SIST EN 61400-25-3:2007

SLOVENSKI STANDARD
SIST EN 61400-25-3:2007
01-november-2007
Sistemi generatorjev vetrne turbine - 25-3. del: Komunikacije za spremljanje in
nadzor vetrnih elektrarn - Modeli za izmenjavo informacij (IEC 61400-25-3:2006)
Wind turbines - Part 25-3: Communications for monitoring and control of wind power
plants - Information exchange models
Windenergieanlagen - Teil 25-3: Kommunikation für die Überwachung und Steuerung
von Windenergieanlagen - Dienste-Modelle für den Informationsaustausch
Eoliennes - Partie 25-3: Communications pour la surveillance et la commande des
centrales éoliennes - Modeles d'échange d'informations
Ta slovenski standard je istoveten z: EN 61400-25-3:2007
ICS:
27.180 Sistemi turbin na veter in Wind turbine systems and
drugi alternativni viri energije other alternative sources of
energy
SIST EN 61400-25-3:2007 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 61400-25-3

NORME EUROPÉENNE
February 2007
EUROPÄISCHE NORM

ICS 27.180


English version


Wind turbines -
Part 25-3: Communications for monitoring
and control of wind power plants -
Information exchange models
(IEC 61400-25-3:2006)


Eoliennes -  Windenergieanlagen -
Partie 25-3: Communications Teil 25-3: Kommunikation
pour la surveillance et la commande für die Überwachung und Steuerung
des centrales éoliennes - von Windenergieanlagen -
Modèles d'échange d'informations
Dienste-Modelle für den
(CEI 61400-25-3:2006) Informationsaustausch
(IEC 61400-25-3:2006)




This European Standard was approved by CENELEC on 2007-02-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61400-25-3:2007 E

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EN 61400-25-3:2007 - 2 -
Foreword
The text of document 88/276/FDIS, future edition 1 of IEC 61400-25-3, prepared by IEC TC 88, Wind
turbines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61400-25-3 on 2007-02-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-02-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61400-25-3:2006 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 61400-25-3:2007
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 61400-25 Series Wind turbines - EN 61400-25 Series
Part 25: Communications for monitoring and
control of wind power plants


IEC 61850-7-2 2003 Communication networks and systems in EN 61850-7-2 2003
substations -
Part 7-2: Basic communication structure for
substation and feeder equipment - Abstract
communication service interface (ACSI)

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INTERNATIONAL IEC


STANDARD 61400-25-3





First edition
2006-12


Wind turbines –
Part 25-3:
Communications for monitoring
and control of wind power plants –
Information exchange models
© IEC 2006 ⎯ 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 V
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

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– 2 – 61400-25-3 © IEC:2006(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .8
3 Terms and definitions .9
4 Abbreviated terms .12
5 General .12
6 Information exchange models overview .13
7 Operational functions .15
7.1 General .15
7.2 Association and authorisation model .15
7.3 Control model.16
7.4 Monitoring, reporting and logging model.16
8 Management functions .18
8.1 General .18
8.2 User management/access security model.18
8.3 Setup model .18
8.4 Time synchronisation model .18
8.5 Diagnostic (self-monitoring) model .18
9 The ACSI for wind power plant information models.19
9.1 General .19
9.2 Services of Association and authorisation .19
9.3 Services of Server class .20
9.4 Services of Logical Device class .20
9.5 Services of Logical Node class.21
9.6 Services of Data class.21
9.7 Services of DataSet class.21
9.8 Services of Report Control Block class .22
9.9 Services of Log Control Block and Log classes .24
9.10 Services of control class.26

Annex A (informative) Examples of reporting and logging services.27
Annex B (normative) Relationship between ACSI Services and Functional Constraints .29
Annex C (informative) Relationship between ACSI defined in IEC 61850-7-2 and
IEC 61400-25-3 .31

Figure 1 – Conceptual communication model of the IEC 61400-25 series .8
Figure 2 – Association and authorisation model (conceptual) .15
Figure 3 – Control model (conceptual) .16
Figure 4 – Monitoring, reporting and logging model (conceptual) .17
Figure 5 – Conceptual information exchange model for a wind power plant.19
Figure 6 – Buffered report control block – conceptual .23
Figure 7 – Log control block – conceptual .26

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61400-25-3 © IEC:2006(E) – 3 –
Figure A.1 – Mapping of Information Models to Data Sets for reporting (example) .27
Figure A.2 – Logging basics (example) .28
Figure C.1 – Conceptual service model of the ACSI.32

Table 1 – Information exchange models.14
Table 2 – Comparison of the information retrieval methods.18
Table 3 – Two-Party-Application-Association .20
Table 4 – Server .20
Table 5 – Logical Device.20
Table 6 – Logical Node .21
Table 7 – DATA .21
Table 8 – DATA-SET .21
Table 9 – REPORT-CONTROL .22
Table 10 – AddSubscription service .23
Table 11 – RemoveSubscription service .24
Table 12 – LOG and LOG-CONTROL .25
Table 13 – Data filter .25
Table 14 – CONTROL.26
Table B.1 – Relationship between ACSI Services and Functional Constraints.30

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– 4 – 61400-25-3 © IEC:2006(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

WIND TURBINES –

Part 25-3: Communications for monitoring
and control of wind power plants –
Information exchange models


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
international 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,
Technical 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 organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization 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
interested 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
misinterpretation 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
between 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
equipment 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
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
International Standard IEC 61400-25-3 has been prepared by IEC technical committee 88:
Wind turbines.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The text of this standard is based on the following documents:
FDIS Report on voting
88/276/FDIS 88/282/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all parts of the IEC 61400 series, under the general title Wind turbines can be found
on the IEC website.

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61400-25-3 © IEC:2006(E) – 5 –
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 version of this publication may be issued at a later date.

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– 6 – 61400-25-3 © IEC:2006(E)
INTRODUCTION
The IEC 61400-25 series defines communications for monitoring and control of wind power
plants. The modeling approach of the IEC 61400-25 series has been selected to provide
abstract definitions of classes and services such that the specifications are independent of
specific protocol stacks, implementations, and operating systems. The mapping of these
abstract classes and services to a specific communication profile is not inside the scope of
1
this part (IEC 61400-25-3) but inside the scope of IEC 61400-25-4 .
This part of IEC 61400-25 defines services of the model of the information exchange of
intelligent electronic devices in wind power plants. The services are referred to as the
Abstract Communication Service Interface (ACSI). The ACSI has been defined so as to be
independent of the underlying communication systems.
The information exchange model is defined in terms of
– a hierarchical class model of all information that can be accessed,
– information exchange services that operate on these classes,
– parameters associated with each information exchange service.
The ACSI description technique abstracts away from all the different approaches to implement
the cooperation of the various devices.
These abstract service definitions shall be mapped into concrete object definitions that are to
be used for a particular protocol. Mapping to specific protocol stacks is specified in
IEC 61400-25-4.
NOTE 1 Abstraction in ACSI has two meanings. Firstly, only those aspects of a real device (for example, a rotor)
or a real function that are visible and accessible over a communication network are modelled. This abstraction
leads to the hierarchical class models and their behaviour defined in IEC 61400-25-2. Secondly, the ACSI abstracts
from the aspect of concrete definitions on how the devices exchange information; only a conceptual cooperation is
defined. The concrete information exchange is defined in IEC 61400-25-4.
NOTE 2 Performance of the IEC 61400-25 series implementations are application specific. The IEC 61400-25
series does not guarantee a certain level of performance. This is beyond the scope of the IEC 61400-25 series.
However, there is no underlying limitation in the communications technology to prevent high speed application
(millisecond level responses).
—————————
1
To be published.

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61400-25-3 © IEC:2006(E) – 7 –
WIND TURBINES –

Part 25-3: Communications for monitoring
and control of wind power plants –
Information exchange models



1 Scope
The focus of the IEC 61400-25 series is on the communications between wind power plant
components such as wind turbines and actors such as SCADA Systems. Internal
communication within wind power plant components is outside the scope of the IEC 61400-25
series.
The IEC 61400-25 series is designed for a communication environment supported by a client-
server model. Three areas are defined, that are modelled separately to ensure the scalability
of implementations: (1) wind power plant information models, (2) information exchange model,
and (3) mapping of these two models to a standard communication profile.
The wind power plant information model and the information exchange model, viewed
together, constitute an interface between client and server. In this conjunction, the wind
power plant information model serves as an interpretation frame for accessible wind power
plant data. The wind power plant information model is used by the server to offer the client a
uniform, component-oriented view of the wind power plant data. The information exchange
model reflects the whole active functionality of the server. The IEC 61400-25 series enables
connectivity between a heterogeneous combination of client and servers from different
manufacturers and suppliers.
As depicted in Figure 1, the IEC 61400-25 series defines a server with the following aspects:
– information provided by a wind power plant component, e. g., “wind turbine rotor speed” or
“total power production of a certain time interval” is modelled and made available for
access. The information modelled in the IEC 61400-25 series is defined in IEC 61400-25-
2;
– services to exchange values of the modelled information defined in part IEC 61400-25-3;
– mapping to a communication profile, providing a protocol stack to carry the exchanged
values from the modelled information (part IEC 61400-25-4).
The IEC 61400-25 series only defines how to model the information, information exchange
and mapping to specific communication protocols. The IEC 61400-25 series excludes a
definition of how and where to implement the communication interface, the application
program interface and implementation recommendations. However, the objective of the IEC
61400-25 series is that the information associated with a single wind power plant component
(such as a wind turbine) is accessible through a corresponding logical device.
This part of IEC 61400-25 specifies an abstract communication service interface describing
the information exchange between a client and a server for:
– data access and retrieval,
– device control,
– event reporting and logging,
– publisher/subscriber,
– self-description of devices (device data dictionary),
– data typing and discovery of data types.

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– 8 – 61400-25-3 © IEC:2006(E)

Communication model of the IEC 61400-25 series
Client Server
Messaging
Messaging
Information exchange Information exchange
Information exchange through mapping Information exchange
through mapping
model (get, set, report, model (get, set, report,
model (get, set, report, to communication model (get, set, report,
to communication
log, control, publish / log, control, publish /
log, control, publish / profile (Read, log, control, publish /
profile (Read,
subscribe, etc.) subscribe, etc.)
subscribe, etc.) write, . message) subscribe, etc.)
write, . message)
defined in defined in
defined in defined in defined in
defined in
Wind power
Actor IEC 61400-25-3 IEC 61400-25-3
IEC 61400-25-3 IEC 61400-25-4 IEC 61400-25-3
IEC 61400-25-4 plant
e.g.
SCADA component
e.g. wind turbine
Wind power plant Wind power plant
Wind power plant Wind power plant
information model information model
information model information model
(rotor speed, break
defined in
(rotor speed, break
defined in
status, total power
status, total power
Application IEC 61400-25-2 Application
production, etc.)
IEC 61400-25-2
production, etc.)
defined in
defined in
IEC 61400-25-2
IEC 61400-25-2
Outside
Outside
scope
scope

IEC  2172/06
Figure 1 – Conceptual communication model of the IEC 61400-25 series


2 Normative references
The following referenced documents are indispensable for the application of this part of the
IEC 61400-25 series. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments)
applies.
IEC 61400-25 (all parts), Wind turbines – Part 25: Communications for monitoring and control
of wind power plants
IEC 61850-7-2:2003, Communication networks and systems in substations – Part 7-2: Basic
communication structure for substations and feeder equipment – Abstract communication
service interface (ACSI)

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61400-25-3 © IEC:2006(E) – 9 –
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
actor
role a system plays in the context of monitoring and control, while it is not directly involved in
wind power plant operation, such as Supervisory Control and Data Acquisition System
(SCADA)
NOTE There are many other designations, for example, Central Management System, Monitoring and Control
System, Remote Control System.
3.2
alarm
state information. Statement of safety intervention by the wind turbine control system (i.e
on/off)
3.3
command
controllable data for system behaviour (enable/disable, active/deactivate, etc.)
3.4
communication function
used by an actor to configure, perform and monitor the information exchange with wind power
plants, for example operational and management function
3.5
control
operational function used for changing and modifying, intervening, switching, controlling,
parameterisation and optimising of wind power plants
3.6
data retrieval
operational function used for collecting of wind power plant data
3.7
diagnostics
management function used to set up and provide for self-monitoring of the communication
system
3.8
event
state transition (status, alarm, command)
3.9
intelligent Electronic Device
IED
any device incorporating one or more processors, with the capability to receive data from an
external sender or to send data to an external receiver
NOTE For example, wind turbine controller. An IED may have connections as a client, or as a server, or both, with
other IED.

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– 10 – 61400-25-3 © IEC:2006(E)
3.10
information
content of communication. Information is defined as data (usually processed and derived
data, and information describing other data). The basic element is raw data from the wind
power plant component, which should be processed into specified information according to
the IEC 61400-25 series
NOTE Wind power plant information categories: source information (analogue and state information), control
information, derived information (statistical and historical information).
3.11
information exchange
communication process between two systems, such as wind power component and actor, with
the goal to provide and to get relevant information. Requires specific communication
functions, consisting of one or more services
3.12
log
historical information. Chronological list of source information for a period of time
3.13
logging
operational function The praxis of recording sequential data often chronologically. The result
of the logging is a log
3.14
logical device
Entity that represent a set of typical wind power plant functions
3.15
management function
function required for the administration of the information exchange in a certain level
NOTE Management functions are user/access management, time synchronisation, diagnostics, and configuration.
3.16
mandatory
defined content shall be provided in compliance with the IEC 61400-25 series
3.17
measured data
sampled value of a process quantity with associated data attributes such as time stamp and
quality
3.18
meteorological system
component of a wind power plant responsible for the monitoring of the ambient conditions, for
example the wind speed, wind direction, pressure, temperature etc. It supplies data for
various purposes for example to correlate the meteorological data to the electrical energy
output by individual wind turbines to the potentially usable wind energy
3.19
monitoring
operational function used for local or remote observation of a system or a process for any
changes which may occur over time. The term can also be used for observation of the
behaviour of a data value or a group of data values

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61400-25-3 © IEC:2006(E) – 11 –
3.20
operational function
function to obtain information and to send instructions for the normal daily operation of wind
power plants. Types: monitoring, logging and reporting, data retrieval, control
3.21
optional
defined content can be optionally provided in compliance to the IEC 61400-25 series
3.22
parameter
controllable information intended for obtaining or correcting system behaviour
3.23
processed value
measured value, with the associated data attributes such as time stamp and quality, which
have been processed according the calculation method attribute (10m-average/…)
3.24
report
actual information sent by the function reporting
3.25
reporting
operational function to transfer data from a server to a client, initiated by a server application
process
3.26
Supervisory Control and Data Acquisition
SCADA
system based on a processor unit wh
...