IEC 62325-503:2018

Framework for energy market communications - Part 503: Market data exchanges guidelines for the IEC 62325-351 profile

IEC 62325-503:2018 specifies a standard for a communication platform which every Transmission System Operator (TSO) in Europe can use to exchange reliably and securely documents for the energy market. Consequently a European market participant (TSO, regional supervision centre, distribution utility, power exchange, etc.) could benefit from a single, common, harmonised and secure platform for message exchange with other participants; thus, reducing the cost of building different information technology (IT) platforms to interface with all the parties involved. This edition cancels and replaces IEC TS 62325-503 published in 2014.
This edition includes the following significant technical changes with respect to the previous edition:
a) Use of ISO/IEC 19464:2014, Advanced Message Queuing Protocol (AMQP) v1.0 specification;
b) Splitting of the node described in the IEC TS 62325-503:2014 into a broker that implements the messaging function and a directory;
c) Increase of operability and resilience of the communication system with the ability for an endpoint to send and receive messages through several brokers;
d) Benefits of standardisation, performance and scalability of the AMQP protocol for transferring messages.

Cadre pour les communications pour le marché de l'énergie - Partie 503: Lignes directrices concernant les échanges de données du marché pour le profil défini dans l’IEC 62325-351

IEC 62325-503:2018 spécifie une norme relative à une plate-forme de communication que chaque gestionnaire de réseau de transport (GRT) en Europe peut utiliser pour échanger en toute fiabilité et sécurité des documents destinés au marché de l’énergie. Par conséquent, un participant aux marchés européens (GRT, centre régional de surveillance, régie de distribution, bourse d’électricité, etc.) peut tirer profit d’une plate-forme commune unique harmonisée et sûre d’échange des messages avec les autres participants, réduisant ainsi le coût de mise en place de différentes plates-formes de technologies de l’information (TI) assurant l’interface avec toutes les parties concernées. Cette édition annule et remplace l'IEC TS 62325-503 parue en 2014.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) Utilisation de l’ISO/IEC 19464:2014, Advanced Message Queuing Protocol (AMQP) v1.0 specification (disponible en anglais seulement);
b) Répartition du nœud décrit dans l’IEC TS 62325-503:2014 dans un courtier qui met en œuvre la fonction de transmission de messages et un annuaire;
c) Renforcement de l’opérabilité et de la résilience du système de communication avec capacité pour un point d’extrémité d’envoyer et de recevoir des messages par l’intermédiaire de plusieurs courtiers;
d) Avantage issu de la normalisation, des performances et de l’évolutivité du protocole AMQP de transfert de messages.

General Information

• Status: Published
• Publication Date: 25-Jul-2018
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: TC 57 - Power systems management and associated information exchange
• Drafting Committee: WG 16 - TC 57/WG 16
• Current Stage: PPUB - Publication issued
• Start Date: 26-Jul-2018
• Completion Date: 26-Oct-2025

Relations

• Revises: IEC TS 62325-503:2014 - Framework for energy market communications - Part 503: Market data exchanges guidelines for the IEC 62325-351 profile
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62325-503 ®
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Framework for energy market communications –
Part 503: Market data exchanges guidelines for the IEC 62325-351 profile

Cadre pour les communications pour le marché de l'énergie –
Partie 503: Lignes directrices concernant les échanges de données du marché
pour le profil défini dans l’IEC 62325-351

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IEC 62325-503 ®
Edition 1.0 2018-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Framework for energy market communications –

Part 503: Market data exchanges guidelines for the IEC 62325-351 profile

Cadre pour les communications pour le marché de l'énergie –

Partie 503: Lignes directrices concernant les échanges de données du marché

pour le profil défini dans l’IEC 62325-351

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-5916-0

– 2 – IEC 62325-503:2018  IEC 2018
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 11
4 High level concepts . 12
4.1 What is the purpose of MADES? . 12
4.2 Overview. 13
4.3 Transparent and reliable message delivery . 14
4.4 Components of a MADES system . 15
4.4.1 Endpoint, broker and component-directory . 15
4.4.2 Delivery routes and acknowledgements . 16
4.4.3 Sharing configuration data of the system . 17
4.4.4 Interfaces exposed by the components . 19
4.4.5 Architecture examples of MADES systems . 21
4.5 Security and message integrity . 24
4.5.1 Security goals and security solution . 24
4.5.2 Transport-layer security . 25
4.5.3 Message-level security: signing and encryption . 26
4.5.4 Non-repudiation . 27
5 Delivering the messages. 29
5.1 Unique identification of components and messages . 29
5.2 Message-type of a message . 29
5.3 Message route towards a recipient endpoint: message-paths . 29
5.4 Restriction on the routes by a broker . 31
5.5 Message acceptance by a sender endpoint . 31
5.6 Tracking the delivery of a message . 31
5.6.1 Message-status of a message . 31
5.6.2 Delivery events and acknowledgements . 32
5.7 Message expiration . 34
5.8 Reliable transfer of a message . 35
5.8.1 Rationale . 35
5.8.2 Transfer between sender application and sender endpoint . 36
5.8.3 Transfer between components using the AMQP protocol . 37
5.8.4 Transfer between recipient endpoint and recipient application . 37
5.9 Storing internal messages in components . 38
5.10 Message priority . 38
5.11 Message delivery order . 38
5.12 Testing a route between two endpoints: tracing-messages . 38
6 Transferring messages using the AMQP protocol. 39
6.1 Main principles of the AMQP specification . 39
6.1.1 Introduction . 39
6.1.2 Connection Open . 40
6.1.3 Session begin . 40
6.1.4 Link attachment . 41
6.1.5 Message transfer . 41

6.1.6 Link recovery and resends . 41
6.1.7 Error management . 41
6.1.8 Message structure . 41
6.2 AMQP high-level implementation: the client/broker model . 42
6.3 AMQP implementation in MADES components . 43
6.4 Management of AMQP connections and attachments by an endpoint . 45
6.5 Internal message format . 46
6.5.1 Definitions, design and security checks . 46
6.5.2 AMQP format for transferring internal messages . 46
6.5.3 Encryption . 47
6.5.4 Signing . 48
6.5.5 Internal message metadata . 49
6.5.6 XML signature example . 53
7 Managing configuration data of the system . 54
7.1 Rationale . 54
7.2 Directory content and information ownership . 54
7.3 On the consistency of configuration data . 56
7.3.1 Component consistency . 56
7.3.2 System consistency . 57
7.3.3 Distributed update implementation . 57
7.3.4 Eventual consistency . 57
7.4 Connection to a component-directory . 57
7.5 REST API implementation and available resources . 58
7.6 Registration process . 59
7.7 Synchronisation process . 60
7.7.1 Validity period of replicated data: time-to-live . 60
7.7.2 Limitation of the synchronisation flow . 60
7.7.3 Configuration of the synchronisation process . 61
7.8 XML schemas of the APIs requests and responses . 61
7.8.1 Shared types . 61
7.8.2 registrations resource . 63
7.8.3 endpoints, brokers and components resources . 65
8 Managing the certificates . 66
8.1 Definitions and principles . 66
8.2 Certificates: format and unique ID . 67
8.3 Used certificates and issuers certificates authorities . 67
8.3.1 Overview . 67
8.3.2 Transport-layer security (authorise data exchanges) . 67
8.3.3 Message-level security (protect message confidentiality and
authenticate message issuer) . 68
8.4 Trusting the certificates of others components . 68
8.4.1 Authentication. 68
8.4.2 Signing and encryption . 68
8.5 Renewing the (nearly) expired certificates . 68
8.6 Revoking a component . 69
9 Managing the version of the MADES specification . 69
9.1 MADES version of this document . 69
9.2 Issue, version meaning, upgrading recommendations . 69
9.3 Changing the signature or the encryption algorithms . 70

– 4 – IEC 62325-503:2018  IEC 2018
10 Administrating and operating the components. 70
11 Interfaces for the applications . 71
11.1 Endpoint webservice interface for applications . 71
11.1.1 Overview . 71
11.1.2 SendMessage service . 72
11.1.3 ReceiveMessage service . 73
11.1.4 ConfirmReceiveMessage service . 75
11.1.5 CheckMessageStatus service . 75
11.1.6 ConnectivityTest service . 77
11.1.7 WSDL for the endpoint webservice interface . 77
11.2 File System Shared Folders (FSSF) . 84
11.2.1 Overview . 84
11.2.2 Folders and file naming convention . 84
11.2.3 Concurrent access to files . 86
11.2.4 Configuring FSSF . 86
Bibliography . 87

Figure 1 – MADES overall view . 12
Figure 2 – MADES scope in a layered architecture . 13
Figure 3 – MADES message delivery . 14
Figure 4 – MADES components, interactions and protocols . 15
Figure 5 – Possible routes for delivering a message . 16
Figure 6 – Communication protocols for delivering a message . 17
Figure 7 – Data flows between a component-directory and its registered components. 18
Figure 8 – Data flows with several component-directories . 19
Figure 9 – Component-directory services and protocols . 19
Figure 10 – MADES Interfaces, services and protocols . 20
Figure 11 – Minimal MADES system (without broker) . 21
Figure 12 – Minimal MADES system (with broker) . 21
Figure 13 – MADES system with a party in a central role . 22
Figure 14 – MADES system with several brokers . 23
Figure 15 – Using a single endpoint for several business processes . 24
Figure 16 – MADES transport security . 25
Figure 17 – Security: protected endpoint . 25
Figure 18 – Security: exposed endpoint . 26
Figure 19 – Message signing and signature verification . 26
Figure 20 – Message encryption and decryption . 27
Figure 21 – Non-repudiation . 28
Figure 22 – Message-status along the delivery . 32
Figure 23 – Tracking events while delivering a message . 33
Figure 24 – Reliable transfer . 36
Figure 25 –Transfer between sender application and sender endpoint . 36
Figure 26 – Transfer between recipient endpoint and recipient application . 37
Figure 27 – The nine AMQP frames . 40
Figure 28 – Structure of an AMQP message . 42

Figure 29 – AMQP in MADES components . 44
Figure 30 – Certificates and certification authorities (CAs) of a MADES system . 67
Figure 31 – WSDL 1.1 definitions . 78

Table 1 – Characteristics of the tracking events . 34
Table 2 – Final state of a message in an endpoint . 38
Table 3 – Services of the client / broker model . 43
Table 4 – Rules for setting up connection/attachment and for message transfer . 45
Table 5 – Internal message – AMQP format: header section . 46
Table 6 – Internal message – AMQP format: properties section . 46
Table 7 – Internal message – AMQP format: application-properties section . 47
Table 8 – Internal message – AMQP format: application-data section . 47
Table 9 – Encryption – Processing metadata attributes for the "AES-256" cipher . 48
Table 10 – Signing – Processing metadata attributes for the "SHA-512" Algorithm . 49
Table 11 – MessageMetadata (type) . 50
Table 12 – InternalMessageType (type: string enumeration) . 51
Table 13 – ProcessingMetadata (type) . 51
Table 14 – MessageProcessor (type) . 51
Table 15 – Map (type) . 51
Table 16 – MapEntry (type) . 51
Table 17 – ValueType (type: string enumeration) . 52
Table 18 – Component-directory – content of an entry . 55
Table 19 – Certificate (type) . 55
Table 20 – MadesImplementation (type) . 56
Table 21 – MessagePath (type) . 56
Table 22 – BrokerRestriction (type) . 56
Table 23 – HTTP operations . 58
Table 24 – HTTP return codes . 58
Table 25 – Component-directory API . 59
Table 26 – Endpoint interface – Generic error . 72
Table 27 – Endpoint interface – Value for errorCode . 72
Table 28 – SendMessage – Request elements . 72
Table 29 – SentMessage (type) . 73
Table 30 – SendMessage – Response elements . 73
Table 31 – SendMessage – Additional error elements . 73
Table 32 – ReceiveMessage – Request elements . 74
Table 33 – ReceiveMessage – Response elements. 74
Table 34 – ReceivedMessage (type) . 74
Table 35 – ReceiveMessage – Additional error elements . 74
Table 36 – ConfirmReceiveMessage – Request elements . 75
Table 37 – ConfirmReceiveMessage – Response elements . 75
Table 38 – ConfirmReceiveMessage – Additional error elements . 75
Table 39 – CheckMessageStatus – Request elements . 75

– 6 – IEC 62325-503:2018  IEC 2018
Table 40 – CheckMessageStatus – Response elements . 76
Table 41 – MessageStatus (type) . 76
Table 42 – MessageTraceItem (type) . 76
Table 43 – MessageState or MessageTraceState (Type: string enumeration) . 76
Table 44 – CheckMessageStatus – Additional error elements . 77
Table 45 – ConnectivityTest – Request elements . 77
Table 46 – ConnectivityTest – Response elements . 77
Table 47 – ConnectivityTest – Additional error elements . 77
Table 48 – FSSF – Folders and filename format . 85
Table 49 – FSSF – Tokens used to generate the filenames . 85

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FRAMEWORK FOR ENERGY MARKET COMMUNICATIONS –

Part 503: Market data exchanges guidelines for the IEC 62325-351 profile

FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62325-503 has been prepared by IEC technical committee 57:
Power systems management and associated information exchange.
This edition cancels and replaces IEC TS 62325-503 published in 2014.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Use of ISO/IEC 19464:2014, Advanced Message Queuing Protocol (AMQP) v1.0
specification;
b) Splitting of the node described in the IEC TS 62325-503:2014 into a broker that
implements the messaging function and a directory;
c) Increase of operability and resilience of the communication system with the ability for an
endpoint to send and receive messages through several brokers;
d) Benefits of standardisation, performance and scalability of the AMQP protocol for
transferring messages.
– 8 – IEC 62325-503:2018  IEC 2018
The text of this standard is based on the following documents:
CDV Report on voting
57/1936/CDV 57/1983/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this document, the following print types are used:
Help the visibility of information in table and diagram: in italic type
A list of all parts in the IEC 62325 series, published under the general title Framework for
energy market communications, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours, which are considered useful for the correct understanding of
its contents. Users should therefore print this document using a colour printer.

INTRODUCTION
This document is part of the IEC 62325 series for deregulated energy market communications.
The principal objective of the IEC 62325 series is to produce documents which facilitate the
integration of market application software developed independently by different vendors into a
market management system, between market management systems and market participant
systems. This is accomplished by defining message exchanges to enable these applications
or systems access to public data and exchange information independent of how such
information is represented internally.
The common information model (CIM) specifies the basis for the semantics for the message
exchange. The European style market profile specifications that support the European style
design electricity markets are defined in IEC 62325-351. These electricity markets are based
on the European regulations, and on the concepts of third party access and zonal markets.
The IEC 62325-451-n International documents specify the content of the messages
exchanged.
The purpose of this document is to provide the guidelines to exchange the above-mentioned
messages. A European market participant (trader, distribution utilities, etc.) could benefit from
a single, common, harmonised, secure platform for message exchange with the European
Transmission System Operators (TSOs); thus reducing the cost of building different IT
platforms to interface with all the parties involved.
This document represents an important step in facilitating parties entering into electricity
markets other than their national ones; they could use the same or similar information
exchange system to participate in more than one market all over Europe.
This document was originally based upon the work of the European Network of Transmission
System Operators (ENTSO-E) Working Group EDI.

– 10 – IEC 62325-503:2018  IEC 2018
FRAMEWORK FOR ENERGY MARKET COMMUNICATIONS –

Part 503: Market data exchanges guidelines for the IEC 62325-351 profile

1 Scope
This part of IEC 62325 is for European electricity markets.
This document specifies a standard for a communication platform which every Transmission
System Operator (TSO) in Europe can use to exchange reliably and securely documents for
the energy market. Consequently a European market participant (TSO, regional supervision
centre, distribution utility, power exchange, etc.) could benefit from a single, common,
harmonised and secure platform for message exchange with other participants; thus, reducing
the cost of building different information technology (IT) platforms to interface with all the
parties involved.
“MADES” (MArket Data Exchange Standard) is the acronym to designate this standard.
MADES is a specification for a decentralised common communication platform based on
international IT standards:
• From an application program perspective, MADES specifies the software interfaces to
exchange electronic documents with peer applications. Such interfaces mainly provide
means to send and receive documents using a so-called “MADES communication system”
(or "MADES system" or simply "system"). The sender can request about the status of the
delivery of a document and the recipient issues a message back, the acknowledgement,
when receiving the document. This makes a MADES system usable for exchanging
documents in business processes requiring a reliable delivery.
• MADES also specifies services hidden to the applications such as recipient localisation,
recipient connection status, message routing and security. Services include directory,
authentication, signing, encryption, message tracking, message logging and message
temporary storage.
The purpose of MADES is to create a secured message exchange standard based on
standard communication protocols and utilising IT best practices for exchanging data over any
TCP/IP communication network, in order to facilitate business-to-business (B2B) information
exchanges as described in IEC 62325-351 and the IEC 62325-451 series.
A MADES system acts as a post-office organisation: the transported object is a “message” in
which the document of the sender is securely packaged in an envelope containing metadata,
which is necessary information for transportation, tracking and delivery.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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.
IEC TS 61970-2, Energy management system application program interface (EMS-API) –
Part 2: Glossary
ISO/IEC 19464:2014, Information technology – Advanced Message Queuing Protocol (AMQP)
v1.0 specification, https://www.amqp.org/ (developed by the OASIS open standards
consortium)
ISO/IEC 9594-8:2017, Information technology – Open systems interconnection – The
Directory – Part 8: Public-key and attribute certificate frameworks
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC TS 61970-2 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
NOTE For general glossary definitions, see IEC 60050, International Electrotechnical Vocabulary.
3.1
advanced message queuing protocol
AMQP
open Internet protocol for business messaging, as described in IEC 19464:2014
3.2
advanced message queuing protocol secured with transport layer security
AMQPS
combining of the IEC 19464 business messaging protocol with transport layer security (TLS)
3.3
market data exchange standard
MADES
specification described in this document for the European market style market profile
3.4
representational state transfer
REST
method of providing interoperability between computer systems by requesting to access and
manipulate textual representations of resources using predefined set of stateless operations
3.5
simple authentication and security layer
SASL
framework for authentication and data security in internet protocols
3.6
simple object access protocol
SOAP
protocol specification for exchanging structured information in the implementation of
webservices
3.7
transmission system operator
TSO
entity involved in electric power transmission or in transmission of natural gas

– 12 – IEC 62325-503:2018  IEC 2018
3.8
transport layer security
TLS
cryptographic protocol to provide privacy and data integrity between two communicating
computer applications
4 High level concepts
4.1 What is the purpose of MADES?
NOTE Clause 4 describes the business context for the specification usage, introduces the main concepts of the
specification and does not contain requirements.

Figure 1 – MADES overall view
MADES' first intention is to provide transmission system operators (TSOs) with a standardised
communication system for securely exchanging electronic documents between themselves
and with others parties involved in the European electricity market as shown in Figure 1.
These documents are mainly those used in the energy market and described in
IEC 62325-351 and the IEC 62325-451 series. Such parties include TSOs, regional
supervision centres, power exchanges, distribution system operators, balance responsible
parties, transmission capacity allocators, market operators, capacity traders, producers, etc.
MADES enables each party to host an access point to the communication system:
applications of his information system can then use the access point to send and receive
securely documents with other parties.
Technically, MADES is a data exchange standard comprised of standard communication
protocols and utilising information technology standards and best practices to create a
mechanism for exchanging data over any TCP/IP communication network and infrastructure,
in order to facilitate business-to-business information exchanges.
New market rules induce new business processes and activities, and generally require new
information exchanges between parties. Experience shows that, for the data exchanges to
meet the business goals, the chosen technical solution results from an agreement of all the
involved parties gathering various constraints including implementation time scale, vendors’
offers, already existing communication infrastructure and links, integration capabilities of
existing information systems, confidentiality of exchanged information, legal risks,
performance, etc.
Whereas business processes require that information be exchanged between multiple
systems or multiple parties, solutions developed bilaterally can become complex, each
interface taking time before coming in operation, taking money and resources for development
and maintenance. A noticeable consequence is that some parties involved in business
processes that require exchanges with many others parties have to install and operate
different communication tools and solutions to interface with multiple information systems.
The process towards a more integrated European electricity market creates many such
situations with new coordinated processes between actors with regulated roles. Market
participants acting in several countries are also look
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