SIST EN 61400-25-3:2007
Wind turbines -- Part 25-3: Communications for monitoring and control of wind power plants - Information exchange models
Wind turbines -- Part 25-3: Communications for monitoring and control of wind power plants - Information exchange models
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 clientserver 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.
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 - Modèles d'échange d'informations
Sistemi generatorjev vetrne turbine - 25-3. del: Komunikacije za spremljanje in nadzor vetrnih elektrarn - Modeli za izmenjavo informacij (IEC 61400-25-3:2006)
General Information
Relations
Standards Content (Sample)
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.
---------------------- Page: 1 ----------------------
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
---------------------- Page: 2 ----------------------
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
---------------------- Page: 5 ----------------------
– 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
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Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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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.
---------------------- Page: 8 ----------------------
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.
---------------------- Page: 9 ----------------------
– 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
...
SLOVENSKI oSIST prEN 61400-25-3:2005
PREDSTANDARD
november 2005
Sistemi generatorjev vetrne turbine – 25-3. del: Komunikacije za spremljanje
in nadzor vetrnih elektrarn – Modeli za izmenjavo informacij
Wind turbines – Part 25-3: Communications for monitoring and control of wind
power plants – Information exchange models
ICS 27.180; 35.240.50 Referenčna številka
oSIST prEN 61400-25-3:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
---------------------- Page: 1 ----------------------
88/240/CDV
COMMITTEE DRAFT (CD)
Project number
IEC/TC or SC:
IEC 61400-25-3 Ed.1
TC 88
Date of circulation Closing date for comments
Title of TC/SC:
2005-08-05 2006-01-06
Wind Turbines
Also of interest to the following committees Supersedes document
TC 57 88/215/CD & 88/235/CC
Functions concerned:
Safety EMC Environment Quality assurance
Secretary:
THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT
SHOULD NOT BE USED FOR REFERENCE PURPOSES.
A.C. van der Giessen
RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR
COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF
WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING
DOCUMENTATION.
Title: Wind turbines - Part 25-3: Communications for monitoring and control of wind power plants –
Information exchange models
Introductory note
This CDV contains a solution for communications for monitoring and control of wind power plants. IEC
61400-25 defines wind power plant specific information, the mechanisms for information exchange and
the mapping to communication protocols.
IEC 61400-25 consists of the following parts, under the general title Communications for monitoring and
control of wind power plants:
Part 25-1 Overall description of principles and models
Part 25-2: Information models
Part 25-3: Information exchange models
Part 25-4: Mapping to communication profile
Part 25-5: Conformance testing
The documents have been drawn up by IEC TC88 Project Team 25, consisting of experts from many of
the large vendors as well as representatives of utilities, consultants and suppliers of third-party products.
All parts are distributed for comments and voting simultaneously, as committee drafts for voting (CDV).
No major technical changes have been made as a result of the comments and proposals received on the
CD (88/215/CD), most comments having been editorial.
ATTENTION ATTENTION
CDV soumis en parallèle au vote (CEI) Parallel IEC CDV/CENELEC Enquiry
et à l’enquête (CENELEC)
Copyright © 2005 International Electrotechnical Commission, IEC. All rights reserved. It is
permitted to download this electronic file, to make a copy and to print out the content for the sole
purpose of preparing National Committee positions. You may not copy or "mirror" the file or
printed version of the document, or any part of it, for any other purpose without permission in
writing from IEC.
FORM CD (IEC)
International Electrotechnical Commission, IEC
©
2002-08-08
Commission Électrotechnique Internationale, CEI
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61400-25-3 Ed.1/CDV © IEC:2005
1
2
3 WIND TURBINES
4 Part 25-3:
5 Communications for monitoring and control of wind power plants –
6 Information exchange models
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23 Version: 61400-25-3_R0-4 Draft1CDV_2005-07-11
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1
2 CONTENTS
3 FOREWORD.5
4 INTRODUCTION.6
5 1 Scope .7
6 2 Normative references .9
7 3 Terms and definitions .10
8 4 Abbreviated terms .14
9 5 General.15
10 6 Service overview .15
11 7 Operational functions.17
12 7.1 Authorisation model.17
13 7.2 Control model.18
14 7.3 Monitoring and processed wind power plant information model .18
15 8 Management functions.20
16 8.1 Introduction .20
17 8.2 User management / access security model.20
18 8.3 Setup model .20
19 8.4 Time synchronisation model.20
20 8.5 Diagnostic (self-monitoring) model .20
21 9 The ACSI for wind power plant information models.21
22 9.1 General .21
23 9.2 Services of Authorisation .21
24 9.3 Services of Server class .22
25 9.4 Services of Logical Device class .22
26 9.5 Services of Logical Node class .22
27 9.6 Services of Data class .23
28 9.7 Services of DataSet class .23
29 9.8 Services of Report Control Block class.23
30 9.8.1 ACSI conformant services .23
31 9.8.2 AddSubscribtion.24
32 9.8.3 RemoveSubscription .26
33 9.9 Services of Log Control Block and Log classes.26
34 9.10 Services of control class .27
35 Annex A (informative) Examples of services .29
36 A.1 Reporting example .29
37 A.2 Logging example .29
38
39 Figure 1 – Conceptual communication model of IEC 61400-25.8
40 Figure 2 – Authorisation model (conceptual).17
41 Figure 3 – Control model (conceptual).18
42 Figure 4 – Monitoring model (conceptual).19
43 Figure 5 – Server (conceptual) .21
44 Figure 6 – Buffered report control block – conceptual .24
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1 Figure 7 – Log control block – conceptual.27
2
3 Table 1 – Information exchange models .16
4 Table 2 – Comparison of the monitoring methods .20
5 Table 3 – Two-Party-Application-Association .22
6 Table 4 – Server .22
7 Table 5 – Logical Device.22
8 Table 6 – Logical Node .22
9 Table 7 – DATA .23
10 Table 8 – DATA-SET .23
11 Table 9 – REPORT-CONTROL.24
12 Table 10 – AddSubscribtion service .25
13 Table 11 – RemoveSubscribtion service .26
14 Table 12 – LOG and LOG-CONTROL .26
15 Table 13 – Data filter .27
16 Table 14 – CONTROL.28
17
18
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1
2 INTERNATIONAL ELECTROTECHNICAL COMMISSION
3 ____________
4
5 WIND TURBINES –
6
7 Part 25-3:
8 Communications for monitoring and control of wind power plants –
9 Information exchange models
10
11 FOREWORD
12 1) The IEC (International Electrotechnical Commission) is a worldwide organisation for standardisation comprising
13 all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
14 international co-operation on all questions concerning standardisation in the electrical and electronic fields. To
15 this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
16 entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
17 participate in this preparatory work. International, governmental and non-governmental organisations liaising
18 with the IEC also participate in this preparation. The IEC collaborates closely with the International
19 Organisation for Standardisation (ISO) in accordance with conditions determined by agreement between the
20 two organisations.
21 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
22 international consensus of opinion on the relevant subjects since each technical committee has representation
23 from all interested National Committees.
24 3) The documents produced have the form of recommendations for international use and are published in the form
25 of standards, technical specifications, technical reports or guides and they are accepted by the National
26 Committees in that sense.
27 4) In order to promote international unification, IEC National Committees undertake to apply IEC International
28 Standards transparently to the maximum extent possible in their national and regional standards. Any
29 divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
30 indicated in the latter.
31 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
32 equipment declared to be in conformity with one of its standards.
33 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
34 of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
35 Recipients of this document are invited to submit, with their comments, notification of
36 any relevant patent rights of which they are aware and to provide supporting documen-
37 tation.
38 This committee draft for voting of the International Standard IEC 61400-25-3 has been pre-
39 pared by IEC technical committee 88: Wind turbines Project team 25.
40 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
41 IEC 61400-25 consists of the following parts, under the general title Communications for
42 monitoring and control of wind power plants:
1
43 Part 25-1: Overall description of principles and models
1
44 Part 25-2: Information models
1
45 Part 25-3: Information exchange models
1
46 Part 25-4: Mapping to communication profile
1
47 Part 25-5: Conformance testing
48
———————
1
To be published
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1 INTRODUCTION
2 This part of IEC 61400-25 is part of a set of specifications. IEC 61400-25 defines communica-
3 tion architecture for wind power plants. This architecture has been chosen to provide abstract
4 definitions of classes and services such that the specifications are independent of specific
5 protocol stacks, implementations, and operating systems. The mapping of these abstract
6 classes and services to communication stacks is outside the scope of IEC 61400-25-3 and
7 may be found in IEC 61400-25-4.
8 This part of IEC 61400-25 defines functions and services of the model of the information ex-
9 change of intelligent electronic devices in wind power plants. The services are referred to as
10 the abstract communication service interface (ACSI) The ACSI has been defined so as to
11 be independent of the underlying communication systems.
12 The abstract information exchange interface is defined in terms of
13 – a hierarchical class model of all information that can be accessed via a communication
14 network
15 – services that operate on these classes, and
16 – parameters associated with each service
17 The ACSI description technique abstracts away from all the different approaches to implement
18 the cooperation of the various devices.
19 These abstract service definitions shall be mapped into concrete object definitions that are to
20 be used for a particular protocol.
21 NOTE 1 Abstraction in ACSI has two meanings. First, only those aspects of a real device (for example, a rotor) or
22 a real function that are visible and accessible over a communication network are modelled. This abstraction leads
23 to the hierarchical class models and their behaviour defined in IEC 61400-25-2. Second, the ACSI abstracts from
24 the aspect of concrete definitions on how the devices exchange information; only a conceptual cooperation is de-
25 fined. The concrete information exchange is defined in IEC 61400-25-4.
26 NOTE 2 Performance of IEC 61400-25 implementations are application specific. The standard does not guarantee
27 a certain level of performance. That’s out of the scope. However there is no underlying limitation in the communica-
28 tions technology to prevent high speed application (millisecond level responses).
29 NOTE 3 The standard IEC 61400-25 has a close relation with other IEC projects like IEC 61850 Addendum 1
30 (Communication networks and systems in substation, Power Quality Monitoring), IEC 62350 (Communications Sys-
31 tems for Distributed Energy Resources (DER)), and IEC 62344 (Hydroelectric power plants – Communication for
32 monitoring and control).
33
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1
2 WIND TURBINES –
3
4 Part 25-3:
5 Communications for monitoring and control of wind power plants –
6 Information exchange models
7 1 Scope
8 The focus of IEC 61400-25 is on the communications between wind power plant components
9 such as wind turbines and actors such as SCADA Systems. Internal communication within
10 wind power plant components is outside the scope of this standard.
11 IEC 61400-25 is designed for a communication environment supported by a client-server
12 model. Three areas are defined, that are modelled separately to ensure the scalability of im-
13 plementations: (1) wind power plant information models, (2) information exchange model, and
14 (3) mapping of these two models to a standard communication profile.
15 The wind power plant information model and the information exchange model, viewed to-
16 gether, constitute an interface between client and server. In this conjunction, the wind power
17 plant information model serves as an interpretation frame for available wind power plant data.
18 The wind power plant information model is used by the server to offer the client a uniform,
19 component-oriented view of the wind power plant data. The information exchange model re-
20 flects the whole active functionality of the server. IEC 61400-25 enables connectivity between
21 a heterogeneous combination of client and servers from different manufacturers and suppli-
22 ers.
23 As depicted in Figure 1 IEC 61400-25 defines mainly a server with the following aspects:
24 − information provided by a real application of a wind power plant component, e. g.,
25 “wind turbine rotor speed” or “total power production of a certain time interval” is mod-
26 elled and made available for access. The information modelled in the standard is de-
27 fined in part IEC 61400-25-2.
28 − services to exchange values of the modelled information defined in part IEC 61400-
29 25-3
30 − mapping to a communication profile, providing a protocol stack to carry the ex-
31 changed values from the modelled information (part IEC 61400-25-4)
32 IEC 61400-25 only defines how to model the information, information exchange and mapping
33 to specific communication protocols. The standard excludes a definition of how and where to
34 implement the communication interface. However, the objective of the standard is that the in-
35 formation associated with a single wind power plant component (such as the wind turbine) is
36 accessible through a corresponding logical device.
37 This part of IEC 61400-25 specifies an abstract interface (the abstract messages) describing
38 information exchange between a client and a server for
39 – data access and retrieval
40 – device control
41 – event reporting and logging
42 – publisher/subscriber
43 – self-description of devices (device data dictionary)
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1 – data typing and discovery of data types
2 •
Communication model of IEC 61400-25
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 / log, control, publish /
profile (Read,
profile (Read,
subscribe, …) subscribe, …)
subscribe, …) write, . message) subscribe, …)
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 61400-25-3
IEC 61400-25-4
plant
e. g. IEC 61400-25-4
component
SCADA
e. g. wind turbine
Wind power plant Wind power plant
Wind power plant Wind power plant
information model information model
information model information model
(roto speed, break
defined in
(roto speed, break
defined in
status, total power
status, total power
Application IEC 61400-25-2 Application
IEC 61400-25-2 production, …)
production, …)
defined in
defined in
IEC 61400-25-2
IEC 61400-25-2
Outside
Outside
scope
scope
3
4 Figure 1 – Conceptual communication model of IEC 61400-25
5
6 NOTE 1 IEC 61400-25-3 excludes definition of an application program interface and implementation rec-
7 ommendations.
8
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1 2 Normative references
2 The following referenced documents are indispensable for the application of this document.
3 For dated references, only the edition cited applies. For undated references, the latest edition
4 of the referenced document (including any amendments) applies.
5 IEC 61400-25-1, Communications for monitoring and control of wind power plants – Overall
2
6 description of principles and models
7 IEC 61400-25-2, Communications for monitoring and control of wind power plants – Informa-
3
8 tion models
9 IEC 61850-7-2:2003, Communication networks and systems in substations – Part 7-2: Basic
10 communication structure for substations and feeder equipment – Abstract communication ser-
11 vice interface (ACSI)
12
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2
Under preparation
3
Under preparation
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1 3 Terms and definitions
2 For the purpose of this document, the following terms and definitions apply.
3 3.1
4 actor
5 role a system plays in the context of monitoring and control, while it is not directly involved in
6 wind power plant operation, such as Supervisory Control and Data Acquisition System
7 (SCADA). There are a lot of other designations e.g. Central Management System (CMS),
8 Monitoring and Control System, Remote Control System.
9 3.2
10 alarm
11 wind power plant state information. Statement of safety intervention by the wind turbine con-
12 trol system (on/off/warning/acknowledged).
13 3.3
14 command
15 controllable data for system behaviour (enable/disable, enumeration).
16 3.4
17 communication function
18 used by an actor to configure, perform and monitor the information exchange with wind power
19 plants, e.g. operational and management function.
20 3.5
21 control
22 operational function used for changing and modifying, intervening, switching, controlling, pa-
23 rameterisation and optimising of wind power plants.
24 3.6
25 data retrieval
26 operational function used for archiving, exporting and restoring of wind power plant data.
27 3.7
28 diagnostics
29 management function used to set up and provide for self-monitoring of wind power plant com-
30 ponents.
31 3.8
32 event
33 wind power plant state information. State transition (status, alarm, command).
34 3.9
35 function
36 a function is a task that is performed in the control centre or the wind power plant. Generally,
37 a function consists of sub functions that exchange data with each other. Depending on the
38 function definition, functions themselves exchange data with other functions.
39 3.10
40 IED
41 intelligent Electronic Device - e.g. wind turbine controller. An IED may have connections as a
42 client, or as a server, or both, with other IED. An IED is, therefore, any device incorporating
43 one or more processors, with the capability to receive data from an external sender or to send
44 data to an external receiver.
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1 3.11
2 information
3 content of communication. The material basis is raw data, which must be processed into rele-
4 vant information. Wind power plant information categories: source information (analogue and
5 state information), derived information (statistical and historical information).Information is de-
6 fined as data (usually processed and derived data, and meta-data describing other data).
7 3.12
8 information exchange
9 communication process between two systems, such as wind power component and actor, with
10 the goal to provide and to get relevant information. Requires specific communication functions
11 (services).
12 3.13
13 log
14 wind power plant historical information. Chronological list of source information for a period of
15 time.
16 3.14
17 logging and reporting
18 operational function used for analysing, reporting and evaluating of wind power plants.
19 3.15
20 management function
21 required for the higher-level administration of the information exchange. Used by certain ac-
22 tors to define general rules for the monitoring and control of wind power plants and to monitor
23 their compliance. Types are, e.g., user/access management, time synchronisation, diagnos-
24 tics, setup.
25 3.16
26 mandatory
27 information shall be provided by an implementation of this standard.
28 3.17
29 measured value
30 wind power plant analogue information. Sampled value of a process quantity.
31 3.18
32 meta-data
33 information that specifies data and ensures unambiguous interpretation of information. In-
34 cludes information regarding e.g. the source, the type and the accuracy of the primary data
35 exchanged as well as the time, the type of data and the data descriptor.
36 3.19
37 meteorological system
38 component of a wind power plant responsible for the measuring of the wind conditions, e.g.
39 the wind speed. It supplies data for various purposes for example to correlate the meteoro-
40 logical data to the electrical energy output by individual wind turbines to the potentially usable
41 wind energy
42 3.20
43 monitoring
44 operational function used for local or remote observing of the status and changes of states
45 (indications) for wind power plants.
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1 3.21
2 operational function
3 used by actors for the normal daily operation of wind power plants to obtain information on
4 wind power plants and to send instructions to it. Types: monitoring, logging and reporting,
5 data retrieval, control.
6 3.22
7 optional
8 information may be provided by an implementation of this standard.
9 3.23
10 parameter
11 wind power plant analogue information. Controllable value for system behaviour (adjustment).
12 3.24
13 processed value
14 wind power plant analogue information. Measured value, which has been, processed (10m-
15 average/…).
16 3.25
17 report
18 wind power plant historical information. Event-driven or periodical notification of information
19 comprising also statistical information and total performance.
20 NOTE The term report (reporting) is also used for the communication service to send spontaneous data from a
21 server to a client.
22 3.26
23 SCADA
24 acronym for Supervisory Control and Data Acquisition. A system based on a processor unit
25 which receives information from IEDs, determines the control requirements and sends com-
26 mands to IEDs. A computer system that the e.g. dispatchers use to monitor the power distri-
27 bution throughout a service or control area.
28 3.27
29 signal
30 in monitoring direction: a set comprising a process value (e.g., status), a time stamp, and
31 quality information.
32 In control direction: a set comprising a process value (e.g., open), a time stamp, and addi-
33 tional information.
34 NOTE The engineering unit of a measured value is not a signal in this sense. The signal in control direction is
35 called a command (see 3.4 – command).
36 3.28
37 status
38 Wind power plant state information. Condition of a component or system (st1/st2/.stn).
39 3.29
40 setup
41 management function used for configuration of wind power plant components.
42 3.30
43 spontaneous data transfer
44 unsolicited data transfer (called a “communication” report) initiated by a server application
45 process upon events or change of data.
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1 3.31
2 three phase value
3 wind power plant analogue information. Measured value in a three phase electrical circuit.
4 3.32
5 user / access management
6 management function used for setting up, modifying, deleting users (administratively), assign-
7 ing access rights (administratively) and monitoring access.
8 3.33
9 wind power plant
10 complete system consisting of any number of technical subsystems referred to in this stan-
11 dard as wind power plant components. The main task of wind power plants is to generate
12 electrical energy and to provide it for consumption. Operation concepts: individual and inte-
13 grated operation.
14 3.34
15 wind power plant analogue information
16 continuous information concerning the actual condition or behaviour of a component or sys-
17 tem. Types are, e.g., measured value, processed value, three phase value, setpoint, parame-
18 ter.
19 3.35
20 wind power plant component
21 technical system employed i
...
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