DLMS UA

• Stable - an important asset



4

DLMS UA fact sheet

• Formed in 1997

• 136 members (May 2009)

• 5 continents - 51 countries

• from all branches of the

industry

• 105 Certificates (May 2009)

9

1 2

81 0

20

40

60

80

100

120

140

1997 1999 2001 2003 2005 2007 May

200943



5

The DLMS/COSEM standards

COSEM application layer

Connection DLMS

Messaging

...

COSEM interface object model

OBIS identification system

Data

Tariff

functions

Access

control

Comm.

setup

Class name Cardinality

Attribute(s) Data Type

1. logical_name (static) octet-string 2. ….. (..) ….. 3. …… (..) …..

Specific Method(s) (if required) m/o

1. ….. ….. 2. ….. …..

IEC

62056

-61

-62

-42

-46

-47

-53

IEC

62051-1

EN

13757

Part 1

P

R

O

T

O

C

O

L



6

Recent market developments

• IEC 62056 DLMS/COSEM selected for the APDRP project

• Companion specification being developed

• IEC 62056 DLMS/COSEM, adopted as a Korean standard,

will be the basis of a nationwide smart metering project

• DLMS UA is participant of the EU OPEN Meter project

• IEC 62056 DLMS/COSEM is a core standard in the project

• Companion specification being developed to meet

UNI/TS 11291 requirements for gas metering



7

Drivers for smart metering / AMI

Political

• energy efficiency

• energy saving

• supply security /

sustainability

• EU energy market

• EU services market

• new technology

culture

Technology

• static meters

• ICT – Information

and communication

technologies merge

Businesss

• operation of the

market

• customer choice

• efficient network

operation

• deferred capacity

investments

• cost reduction

• smart grids



8

Smart metering - open standards

• The standard is adopted and will be maintained by a not-for-profit organization (e.g.

ISO/IEC, CEN/CENELEC, ITU, …) and its ongoing development occurs on the basis of

an open decision-making procedure available to all interested parties (consensus or

majority decision etc.).

• The standard has been published and the standard specification document is available

either freely or at a nominal charge. It must be permissible to all to copy, distribute and

use it for no fee or at a nominal fee.

• Quality and level of detail – sufficient to permit the development of a variety of

competing implementations of interoperable products or services. Standardized

interfaces are not hidden, or controlled other than by the standard definition organisation

promulgating the standard.

• The intellectual property - i.e. patents possibly present - of (parts of) the standard is

made irrevocably available on a royalty-free basis.

• There are no constraints on the re-use of the standard

EU definition of Open standards (Used in the OPEN meter project)

IEC 62056 / EN 13757-1 DLMS/COSEM meets these criteria



9

Smart metering – commonalities and differences

Common key requirements

• Multi-energy

• Messages for the customer

• Load limitation

• Connect / disconnect for

load & contract management

• Data security

• Firmware upgrade

• Status / Fraud monitoring

Country specific environment

• Market rules and organization

• Proportion of E, G, H meters

• Level of consumption

• Energy prices, labour cost

• Customer density

• Supply networks

• Comm. infrastructures

• Age of meter park

• Non-payment, fraud issues

All projects are different, hence the need for companion specs



10

Int’l standards and companion specs

• Int’l standards cover all possible

needs, on what agreement is

reached

– general

– provides choices

– „toolbox”

• Conformance testing tests that

what is implemented works

correctly

• Companion specifications

– project specific

– reduces options,

– specifies project specific elements

that cannot be specified in IS’s

• Examples:

– use of identifiers

– tariff programs

– contents of load profiles

– definition of events / status bits

• Compliance testing verifies that the

required elements are present

• Partnership and co-operation

• Discipline in using the standards



11

Companion specification development

Develop use cases

Map to objects

Necessary objects

available?General interest?

Develop specific OBIS

code / interface class

Develop standard OBIS

code / interface class

Add to DLMSUA spec

Add to International

standard



12

Use case example: Apply threshold

New COSEM objects: Limiter, Disconnector >> Blue Book 9.0



13

DLMS/COSEM projects – Netherlands

• Project initiated by the government –

– 7 M residential Electricity + 6.5 M Gas meters + small C&I

• Driven by European Energy Efficiency Directive 2006/32/EC

• Rollout by Grid operators (GO)

http://dlms.com/firmenlogos/mitglieder.htm



14

Dutch smart metering and the DLMS UA

PDA, Laptop

Electricity meter

Gas meter

Central Access Server

Service Module

DC P2

P0

P1

P3 GPRS, Ethernet

P3.1 PLC

P3.2

• NTA 8130: Minimum requirements by Dutch Standards Institute

• International standardization

• DSMR: use cases, installation and performance requirements

• Companion specifications by Dutch Grid companies

• P1 local port: OBIS + IEC 62056-21

• P2 port, between meters: DLMS/COSEM - M-BUS

• P3 port, between meter and CAS: DLMS/COSEM over PLC / GPRS / Eth.

• New functions: M-Bus client, Firmware upgrade, Load limitation, Disconnect

control, Customer information, Events and Alarms handling

• Advanced data security using cryptographic methods (AES-GCM-128)

P3

http://dlms.com/firmenlogos/mitglieder.htm



15

Dutch approach to standards

• Standards are needed for interoperability

• All vendors claim interoperability, yet using different protocols and / or

implementations

• Choice for open standards is evident

• Choosing a (open) protocol is not enough; to facilitate reaching

interoperability a companion specification is required

• Choosing a vendor specific companion specification may lead to

vendor lock-out or biased tenders

• Utilities and meter vendors have to work together to attain an

interoperable solution

– Meter vendors for technical knowledge and to prevent vendor lock-out

– Utilities for functional requirements and making final decisions

• Only labelling as a standard is not enough



16

France – ERDF project

• Mandated by the regulator

• 95% of meters to be replaced by 2016: 35 M meters

• Objectives

– facilitate market opening

– improve efficiency of distribution

– improve demand management

– improve customer satisfaction

• CAPEX: € 4,000 M : € 800 M / year, during 5 years

• 30,000 meters to be installed daily

– largest cost is installation!

• Return estimated: >10 years



17

France – ERDF project

• Pilot project: 300,000 smart meters, 7,000

concentrators

• Winning consortium leader: ATOS Origin

– 3 meter suppliers: Actaris, Iskraemeco, Landis+Gyr

– 3 concentrator suppliers

• Final objective is to replace all 35 M electricity meters



18

French project methodology

• Formulate criteria for data model and protocols

• Select data model / protocol / media

– result: DLMS/COSEM over PLC (S-FSK >> OFDM)

• Issue tender for trials

– select one consortium, including

– at least 3 meter and 3 concentrator vendors, to prove

interchangeability

– specification details being worked out by consortium

• Full scale rollout



19

EDF protocol selection criteria

• Openness

• Standardization

• Stability

• Completeness

• Unicity of encoding

• Expandibility

• Compactness

• Simplicity

• Independence

• Continuation / Durability

• Abstraction

• Modelling

• Self-description

• Selective access

• Usage level /Adoption

• Promoters

• Scalability

• Manageability



20

20

INDUSTRY

• Smart Meter Manufacturers

• Telecommunication industry

• Silicon design & manufacturing

USERS

• Energy operators (retailers)

• Network operators

• Metering operators

R&D, Technology centers

• Comm. protocols, data formats

• Integrated systems

• Compliance tests

POLICY MAKERS

• Regulatory bodies

• Standardization bodies

OPEN meter Open Public Extended Network metering



21

OPEN meter – Work packages

• DLMS UA contributes to Work packages 2 - 6



22

The Italian Gas metering project

• UNI/TS 11291 series specifies general requirements for gas metering

• It also specifies two local protocols: CTE and CTE

• A companion standard is required now to DLMS/COSEM

• Specific challenges due to battery operation and GSM/GPRS communication

• The process of specifying the companion standard fosters common approach to the tasks



23

DLMS/COSEM new elements for smart metering

• Multi-metering: – M-Bus setup objects

• Contract / load management: – Limiter & Disconnector objects

• Firmware upgrade – Image transfer objects

• Customer info, Event handling – new OBIS codes

• Data security – new version of Association class, security setup

• PCL media – new setup objects, SN block transfer, compact array



24

Summary

• Interoperability in DLMS/COSEM

– well defined, open standards

– standard mechanism for extensions

– common approach to tasks via co-operation

– self-description: object list, data types, service list,

contexts

– CTT and certification

– additional application tests may be necessary



25

Many thanks for your kind attention!

IEC 62056 DLMS/COSEM

Documents

Transcript of IEC 62056 DLMS/COSEM