IEC TR 62195:2000/AMD1:2002
(Amendment)Amendment 1 - Power system control and associated communications - Deregulated energy market communications
Amendment 1 - Power system control and associated communications - Deregulated energy market communications
Consists of an additional annex dealing with the use of Internet technologies in deregulated energy market communications.
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Standards Content (Sample)
TECHNICAL IEC
REPORT
AMENDMENT 1
2002-04
Amendment 1
Power system control and
associated communications –
Deregulated energy market
communications
IEC 2002 Droits de reproduction réservés Copyright - all rights reserved
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– 2 – TR 62195 Amend. 1 IEC:2002(E)
FOREWORD
This amendment has been prepared by IEC technical committee 57: Power system control
and associated communications.
The text of this amendment is based on the following documents:
Enquiry draft Report on voting
57/556/Q 57/576/RQ, 57/576A/RQ
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until 2003. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
_____________
Page 4
0.1 Reference documents
Add the following reference to the list:
ISO/IEC 14662, Information technology – Open-edi reference model
Page 35
Add the following new annex E:
Annex E
Use of Internet technologies
E.1 Technological advancement
The report gives an overview of market models at the time of writing and possible commu-
nication platforms based on UN/EDIFACT messages or Internet technologies as HTML over
HTTP. Whereas EDIFACT messages were widely used (e.g. in the Ediel System of
Scandinavia and now also in some other European countries and elsewhere), the Internet
approach at the time of writing had the drawback that no standardized messages in HTML
were available leading to proprietary solutions. Also security of the Internet was an issue.
In the meantime the Internet Language Definition Standard XML (eXtensible Markup
Language) was defined by W3C as a subset of SGML (Standard Generalised Markup Lan-
guage). With XML applications can share data using a Schema as DTD (Document Type
Definition) or XSD (XML Schema Definition) which defines the grammar. One of the
outstanding features of XML is that data can be given a name tag which makes it easier to
map data to data bases. Whereas the main purpose of XML is data transmission between
applications and data bases the content can also easily be visualized with an Internet
Browser using CSS (Cascaded Style Sheets) or XSLT (Extensible Stylesheet Language
for Transformation) together with CSS.
TR 62195 Amend. 1 IEC:2002(E) – 3 –
UN/EDIFACT and XML are not competing solutions and can be combined in what is now
called “Web-EDI”. Already regional new initiatives are taken to define their own XML/EDI
solutions. Many XML architectures have been proposed, so far none of these is a global
Standard and they compete against each other. The most promising architecture seems to be
ebXML (electronic business XML) supported by UN/CEFACT (The United Nations Centre for
Trade and Electronic Business) which is intended to become an International Standard. This
architecture can be combined with EDIFACT messages mapped to XML. The mapping is
already done by CommerceNet, XML/EDI Group and ANSI ASC X12 Working Group and will
be soon available in the Internet. Alternatively, the content of EDIFACT messages is re-
engineered using so called core components from a future and hopefully standardized global
e-business XML vocabulary under the auspices of UN/CEFACT.
Business processes can be modelled with the meta language UML (Unified Modeling
Language of Open Management Group (OMG)). Figure E.1 shows the modelling with UML
and the production of XML Schemas with the XMI (XML Meta Interchange) of OMG.
MOF: Meta Object Facility of OMG
MOF model
UML: Unified Modeling Language of OMG
XMI: XML Meta Interchange of OMG
XSD: XML Schema Definition of W3
Instance of
XML: Extensible Markup language of W3
UML Metamodel
Instance of
Modeling Tool
XML Schema
UML Schema produced by XMI
(DTD, XSD)
(Energy Market Model)
Instance of Validated by
XML Document
Translated by XMI
XML Document
Instance of Energy
(Data)
(Data)
Market Model
Figure E.1 – UML-Modelling and XML Schema
Electronic business with XML-messages is estimated to have the potential to become a big
global market within the next couple of years if a single global International Standard can be
successfully implemented. Given the potential of XML it will be wise to base the
communication of electricity markets on the coming XML Standard Architecture of
UN/CEFACT. This allows vendors to offer products across different markets with lower cost.
Using general used platforms has also advantages regarding implementation, test and future
development. In the meantime, besides EDIFACT, also non-standard XML solutions are
possibly which may migrate in the future to the Standard Architecture.
E.2 Generic e-business architecture
The technical Standard Architecture of e-business based on XML should follow the “Open-edi
reference model” (ISO/IEC 14662) and the e-business semantic of the UN/CEFACT UMM
(Unified Modeling Methodology), Document N090, where applicable. The content and
structure of existing EDIFACT messages already used for the electricity market should be
taken into account. Whereas EDIFACT is more intended for large business, the future XML
communication architecture should be scalable and also affordable for small business.
– 4 – TR 62195 Amend. 1 IEC:2002(E)
Figure E.2 below shows the Open-edi environment according to ISO/IEC 14662.
B
U
S
Business Operational View
I
Comply with
BOV RELATED
N
E STANDARDS
Business aspects of
S business transactions
Covered by
S
T
Interrelated
R
A
N
Viewed
S
as
Functional Service View
Comply with
A
FSV RELATED
C
STANDARDS
T
Information technology
I Covered by
aspects of business
O
transactions
N
S
Figure E.2 –
...
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