IEC TR 62325-101:2005

TECHNICAL IEC
REPORT TR 62325-101
First edition
2005-02
Framework for energy market communications –
Part 101:
General guidelines
Reference number
IEC/TR 62325-101:2005(E)
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
TECHNICAL IEC
REPORT TR 62325-101
First edition
2005-02
Framework for energy market communications –
Part 101:
General guidelines
 IEC 2005  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
W
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – TR 62325-101  IEC:2005(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope .8
2 Normative references .8
2.1 Generic Open-edi standards .8
2.2 Sectorial Open-edi standards.9
3 Terms, definitions and abbreviations .9
3.1 Terms and definitions .9
3.2 Abbreviations .9
4 Energy market requirements .10
4.1 Communication and data networks.10
4.2 Business areas and processes.11
4.3 Performance.14
4.4 Quality of service.15
5 Application of the Open-edi reference model .16
5.1 The Open-edi reference model.16
5.2 Market structure and business views.17
6 The Open-edi architecture for deregulated energy markets.17
6.1 Delimitation: market versus process.17
6.2 Conventions .18
6.3 Business and information model.20
6.4 Market identification schema.23
7 Security.24
8 Typical network configurations .26
8.1 Peer-to-peer.26
8.2 Portal .27
8.3 Enterprise Application Integration (EAI).28
8.4 Business Process Management Systems (BPMS).29

Annex A (informative) Security .30
Annex B (informative) IEC TR 62210 security .33

Figure 1 – Energy market communication over the Internet.11
Figure 2 – Energy supply chain .12
Figure 3 – The Open-edi reference model .16
Figure 4 – Energy market structure and views .17
Figure 5 – Example of use of XKMS within a public key infrastructure (PKI) .25
Figure 6 – PKI-profile for interfaces between PKI components (example) .26
Figure 7 – Network configurations .28
Figure 8 – IEC 61968 compliant middleware services for distribution management .29
Figure B.1 – Security aspects of energy market communications .34

TR 62325-101  IEC:2005(E) – 3 –
Table 1 – Type of data networks .11
Table 2 – Business areas, processes and market participants.13
Table 3 – Performance requirements.14
Table 4 – Reliability .15
Table 5 – Security.16
Table 6 – UMM workflow.19
Table 7 – Example workflow with drill down .19
Table 8 – UMM model deliveries .22
Table 9 – Security technologies .25
Table A.1 – Mandatory features of XML signature and XML encryption with MIME.31
Table A.2 – Mandatory features of S/MIME v3 .31
Table A.3 – Mandatory features of XML signature and encryption with MIME .32
Table B.1 – Definitions of security issues .35
Table B.2 – Recommended security objectives .35
Table B.3 – Mapping of security objectives to transport security functions.36
Table B.4 – Mapping of maximum security objectives to application security functions .36

– 4 – TR 62325-101  IEC:2005(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FRAMEWORK FOR ENERGY MARKET COMMUNICATIONS –

Part 101: General guidelines
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote interna-
tional co-operation on all questions concerning standardization in the electrical and electronic fields. To this
end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Techni-
cal Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”).
Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject
dealt with may participate in this preparatory work. International, governmental and non-governmental organiza-
tions liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Or-
ganization for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all inter-
ested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinter-
pretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence be-
tween any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equip-
ment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and ex-
penses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publica-
tions.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 62325-101, which is a technical report, has been prepared by IEC technical committee
57: Power systems management and associated information exchange.
The IEC 62325 series cancels and replaces IEC 62195 (2000) and its amendment (2002).
It constitutes a technical revision.
IEC 62195 (2000) dealt with deregulated energy market communications at an early stage. Its
amendment 1 (2002) points out important technological advancements which make it possible
to use modern internet technologies based on XML for e-business in energy markets as an
alternative to traditional EDI with EDIFACT and X12. The new IEC 62325 framework series for
energy market communications currently consisting of IEC 62325-101, IEC 62325-102,
IEC 62325-501, and IEC 62325-502 follows this direction and replaces IEC 62195 together
with its amendment.
TR 62325-101  IEC:2005(E) – 5 –
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
57/704/DTR 57/721/RVC
Full information on the voting for the approval of this technical report can be found in the re-
port on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 62325 consists of the following parts, under the general title Framework for energy mar-
ket communications:
Part 101: General guidelines
Part 102: Energy market model example
Part 201: Glossary
Part 3XX: (Titles are still to be determined)
Part 401: Abstract service model
Part 501: General guidelines for use of ebXML
Part 502: Profile of ebXML
Part 503: Abstract service mapping to ebXML
Part 601: General guidelines for use of web services
Part 602: Profile of Web Services
Part 603: Abstract service mapping to web services
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual edition of this document may be issued at a later date.

———————
Under consideration. Because the technologies have an inherent own glossary within their standard definitions,
2)
this glossary is a placeholder for a glossary for future parts indicated with including energy market specific
terms and definitions.
Under consideration. These parts for business content are mentioned for completeness only with a number
space as placeholder. They extend the original scope and require an agreed new work item proposal for further
work based on an overall strategy how to proceed.
Under consideration. These technical parts are mentioned for completeness with provisional title. They extend
the original scope and require an agreed new work item proposal for further work.

– 6 – TR 62325-101  IEC:2005(E)
INTRODUCTION
With the transition of monopoly energy supply structures to deregulated energy markets, the
function of the markets depends heavily on seamless e-business communication between
market participants. Compared with global e-business, e-business in the energy market is
only a small niche. Today, UN/EDIFACT or ANSI ASC X12 messages, or proprietary HTML
and XML solutions based on Internet technologies are being used. With the advent of new e-
business technologies such as ebXML by UN/CEFACT (United Nations / Centre for Trade and
Electronic Business) together with OASIS (Organization for the Advancement of Structured
Information Standards), and Web Services by W3C (World Wide Web Consortium) and OASIS
based on Internet technologies, an energy market specific profile of these standards can be
used for regional energy markets. These profiles allow the re-use of proven core components
and communication platforms across markets, thus saving cost and implementation time. Be-
cause some of these technologies are still under development, other technologies or con-
verged technologies are not excluded for the future.
The IEC 62325 series includes, besides general requirements and guidelines, the business
operational view with profiles of technical e-business communication architectures together
with migration scenarios. The process and information model as well the abstract service
model is not included in the first edition of the IEC 62325 series but may be added in the fu-
ture. It does not itself define standards and only references available standards.
It supports the communication aspects of all e-business applications in deregulated energy
markets with emphasis on system operators. The business operational view includes the mar-
ket communication aspects of system operator applications with interfaces to other market
participants from trading over supply to balancing planned generation and consumption,
change of supplier, market services and billing.
The ‘process’ real-time communication of energy systems is beyond the scope of the
IEC 62325 series.
The IEC 62325 series is subject to legal and security aspects of e-business and energy mar-
ket rules that may be different from country to country or region to region.
It is important to note that the IEC 62325 series specifies no “content” (market model with
processes, collaborations, transactions, messages, core components) because energy mar-
kets still vary. The specific content modelling of regional markets is subject of regional pro-
jects and/or may be candidate for future standardisation extending the IEC 62325 series. But
methods and tools of modelling are described and in part 102 non-normative examples of core
models, processes and messages, which show how the IEC 62325 series might be used.
Note that work is in progress at UN/CEFACT regarding the “content” of business information
exchange for example as Core Components (UN/CEFACT – Core Components Technical Speci-
fication), Core Component Library (CCL, accessible through an registry/repository), Catalogue
of Core Components (including industry groups), Common Business Processes, UMM Busi-
ness Library, XML message design rules (UN/CEFACT – XML Naming and Design Rules
(Draft 2004)).
The energy market specific vocabulary can be derived from Core Components or/and a
knowledge based energy market information model (for example the so called CIM market
extension of the CIM Common Information Model (IEC 61970-301)).
Whereas IEC 62325-501 and IEC 62325-502 of the current IEC 62325 series edition are re-
stricted to the use of the ebXML technology, the planned technical parts are intended to con-
vert the framework into a more open framework taking into account also other e-business
technologies besides ebXML, as Web Services with future IEC 62325-6XX. This may also in-
clude with future IEC 62325-401 an abstraction service model with mapping to the various e-
business technologies (future IEC 62325-503, and future IEC 62325-603) to hide the e-
business technology actually used from the application.

TR 62325-101  IEC:2005(E) – 7 –
It is important to note that the definition of a full and detailed energy market model is beyond
the scope of the IEC 62325 series, because energy markets are different. But what might be
included in future with the future IEC 62325-3XX is an extensible and adaptable core set of
information model definitions in UML which can be used as an vocabulary for the interface of
utilities to the market together with XML schema design rules for the mapping from UML to
XML, and market identification schemas. This would enable and support, but not restrict, par-
ties of the energy market to define complete energy market models in detail.

– 8 – TR 62325-101  IEC:2005(E)
FRAMEWORK FOR ENERGY MARKET COMMUNICATIONS –

Part 101: General guidelines
1 Scope
This part of IEC 62325 gives technology independent general guidelines applicable for e-
business in energy markets based on Internet technologies providing:
• a description of the energy market specific environment;
• a description of the energy market specify requirements for e-business;
• an example of the energy market structure;
• an introduction to the modelling methodology;
• network configuration examples;
• a general assessment of communication security.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
2.1 Generic Open-edi standards
The IEC 62325 series is based on ISO/IEC 14662 and Internet technologies, notably on XML
(Extensible Markup Language) of the W3C (Word Wide Web Consortium) with references to
existing or emerging standards or de-facto standards for global e-business.
IEC 60870-6 (all parts), Telecontrol equipment and systems – Part 6: Telecontrol protocols
compatible with ISO standards and ITU-T recommendations
IEC 61968 (all parts), Application integration at electric utilities – System interfaces for distri-
bution management
IEC 61970 (all parts), Energy management system application program interface (EMS-API)
IEC 62210, Power system control and associated communications – Data and communication
security
ISO/IEC 14662, Information technology – Open-edi reference model
ANSI ASC X12, Release 4040, December 2000
UN/EDIFACT, D.01A Directory, January 2001
UN/CEFACT Modelling Methodology (UMM), NO90 R12 or higher
UN/CEFACT Meta Model, NO90 R10 or higher

TR 62325-101  IEC:2005(E) – 9 –
UN/CEFACT XML Naming and Design Rules, draft 2004
UN/CEFACT Core Components Technical Specification
In this part of IEC 62325, RFCs (Request For Comments) from the Internet Engineering Task
Force (IETF) and recommendations from other Organisations such as the Word Wide Web
Consortium (W3C) and the Organization for the Advancement of Structured Information Stan-
dards (OASIS) are mentioned which are not included here because these documents are re-
ferred to in the references above.
2.2 Sectorial Open-edi standards
Market modelling based on this implies to some extent sectorial standards. At the moment no
references are given.
3 Terms, definitions and abbreviations
3.1 Terms and definitions
None.
3.2 Abbreviations
A2A Application-to-Application
AES Advanced Encryption Standard
B2B Business-to-Business
BDS Business Document Specification (instance)
BDSS Business Document Specification Schema
BIE Business Information Entity
BOV Business Operational View
BPMS Business Process Management System
BPSS Business Process Specification Schema (or instance)
BSI Business Service Interface
CC  Core Component (based on BIE)
CIM Common Information Model
CPA Collaboration Protocol Agreement
CPP Collaboration Protocol Profile
DSO Distribution System Operator (of power system)
DUNS Data Universal Numbering System (North America)
EAN European Article Number (Europe)
ebXML electronic business XML
EDI Electronic Data Exchange
EIA Enterprise Application Integration
EMS Energy Management Systems
ERP Enterprise Resource Planning
FOV Functional Service View
FTP File Transfer Protocol
———————
Under consideration.
– 10 – TR 62325-101  IEC:2005(E)
HTTP Hypertext Transport Protocol
ICT Information and Communication Technology
ISO Independent System Operator
IT  Information Technology
MIME Secure/Multipurpose Internet Mail Extensions
MIS Market Identification Schema
MOM Message-oriented middleware
MSH Message Service Handler
PKI Public Key Infrastructure
QoS Quality of Service
RPC Remote Procedure Call
RR  Registry / Repository
SAML Security Assertion Mark-up Language
SCADA Supervision, Control, and Data Acquisition
SMTP Simple Mail Transfer Protocol
SO  System Operator (of power system)
SOAP Simple Object Access Protocol
TLS Transport Layer Security
TSO Transmission System Operator (of power system)
UML Unified Modelling Language
UMM UN/CEFACT Modelling Methodology
VPN Virtual Private Network
WS  Web Services
WSDL Web Services Definition Language
XML eXtensible Markup Language
XKMS XML Key Management Specification.

4 Energy market requirements
4.1 Communication and data networks
Many market participants need to communicate with each other in the energy market. In the
IEC 62325 series, it is assumed that e-business in energy markets makes use of Internet,
which is public, unreliable and insecure in a reliable and secure manner (see Figure 1).

TR 62325-101  IEC:2005(E) – 11 –

Process data with
IEC 60870-6 (TASE.2),
Business data, .
System operators
Extranet
Central
ISO‘s
clearing
services
Traders
Power Internet
exchange
Suppliers
Transmission
Distribution
Services
Generation
(metering, .)
IEC  178/05
Figure 1 – Energy market communication over the Internet
Within the market, other types of networks besides the Internet also are possible by agree-
ment, as shown by Table 1.
Table 1 – Type of data networks
Network Features Remark
Internet Cheap, unreliable, insecure Public
Virtual private network (VPN) Secure logical network in the Inter- Uses the Internet in a closed user
net group for trusted partners
Extranet Private physically separated network For trusted partners

It is important to note that the relationship of market participants for communication purposes
follows more the ‘one-to-many’ then the general ‘any-to-any’ pattern. For example transmis-
sion system operators and power exchanges have a ‘one-to-many’ relationship to traders.
Clearing service providers, for example for change of suppliers, have a one-to-many relation-
ship to distribution service providers and suppliers. Energy brokers providing trading informa-
tion do not trade themselves and have a ‘one-to-many’ relationship with traders. From this
point of view, it is natural that the communication hubs at the “one-to” end of the relationship
are responsible in order to define the business communication interfaces for the correspond-
ing market participants in a harmonised and standardized fashion, based on an agreed tech-
nology. Because e-business technologies are positioned for global e-business of any busi-
ness, including discovery of a priori unknown business partners, the many options of this
technologies should be reduced to a minimal profile that satisfies the requirements.
4.2 Business areas and processes
In the energy market, energy is generated (electricity) or produced (gas), traded (wholesale)
and supplied (retail) to the customer (consumption). At every moment, generation and supply
should be in balance and the security of the energy network should be granted. Producers
and customer have non-discriminatory access to the energy network and customers can
chose their supplier in a deregulated market. The commercial use of energy networks for
transmission and distribution is transparent to the market participants regardless of the physi-
cal structure (voltage level, hierarchy, control areas involved). The market also needs ser-
vices to support the core functions such as registration of market participants and network
access, change of supplier, relocation of customers, metering and collection of metering data,
settlement of accounts, and billing.

– 12 – TR 62325-101  IEC:2005(E)
Figure 2 shows a high-level presentation of the supply chain of energy with basically three
main phases: In the trading planning phase, energy consumption is forecast and trading is
planned. In the trading operational phase, energy is traded to meet the forecast, and respec-
tive generation resources are allocated. The implementation of the physical energy path from
generation over the transmission and distribution network to consumption affords co-ordinated
planning of balanced schedules in the system operation planning phase for generation, im-
port/export and consumption. In the system operation operational phase, energy flows directly
from the producer to the customer over the transmission and distribution network. System op-
eration guarantees that in this phase, generation meets consumption in real-time (balancing)
and that the system is reliable. Many services are needed to support the core processes. In
the settlement phase, for example, the settlement service provides the means to bill con-
sumption and imbalances. Any imbalance of operation (difference between schedules and
metered generation and consumption) is in the financial responsibility of the Balance-
Responsible Parties (traders and others).

Services (registration, metering, settlement, billing)
Sell energy
Change of supplier
Generation
generation
Trading Supply
trading supply  C  cononssumumptioptn ion
pproduroductiocntion
Net access Net access
Power flow
Transmission, distribution
System operation (scheduling and balancing)
IEC  179/05
Figure 2 – Energy supply chain
Table 2 identifies the business areas, processes within the areas and the involved roles of
market participants. For an informative simplified market model which serves only for the pur-
pose of giving a specific context to e-business in energy markets refer to IEC 62325-102. The
nomenclature may change from market to market. Some business processes are identified as
energy services to indicate that these processes could be outsourced to service providers. In
addition to suppliers, sub-suppliers also exist as aggregators (aggregation of consumption),
but are not included.
It is important to note that where reference is made to ‘market participants’, this should be
understood to mean ‘market participant roles’ rather than market participants in the sense of
companies. This is because a market participant can take on many roles. For example, a dis-
tribution utility can take on the roles of distribution system operator (network control), distribu-
tion service provider (network planning, construction and maintenance), supplier (buying and
selling energy to end consumers), energy service provider (registration, change of supplier,
metering, settlement of accounts, billing), within the constraints of a particular regulatory sys-
tem.
TR 62325-101  IEC:2005(E) – 13 –
Table 2 – Business areas, processes and market participants
Business area Business process Roles of involved market participants
Generation
Generation planning Generator
Trading
Bilateral trading Trader, central matching service provider (confirmation)
Brokering Trader, Broker
Bidding at power exchange Trader, Power exchange
Financial clearing Trader, clearing responsible parties
Auxiliary services trading Trader, transmission system operator
Cross boarder auctioning Trader, transmission system operator
Supply
Selling energy to end consumers Supplier
Transmission
Registration, network access and Transmission system operator, transmission service pro-
transmission vider, generators, customers
Distribution
Registration, network access and Distribution system operator, distribution service pro-
distribution vider, generators, customers
System operation
Scheduling consumption and Transmission system operator, balance responsible par-
generation ties (trader, supplier, generator)
Scheduling import/export Transmission system operator, balance responsible par-
ties (trader)
Operation (Balancing) Transmission System operator, generators (auxiliary ser-
vices)
Energy services Service provider, etc. many market participants
Metering (meter readings) Customer, distribution service provider, metering service
provider
Access to collected metering data Supplier, trader, metering service provider
Settlement of accounts of con- Service provider, supplier, generator, etc.
sumption and generation
Settlement of accounts of imbal- Transmission system operator, balance responsible par-
ance ties (trader, supplier, generators), service provider
Billing Service provider, etc.
Change of supplier Customer, supplier, distribution service provider
Relocation of customer Customer, supplier, distribution service provider
Exchange of market metadata Customer, supplier, distribution service provider

– 14 – TR 62325-101  IEC:2005(E)
4.3 Performance
Table 3 shows generic performance requirements in terms of duration of a message interac-
tion between market participants for a business process to end within a certain period. The
duration is the maximum end-to-end time for the transport of the messages without applica-
tion processing time. These requirements may change from market to market. They should be
defined in a project.
Table 3 – Performance requirements
Business area Business process Process period Maximum duration of inter-
action
Generation
Generation planning Next hour, day, month < 1 min
Trading
Bilateral trading Next day, next month, < 5 s
next year, next years
Brokering Next day, next month, < 5 s
next year, next years
Bidding at power exchange Intra day, next day < 5 s
Financial Clearing Intra day, next day, next < 1 h
week, next month, next
year, next years
Supply
Selling energy to end consumers Month < 1 day
Transmission
Network access, contract Month < 1 day
Distribution
Network access, contract Month < 1 day
System operation
Planning (scheduling) Next hour, next day < 1 min
Auxiliary services Next day < 2 min to 4 h
Energy services
Metering (readings) Week, month < 1 day
Access to collected metering data Day, week, month < 1 h
Settlement of accounts of con- Month < 1 day
sumption and generation
Settlement of accounts of imbal- Month < 1 day
ance
Billing Month < 1 day
Clearing of change of supplier Month (week, day) < 1 day
Change of supplier Week, month < 1 day
Relocation of customer Month < 1 day
Exchange of market metadata Week, month < 1 day

For B2B peer-to-peer network configurations over the Internet (HTTP) these requirements
should not be a problem with message transfer times typically less than 5 s. In portal network
configurations (hubs with push-pull) with intermediate message storage, the duration of mes-
sage transport depends on requesting stored messages. The same is true for dial-up lines
(SMTP). In portal network configurations with routing, the duration of message transport de-
pends on the throughput at peak load.

TR 62325-101  IEC:2005(E) – 15 –
4.4 Quality of service
4.4.1 General
Quality of service (QoS) deals with reliable and secure messaging transfer and is dealt with in
the following paragraphs. The service parameters should be configurable so that within an
energy market, a specific profile can be used. This profile depends on the used network and
business processes.
4.4.2 Reliability
Messages transmitted over a network can get lost, corrupted, duplicated, be out of sequence,
not be accepted by the recipient or simply not reach its intended destination. Furthermore
systems can fail and messaging services can become interrupted by network failures. Without
counter measures and with best efforts, the network will provide only an unreliable service.
Table 4 shows the reliability risks and counter measures. Counter measures also include per-
sistent storage of messages to protect against system failure or interruption and messaging
error notification to the application.
Table 4 – Reliability
Reliability risk Counter measures
Lost Acknowledgement with re-transmission after time out
Corrupted Acknowledgement with re-transmission after time out
Duplicated Filtering
Out of sequence Sequence control with sequence number
Not accepted Unsigned or signed delivery receipt

A reliable messaging service should provide measures to guarantee a reliable service, espe-
cially using the unreliable Internet. A “reliable messaging service” should provide a reliable
service taking into account the risks stated in Table 4. This service is a mandatory require-
ment over the Internet for certain business processes.
4.4.3 Security
In common with all other e-businesses, the energy market depends on security measures, es-
pecially when using the insecure Internet and operating within a legal framework. Since
e-business in energy markets form only a small niche of global e-business, all enterprises
have to deal with the fact that there are no specific requirements for energy markets. Table 5
shows the possible security risks and counter measures.
The Annex B covers the appropriate areas of security that impact the implementation and use
of e-business technologies in the context of the IEC 62210 with regard to computerized su-
pervision, control, metering, and protection systems in electrically utilities.

– 16 – TR 62325-101  IEC:2005(E)
Table 5 – Security
Security risk Counter measures
Non-repudiation of origin and receipt Audit trails, logging of messages
- of origin Digital signed messages
- of receipt Digital signed acknowledgements and receipts
Loss of integrity of messages Message digest and digital signatures of messages
Loss of confidentiality Encryption of messages
Wrong identity Authentication of origin with digital signatures and credentials
Unauthorized access and fraud Authorisation with access control lists based on digital signatures
Forged date and time Authentication of date and time within a message
A secure messaging service should provide a secure service taken into account the risks
stated in Table 5.
The need and level of security should be a part of a model of a business process, and is be-
yond the scope of this part of IEC 62325. For these, security profiles (see relevant parts of the
IEC 62325 series) should be used.
5 Application of the Open-edi reference model
5.1 The Open-edi reference model
The e-business architecture and the IEC 62325 series follow the Open-edi reference model
ISO/IEC 14662 (see Figure 3). Fundamental to the model is the division of the business
transactions into the Business Operational View (BOV) and the Functional Service (FSV) with
mapping of services between to ensure independence of the communication technology used.

BB
Governed by UN/CEFACT
UU
Unified Modeling Methodology (UMM), N090
SS
II
Business operational view
NN
Comply with
BOBOV RELV RELAATTEEDD
EE
BuBusisinneessss a assppeecctsts
STSTAANDANDARRDDSS
SS
of of
Covered by
S S
bbususiinessness t transransaaccttiiononss
TT
Interrelated
RR
AA
NN Viewed
SS as
FuFunctinctioonnal Serviceal service vi Vieeww
Comply with
FFSV RELSV RELAATTEEDD
AA
STSTAANDANDARRDDSS
CC
Information technology
Information technology
TT
aspects of
aspects of
Covered by
II
business transactions
business transactions
OO
NN
SS
(ISO/IEC 14662 Information technolog- y – Open-edi reference model)
IEC  180/05
Figure 3 – The Open-edi reference model

TR 62325-101  IEC:2005(E) – 17 –
5.2 Market structure and business views
The IEC 62325 series assumes that the energy market consists of business areas, which use
the same e-business communication infrastructure. It is further assumed that besides specific
market models within each business area (specific BOV), the overlapping and interaction of
business areas also leads to common market models (common BOV). Figure 4 shows the
market structure and views.
Re-usable business models, messages and IT infrastructure cross markets and business areas
European energy market
Specific
BOV
Business Operational View
Common
ICT
business models, messages and BOV
core components
Functional Service View
Common
IT infrastructure
FSV
ICT = Information and Communication Technology
IEC  181/05
Figure 4 – Energy market structure and views
6 The Open-edi architecture for deregulated energy markets
6.1 Delimitation: market versus process
In deregulated energy markets, market participants decide ‘who’ produces ‘how’ much energy
‘where’ and ‘when’. They also decide about the choices in the whole supply chain where cus-
tomers have the choice of supplier (retail), suppliers have the choice of traders (wholesale),
and traders have the choice of generators. Only the energy network is a natural monopoly.
The market deals with the economic choice and delivery of products and energy related ser-
vices within a time frame down to hours or less. It depends on reliable and secure system op-
eration of the technical process.
The technical process (generation, transmission and distribution) supports the market trans-
actions and guarantees reliable and secure system operation including energy exchanges and
real-time balancing of generation and load within a time frame down to seconds (load-
frequency control, telecontrol) and milliseconds (local protection).
The business-oriented market and the technical process are the two sides of the commer-
cial/technical system with close dependencies and relationships. For example, planned
schedules of market participants for generation and load have indirect impact on the process.
On the other hand, the market for example has to adapt to notified congestion and outages in
the process. So a part of e-business in energy markets deals with the interface between the
market and the process. This interface is part of the market.
In the context of market communications, a series of standards on the process side deal with
control centres and are to some degree, closely interrelated with market transactions:
Trading
Supply
Transmission
Distribution
Services
– 18 – TR 62325-101  IEC:2005(E)
The IEC 60870-6 series (TASE.2) deals with inter control centre communication of process
data including energy exchange schedules. The latter is also possible using the e-business
technologies described in the IEC 62325 series over a process Extranet. In this case the
same communication technology is used for the interface between the market and the process
and between control centres.
The IEC 61970 series facilitate integration of applications within a control centre, including the
interactions with external operations in distribution as well as other external sources/sinks of
information needed for real-time operations. The IEC 61968 series develops interfaces for dis-
tributed management systems for information exchange with other IT systems. Both series of
standards deal with the Integration Bus (IB) and the Common Information Model (CIM). The
CIM model may also include parts that are influenced by the market, for example scheduling
for energy exchange, reservation, and financial.
6.2 Conventions
6.2.1 Modelling methodology
In common with other markets, the energy market has specific legal, commercial and techni-
cal requirements. Although
...