Wind energy generation systems - Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and models

NEW!IEC 61400-25-1:2017 is available as IEC 61400-25-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61400-25-1:2017 gives an overall description of the principles and models used in the IEC 61400­25 series, which 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: wind power plant information models, information exchange model, and mapping of these two models to a standard communication profile. This new edition includes the following significant technical changes with respect to the previous edition: general harmonization of text and overview models with the other parts of the IEC 61400­25 series, harmonization of definitions in other related standards.

Windenergieanlagen - Teil 25-1: Kommunikation für die Überwachung und Steuerung von Windenergieanlagen - Einführende Beschreibung der Prinzipien und Modelle

Systèmes de génération d’énergie éolienne - Partie 25-1: Communications pour la surveillance et la commande des centrales éoliennes - Description globale des principes et des modèles

NEW!IEC 61400-25-1:2017 est disponible sous forme de IEC 61400-25-1:2017 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L’IEC 61400-25-1:2017 fournit une description globale des principes et des modèles utilisés dans la série IEC 61400-25, qui est conçue pour un environnement de communication fondé sur un modèle client-serveur. Trois domaines sont définis, qui sont modélisés séparément pour assurer l’extensibilité des systèmes mis en œuvre: les modèles d’information des centrales éoliennes, le modèle d’échange d’information, et le mapping des deux modèles précédents à un profil de communication normalisé. Cette nouvelle édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: harmonisation générale du texte et des modèles présentés avec les autres parties de la série IEC 61400-25, harmonisation des définitions des autres normes connexes.

Sistemi za proizvodnjo energije na veter - 25-1. del: Komunikacije za spremljanje in nadzor vetrnih elektrarn - Celoten opis načel in modelov (IEC 61400-25-1:2017)

Standard IEC 61400-25 (vsi deli) se osredotoča na komunikacije med sestavnimi deli vetrnih elektrarn, kot so vetrne turbine, in elementi, kot so sistemi SCADA. Komunikacije znotraj sestavnih delov vetrnih elektrarn niso zajete v standardu IEC 61400-25 (vsi deli).
Standard IEC 61400-25 (vsi deli) je zasnovan za komunikacijsko okolje, ki ga podpira model odjemalec-strežnik. Opredeljena so tri področja, ki so oblikovana posebej, da se zagotovi nadgradljivost uporabljenih različic:
1) informacijski modeli vetrnih elektrarn,
2) model za izmenjavo informacij,
3) preslikava teh dveh modelov v standardni komunikacijski profil.
Informacijski model vetrne elektrarne in model za izmenjavo informacij skupaj sestavljata vmesnik med odjemalcem in strežnikom. Informacijski model vetrne elektrarne se uporablja kot okvir za interpretacijo dostopnih podatkov vetrne elektrarne. Strežnik uporablja informacijski model vetrne elektrarne, da odjemalcu ponuja enoten pregled podatkov vetrne elektrarne, ki je osredotočen na sestavne dele elektrarne. Model za izmenjavo informacij predstavlja aktivne funkcije strežnika. Standard IEC 61400-25 (vsi deli) omogoča povezljivost med raznolikimi odjemalci in strežniki različnih proizvajalcev in dobaviteljev.
Kot je prikazano na sliki 1, standard IEC 61400-25 (vsi deli) opredeljuje strežnik z naslednjimi vidiki:
– informacija, ki jo posreduje sestavni del vetrne elektrarne, na primer »hitrost rotorja vetrne turbine« ali »skupna proizvodnja energije v določenem časovnem intervalu«, se modelira in postane dostopna. Informacija, ki se modelira skladno s standardom IEC 61400-25, je opredeljena v delih IEC 61400-25-2 in IEC 61400-25-6;
– storitve za izmenjavo vrednosti modelirane informacije so opredeljene v standardu IEC 61400-25-3;
– preslikava v komunikacijski profil, kar zagotavlja sklad protokolov za prenos izmenjanih vrednosti iz modelirane informacije (IEC 61400-25-4).
Standard IEC 61400-25 (vsi deli) opredeljuje zgolj način modeliranja informacij, izmenjavo informacij in preslikavo v določen komunikacijski protokol. Standard IEC 61400-25 (vsi deli) ne določa, kako in kje je treba uvesti komunikacijski vmesnik, programski vmesnik in priporočila za izvajanje. Vendar cilj standarda IEC 61400-25 (vsi deli) je omogočiti dostop do informacij posameznega sestavnega dela vetrne elektrarne (npr. vetrne turbine) prek ustrezne logične naprave.
Ta del standarda IEC 61400-25 podaja splošen opis načel in modelov, uporabljenih v skupini standardov IEC 6140025 (vsi deli).
OPOMBA 1: Standard IEC 61400-25 (vsi deli) se osredotoča na skupne informacije, ki niso vezane na določenega prodajalca. Te elemente informacij, ki se običajno zelo razlikujejo glede na uporabo, značilno za določenega prodajalca, je mogoče na primer določiti v dvostranskih pogodbah, v skupinah uporabnikov ali v dopolnilih standarda IEC 61400-25 (vsi deli).

General Information

Status
Published
Publication Date
30-Nov-2017
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available
Due Date
01-Dec-2017
Completion Date
01-Dec-2017

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SLOVENSKI STANDARD
SIST EN 61400-25-1:2018
01-februar-2018
1DGRPHãþD
SIST EN 61400-25-1:2007

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Wind energy generation systems - Part 25-1: Communications for monitoring and control

of wind power plants - Overall description of principles and models (IEC 61400-25-

1:2017)
Ta slovenski standard je istoveten z: EN 61400-25-1:2017
ICS:
27.180 Vetrne elektrarne Wind turbine energy systems
SIST EN 61400-25-1:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61400-25-1:2018
---------------------- Page: 2 ----------------------
SIST EN 61400-25-1:2018
EUROPEAN STANDARD EN 61400-25-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2017
ICS 27.180 Supersedes EN 61400-25-1:2007
English Version
Wind energy generation systems -
Part 25-1: Communications for monitoring and control of wind
power plants - Overall description of principles and models
(IEC 61400-25-1:2017)

Systèmes de génération d'énergie éolienne - Windenergieanlagen - Teil 25-1: Kommunikation für die

Partie 25-1: Communications pour la surveillance et la Überwachung und Steuerung von Windenergieanlagen -

commande des centrales éoliennes - Description globale Einführende Beschreibung der Prinzipien und Modelle

des principes et des modèles (IEC 61400-25-1:2017)
(IEC 61400-25-1:2017)

This European Standard was approved by CENELEC on 2017-08-24. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 61400-25-1:2017 E
---------------------- Page: 3 ----------------------
SIST EN 61400-25-1:2018
EN 61400-25-1:2017
European foreword

The text of document 88/587/CDV, future edition 2 of IEC 61400-25-1, prepared by IEC/TC 88 "Wind

energy generation systems" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN 61400-25-1:2017.
The following dates are fixed:
(dop) 2018-06-01
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-12-01
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61400-25-1:2007.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 61400-25-1:2017 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 61850 Series NOTE Harmonized as EN 61850 Series.
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SIST EN 61400-25-1:2018
EN 61400-25-1:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
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 61400-25-2 2015 Wind turbines - EN 61400-25-2 2015
Part 25-2: Communications for monitoring
and control of wind power plants -
Information models
IEC 61400-25-3 2015 Wind turbines - EN 61400-25-3 2015
Part 25-3: Communications for monitoring
and control of wind power plants -
Information exchange models
IEC 61400-25-4 - Wind energy generation systems - EN 61400-25-4 -
Part 25-4: Communications for monitoring
and control of wind power plants - Mapping
to communication profile
IEC 61400-25-6 - Wind energy generation systems - EN 61400-25-6 -
Part 25-6: Communications for monitoring
and control of wind power plants - Logical
node classes and data classes for
condition monitoring
IEC 61850-7-1 2011 Communication networks and systems for EN 61850-7-1 2011
power utility automation -
Part 7-1: Basic communication structure -
Principles and models
IEC 61850-7-2 2010 Communication networks and systems for EN 61850-7-2 2010
power utility automation -
Part 7-2: Basic information and
communication structure - Abstract
communication service interface (ACSI)
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SIST EN 61400-25-1:2018
---------------------- Page: 6 ----------------------
SIST EN 61400-25-1:2018
IEC 61400-25-1
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wind energy generation systems –
Part 25-1: Communications for monitoring and control of wind power plants –
Overall description of principles and models
Systèmes de génération d’énergie éolienne –
Partie 25-1: Communications pour la surveillance et la commande des centrales
éoliennes – Description globale des principes et des modèles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.180 ISBN 978-2-8322-4363-3

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 61400-25-1:2018
– 2 – IEC 61400-25-1:2017 © IEC 2017
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 9

2 Normative references .................................................................................................... 10

3 Terms and definitions .................................................................................................... 11

4 Abbreviated terms ......................................................................................................... 15

5 Overall description of IEC 61400-25 (all parts)............................................................... 16

5.1 General ................................................................................................................. 16

5.2 Top-down view on wind power plants .................................................................... 16

5.2.1 Definition of wind power plants ...................................................................... 16

5.2.2 Wind power plant components ....................................................................... 16

5.3 Generic requirements on communication .............................................................. 18

5.3.1 Communication capability .............................................................................. 18

5.3.2 Communication content ................................................................................. 18

5.3.3 Communication functions ............................................................................... 19

5.4 Communication model of IEC 61400-25 (all parts) ................................................ 20

5.4.1 General ......................................................................................................... 20

5.4.2 Information model .......................................................................................... 20

5.4.3 Information exchange model and relation to wind power plant

information models ........................................................................................ 22

5.4.4 Mapping to communication profile .................................................................. 23

6 Wind power plant information model .............................................................................. 23

6.1 General ................................................................................................................. 23

6.2 Information modelling methodology ....................................................................... 23

6.2.1 Wind power plant information ......................................................................... 23

6.2.2 Modelling approach ....................................................................................... 24

6.2.3 Logical devices .............................................................................................. 26

6.2.4 Logical nodes ................................................................................................ 26

7 Wind power plant information exchange model .............................................................. 27

7.1 General ................................................................................................................. 27

7.2 Information exchange modelling methodology ....................................................... 27

7.2.1 Wind power plant information exchange ......................................................... 27

7.2.2 Service models .............................................................................................. 28

7.2.3 Abstract communication service interface ...................................................... 29

7.2.4 Service modelling convention ........................................................................ 31

8 Mapping to communication protocols ............................................................................. 34

8.1 General ................................................................................................................. 34

8.2 Architecture of the mappings................................................................................. 34

8.3 Mapping of the wind power plant information model .............................................. 35

Bibliography .......................................................................................................................... 36

Figure 1 – Conceptual communication model of the IEC 61400-25 series ............................ 10

Figure 2 – Data processing by the server (conceptual) .......................................................... 21

Figure 3 – Modelling approach (conceptual) .......................................................................... 22

Figure 4 – Structure of wind power plant information model .................................................. 25

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SIST EN 61400-25-1:2018
IEC 61400-25-1:2017 © IEC 2017 – 3 –

Figure 5 – Role of common data classes (CDC) in WPP information model .......................... 25

Figure 6 – Client and server role ........................................................................................... 28

Figure 7 – IEM service models .............................................................................................. 28

Figure 8 – Conceptual information exchange model for a wind power plant .......................... 30

Figure 9 – IEM service model with examples ......................................................................... 32

Figure 10 – Sequence diagram ............................................................................................. 33

Figure 11 – ACSI mapping to communication stacks/profiles ................................................. 34

Figure 12 – Communication profiles ...................................................................................... 35

Table 1 – Operational functions ............................................................................................ 19

Table 2 – Management functions .......................................................................................... 20

Table 3 – Wind power plant information categories ............................................................... 24

Table 4 – General table structure of a logical node (LN) ....................................................... 26

Table 5 – Data class attributes in a logical node ................................................................... 27

Table 6 – Service table ......................................................................................................... 32

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SIST EN 61400-25-1:2018
– 4 – IEC 61400-25-1:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WIND ENERGY GENERATION SYSTEMS –
Part 25-1: Communications for monitoring and control of
wind power plants – Overall description of principles and 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

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 61400-25-1 has been prepared by IEC technical committee 88:

Wind energy generation systems.

This second edition cancels and replaces the first edition published in 2006. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) general harmonization of text and overview models with the other parts of the
IEC 61400-25 series,
b) harmonization of definitions in other related standards.
---------------------- Page: 10 ----------------------
SIST EN 61400-25-1:2018
IEC 61400-25-1:2017 © IEC 2017 – 5 –
The text of this International Standard is based on the following documents:
CDV Report on voting
88/587/CDV 88/622/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.

The title of TC 88 was changed in 2015 from Wind turbines to Wind energy generation

systems.

A list of all parts in the IEC 61400 series, published under the general titles Wind turbines and

Wind energy generation systems can be found on the IEC website.

The users of IEC 61400-25 have formed a community, USE61400-25. For further information

see http://www.use61400-25.com.

Attached to the release of the IEC 61400-25 standard series and in addition to the standard

IEC maintenance process, a specific maintenance process is set up to handle technical

issues raised after publication. Here are the main principles:

• Technical issues (called TISSUES) are collected from the release of the new document in

cooperation with the user group for the IEC 61400-25 standard series USE61400-25.

• The collected TISSUES can be categorized in two groups:

– TISSUES that can threaten interoperability between implementations of the standard

and that need either corrections or clarifications (“IntOp” TISSUES),

– TISSUES that propose new features that will be implemented in future versions of the

standard (“next edition” TISSUES).

• IntOp TISSUES require immediate clarification and are following a transparent fixing

process handled by the user group for the IEC 61400-25 standard series together with the

editors of the IEC 61400-25 standard series.

• The detailed specification of this process, the list of TISSUES, associated fix, their status

and impact on implementation and certification are accessible through the USE61400-25

web site http://www.use61400-25.com.

• IEC recommends implementing the proposed fixes to IntOp TISSUES, as soon as they

have reached the “green” status. The list of TISSUES which are implemented in an

intelligent electronic device (IED) should be transparently stated by its manufacturer.

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SIST EN 61400-25-1:2018
– 6 – IEC 61400-25-1:2017 © IEC 2017

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 to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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SIST EN 61400-25-1:2018
IEC 61400-25-1:2017 © IEC 2017 – 7 –
INTRODUCTION

IEC 61400-25 (all parts) is intended for vendors (manufacturers, suppliers), operators,

owners, planners, and designers of wind power plants as well as system integrators and utility

companies operating in the wind energy market. IEC 61400-25 (all parts) is intended to be

accepted and to be used world-wide as the international standard for communications in the

domain of wind power plants.

IEC 61400-25 (all parts) has been developed in order to provide a uniform communications

basis for the monitoring and control of wind power plants. It defines wind power plant specific

information, the mechanisms for information exchange and the mapping to communication

protocols. In this regard, IEC 61400-25 (all parts) defines details required to exchange the

available information with wind power plant components in a manufacturer-independent

environment. This is done by definitions made in this part of IEC 61400-25 or by reference to

other standards.

The wind power plant specific information describes the crucial and common process and

configuration information. The information is hierarchically structured and covers for example

common information found in the rotor, generator, converter, grid connection and the like. The

information may be simple data (including timestamp and quality) and configuration values or

more comprehensive attributes and descriptive information, for example engineering unit,

scale, description, reference, statistical or historical information. All information of a wind

power plant defined in IEC 61400-25 (all parts) is name tagged. A concise meaning of each

data is given. The standardized wind power plant information can be extended by means of a

name space extension rule. All data, attributes and descriptive information can be exchanged

by corresponding services.

The implementation of IEC 61400-25 (all parts) allows SCADA systems (supervisory control

and data acquisition) to communicate with wind turbines from multiple vendors. The

standardized self-description (contained either in an XML file or retrieved online from a

device) can be used to configure SCADA applications. Standardization of SCADA applications

are excluded in IEC 61400-25 (all parts) but standardized common wind turbine information

provides means for re-use of applications and operator screens for wind turbines from

different vendors. From a utility perspective, unified definitions of common data minimize

conversion and re-calculation of data values for evaluation and comparison of all their wind

power plants.

IEC 61400-25 (all parts) can be applied to any wind power plant operation concept, i.e. both

individual wind turbines, clusters and more integrated groups of wind turbines. The application

area of IEC 61400-25 (all parts) covers components required for the operation of wind power

plants, i.e. not only the wind turbine generator, but also the meteorological system, the

electrical system, and the wind power plant management system. The wind power plant

specific information in IEC 61400-25 (all parts) excludes information associated with feeders

and substations. Substation communication is covered within IEC 61850 (all parts).

The intention of IEC 61400-25 (all parts) is to enable components from different vendors to

communicate with other components, at any location. Object-oriented data structures can

make the engineering and handling of large amounts of information provided by wind power

plants less time-consuming and more efficient. IEC 61400-25 (all parts) supports scalability,

connectivity, and interoperability.

IEC 61400-25 (all parts) is a basis for simplifying the contracting of the roles the wind turbine

and SCADA systems have to play. The crucial part of the wind power plant information, the

information exchange methods, and the communication stacks are standardized. They build a

basis to which procurement specifications and contracts could easily refer.
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SIST EN 61400-25-1:2018
– 8 – IEC 61400-25-1:2017 © IEC 2017
IEC 61400-25 is organized in several parts.

• IEC 61400-25-1 offers an introductory orientation, crucial requirements, and a modelling

guide.

• IEC 61400-25-2 and IEC61400-25-6 contain the description of the information model, a

uniform, component-oriented view of the wind power plant data, including extensions for

condition monitoring.

• IEC 61400-25-3 describes the information exchange model. It reflects the functionality of

the server.
• IEC 61400-25-4 presents five alternative mappings of the information model and

information exchange model to a standard communication profile. The choice depends on

the application and the functionality and performance needed.

• IEC 61400-25-5 describes test cases for conformance testing of implementations.

NOTE Performance of IEC 61400-25 (all parts) implementations are application specific. IEC 61400-25 (all parts)

does not guarantee a certain level of performance. This is beyond the scope of IEC 61400-25 (all parts). However,

there is no underlying limitation in the communications technology to prevent high speed application (millisecond

level responses).
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SIST EN 61400-25-1:2018
IEC 61400-25-1:2017 © IEC 2017 – 9 –
WIND ENERGY GENERATION SYSTEMS –
Part 25-1: Communications for monitoring and control of
wind power plants – Overall description of principles and models
1 Scope

The focus of IEC 61400-25 (all parts) 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 beyond the scope of
IEC 61400-25 (all parts).

IEC 61400-25 (all parts) 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. IEC 61400-25 (all parts) enables

connectivity between a heterogeneous combination of client and servers from different

manufacturers and suppliers.

As depicted in Figure 1, IEC 61400-25 (all parts) defines a server with the following aspects:

– information provided by a wind power plant component, for example, ‘wind turbine rotor

speed’ or ‘total power production of a certain time interval’ is modelled and made available

for access. The information modelled in IEC 61400-25 (all parts) is defined in
IEC 61400-25-2 and IEC 61400-25-6,

– services to exchange values of the modelled information defined in IEC 61400-25-3,

– mapping to a communication profile, providing a protocol stack to carry the exchanged

values from the modelled information (IEC 61400-25-4).

IEC 61400-25 (all parts) only defines how to model the information, information exchange and

mapping to specific communication protocols. IEC 61400-25 (all parts) excludes a definition of

how and where to implement the communication interface, the application program interface

and implementation recommendations. However, the objective of IEC 61400-25 (all parts) is

that the information associated with a single wind power plant component (such as a wind

turbine) is accessible th
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