SIST EN 61400-25-1:2007
Wind turbines -- Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and models
Wind turbines -- Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and 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 beyond 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, 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 the IEC 61400-25 series is defined in IEC 61400- 25-2. - 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). 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. IEC 61400-25-1 gives an overall description of the principles and models used in the IEC 61400-25 series of standards. NOTE The IEC 61400-25 series focuses on the common, non-vendor-specific information. Those information items that tend to vary greatly between vendor-specific implementations can for example be specified in bilateral agreements, in user groups, or in amendments to the IEC.
Windenergieanlagen - Teil 25-1: Kommunikation für die Überwachung und Steuerung von Windenergieanlagen - Einführende Beschreibung der Prinzipien und Modelle
Eoliennes - Partie 25-1 : Communications pour la surveillance et la commande des centrales éoliennes - Description générale des principes et modèles
Sistemi generatorjev vetrne turbine - 25-1. del: Komunikacije za spremljanje in nadzor vetrnih elektrarn - Celoten opis načel in modelov (IEC 61400-25-1:2006)
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wind turbines - Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and modelsEoliennes - Partie 25-1: Communications pour la surveillance et la commande des centrales éoliennes - Description générale des principes et modelesWindenergieanlagen - Teil 25-1: Kommunikation für die Überwachung und Steuerung von Windenergieanlagen - Einführende Beschreibung der Prinzipien und ModelleTa slovenski standard je istoveten z:EN 61400-25-1:2007SIST EN 61400-25-1:2007en,de27.180Sistemi turbin na veter in drugi alternativni viri energijeWind turbine systems and other alternative sources of energyICS:SLOVENSKI
STANDARDSIST EN 61400-25-1:200701-november-2007
EUROPEAN STANDARD EN 61400-25-1 NORME EUROPÉENNE
EUROPÄISCHE NORM February 2007
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 61400-25-1:2007 E
ICS 27.180
English version
Wind turbines -
Part 25-1: Communications for monitoring
and control of wind power plants -
Overall description of principles and models (IEC 61400-25-1:2006)
Eoliennes -
Partie 25-1: Communications
pour la surveillance et la commande
des centrales éoliennes - Description générale
des principes et modèles (CEI 61400-25-1:2006)
Windenergieanlagen -
Teil 25-1: Kommunikation
für die Überwachung und Steuerung
von Windenergieanlagen -
Einführende Beschreibung
der Prinzipien und Modelle (IEC 61400-25-1:2006)
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.
EN 61400-25-1:2007 - 2 -
Foreword The text of document 88/274/FDIS, future edition 1 of IEC 61400-25-1, prepared by IEC TC 88, Wind turbines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61400-25-1 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 61400-25-1:2006 was approved by CENELEC as a European Standard without any modification. __________
- 3 - EN 61400-25-1:2007
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 61400-12-1 -1) Wind turbines -
Part 12-1: Power performance measurements of electricity producing wind turbines EN 61400-12-1 20062)
IEC 61400-25 Series Wind turbines -
Part 25: Communications for monitoring and control of wind power plants EN 61400-25 Series
IEC 61850-7-1 2003 Communication networks and systems in substations -
Part 7-1: Basic communication structure for substation and feeder equipment - Principles and models EN 61850-7-1 2003
IEC 61850-7-2 2003 Communication networks and systems in substations -
Part 7-2: Basic communication structure for substation and feeder equipment - Abstract communication service interface (ACSI) EN 61850-7-2 2003
IEC 61850-7-3 2003 Communication networks and systems in substations -
Part 7-3: Basic communication structure for substation and feeder equipment - Common data classes EN 61850-7-3 2003
IEC 61850-7-4 2003 Communication networks and systems in substations -
Part 7-4: Basic communication structure for substation and feeder equipment - Compatible logical node classes and data classes EN 61850-7-4 2003
IEC 61850-8-1 2004 Communication networks and systems in substations -
Part 8-1: Specific Communication Service Mapping (SCSM) - Mappings to MMS (ISO 9506-1 and ISO 9506-2) and
to ISO/IEC 8802-3 EN 61850-8-1 2004
1) Undated reference. 2) Valid edition at date of issue.
EN 61400-25-1:2007 - 4 -
Publication Year Title EN/HD Year ISO/IEC 7498-1 1994 Information technology - Open systems interconnection - Basic reference model: The basic model EN ISO/IEC 7498-11995
INTERNATIONAL STANDARD IEC61400-25-1 First edition2006-12 Wind turbines – Part 25-1: Communications for monitoring
and control of wind power plants – Overall description of principles and 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, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch V For price, see current cataloguePRICE CODE
Commission Electrotechnique InternationaleInternational Electrotechnical Commission
– 2 – 61400-25-1 © IEC:2006(E) CONTENTS FOREWORD.3 INTRODUCTION.5
1 Scope.7 2 Normative references.8 3 Terms and definitions.9 4 Abbreviated terms.13 5 Overall description of the IEC 61400-25 series.13 5.1 General.13 5.2 Top-down view on wind power plants.14 5.3 Generic requirements on communication.15 5.4 Communication model of the IEC 61400-25 series.17 6 Wind power plant information model.20 6.1 General.20 6.2 Information modelling methodology.20 7 Wind power plant information exchange model.24 7.1 General.24 7.2 Information exchange modelling methodology.24 8 Mapping to communication protocols.30 8.1 General.30 8.2 Architecture of the mappings.31 8.3 Mapping of the wind power plant information model.31
Figure 1 – Conceptual communication model of the IEC 61400-25 series.8 Figure 2 – Data processing by the server (conceptual).18 Figure 3 – Modelling approach (conceptual).19 Figure 4 – Structure of wind power plant information model.22 Figure 5 – Client and server role.24 Figure 6 – IEM Service models.25 Figure 7 – Conceptual information exchange model for a wind power plant.26 Figure 8 – IEM service model with examples.28 Figure 9 – Sequence diagram.29 Figure 10 – ACSI mapping to communication stacks/profiles.30 Figure 11 – Communication profiles.31
Table 1 – Operational functions.16 Table 2 – Management functions.17 Table 3 – Wind power plant information categories.21 Table 4 – General table structure of a logical node (LN).23 Table 5 – Data class attributes in a logical node.23 Table 6 – Service table.28
61400-25-1 © IEC:2006(E) – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
WIND TURBINES –
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 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 61400-25-1 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 88/274/FDIS 88/280/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.
– 4 – 61400-25-1 © IEC:2006(E)
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.
61400-25-1 © IEC:2006(E) – 5 – INTRODUCTION The IEC 61400-25 series addresses 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. The IEC 61400-25 series is intended to be accepted and to be used world-wide as the international standard for communications in the domain of wind power plants. The IEC 61400-25 series 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, the IEC 61400-25 series 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 the IEC 61400-25 series 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 the IEC 61400-25 series is name tagged. A concise meaning of each data is given. The standardised 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 the IEC 61400-25 series allows SCADA systems (supervisory control and data acquisition) to communicate with wind turbines from multiple vendors. The standardised self-description (contained either in a XML file or retrieved online from a device) can be used to configure SCADA applications. Standardisation of SCADA applications are excluded in the IEC 61400-25 series but standardised 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 minimise conversion and re-calculation of data values for evaluation and comparison of all their wind power plants. The IEC 61400-25 series 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 the IEC 61400-25 series 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 the IEC 61400-25 series excludes information associated with feeders and substations. Substation communication is covered within the IEC 61850 series of standards. The intention of the IEC 61400-25 series 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. The IEC 61400-25 series supports scalability, connectivity, and interoperability. The IEC 61400-25 series 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 standardised. They build a basis to which procurement specifications and contracts could easily refer. The IEC 61400-25 series is organised in several parts. IEC 61400-25-1 offers an introductory orientation, crucial requirements, and a modelling guide.
– 6 – 61400-25-1 © IEC:2006(E) NOTE 1 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). NOTE 2 IEC 61400-25-4 is, at the time of the publication of IEC 61400-25-1 (this part), still to be published. With IEC 61400-25-4 the mapping of the information and information exchange models to a specific communication profile will be described/defined in detail. IEC 61400-25-4 may consist of more than one normative mapping but at least one of the optional mappings has to be selected in order to be in conformance with the IEC 61400-25 series. IEC 61400-25-4 is expected to include the following mappings: Webservices IEC 61850-8-1 MMS OPC XML DA IEC 60870-5-104 DNP3 Each of the different mappings specifies individually which and how information models (IEC 61400-25-2) and information exchange models (IEC 61400-25-3) will be supported. The mapping will only reflect the information model and the information exchange services given in IEC 61400-25-2 and IEC 61400-25-3. The individual selected mapping will as a minimum support the mandatory data and data attributes, and the associated services. A specific mapping may, for implementation reasons or due to underlying properties of the communication protocol used, need to extend and clarify individual information or individual services in IEC 61400-25-2 and
IEC 61400-25-3. IEC 61400-25-4 will in this sense have the highest priority of the ranking order in regards of implementation.
61400-25-1 © IEC:2006(E) – 7 –
WIND TURBINES –
Part 25-1: Communications for monitoring
and control of wind power plants – Overall description of principles and 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 beyond 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, 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 the IEC 61400-25 series is defined in IEC 61400-25-2. – 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). 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. IEC 61400-25-1 gives an overall description of the principles and models used in the
IEC 61400-25 series of standards. NOTE The IEC 61400-25 series focuses on the common, non-vendor-specific information. Those information items that tend to vary greatly between vendor-specific implementations can for example be specified in bilateral agreements, in user groups, or in amendments to the IEC 61400-25 series.
– 8 – 61400-25-1 © IEC:2006(E) Communication model of the IEC 61400-25 seriesClientServerInformation exchangemodel (get, set, report, log, control, publish / subscribe, etc.)defined in IEC 61400-25-3Information exchangemodel (get, set, report, log, control, publish / subscribe, etc.)defined in IEC 61400-25-3Wind power plant information model (rotor speed, break status, total power production, etc.)defined in IEC 61400-25-2Wind power plant information model (rotor speed, break status, total power production, etc.)defined in IEC 61400-25-2Wind power plant componente.g. wind turbineApplicationApplicationActore.g.SCADAMessaging through mapping to communication profile (Read, write, . message)defined inIEC 61400-25-4Messaging through mapping to communication profile (Read, write, . message)defined inIEC 61400-25-4Information exchangemodel (get, set, report, log, control, publish / subscribe, etc.)defined in IEC 61400-25-3Information exchangemodel (get, set, report, log, control, publish / subscribe, etc.)defined in IEC 61400-25-3Wind power plant information modeldefined in IEC 61400-25-2Wind power plant information modeldefined in IEC 61400-25-2Outside scopeOutside scope 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 document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61400-12-1, Wind turbines – Part 12-1: Power performance measurements of electricity producing wind turbines IEC 61400-25 (all parts), Wind turbines – Part 25: Communications for monitoring and control of wind power plants IEC 61850-7-1:2003, Communication networks and systems in substations – Part 7-1: Basic communication structure for substation and feeder equipment – Principles and models IEC 61850-7-2:2003, Communication networks and systems in substations – Part 7-2: Basic communication structure for substation and feeder equipment – Abstract communication service interface (ACSI) IEC 61850-7-3:2003, Communication networks and systems in substations – Part 7-3: Basic communication structure for substation and feeder equipment – Common data classes IEC 61850-7-4:2003, Communication networks and systems in substations – Part 7-4: Basic communication structure for substation and feeder equipment – Compatible logical node classes and data classes
IEC 61850-8-1:2004, Communication networks and systems in substations – Part 8-1: Specific Communication Service Mapping (SCSM) – Mappings to MMS (ISO 9506-1 and ISO 9506-2) and to ISO/IEC 8802-3 ISO 7498-1:1994, Information technology – Open Systems Interconnection – Basic Reference Model: The Basic Model IEC
2143/06
61400-25-1 © IEC:2006(E) – 9 – 3 Terms and definitions For the purpose 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 wind power plant state information. Statement of safety intervention by the wind turbine control system (i.e. on/off) 3.3
characteristic values properties of analogue information (min, max, avg, dev, etc.) 3.4
command controllable data for system behaviour (enable/disable, active/deactivate, etc.) 3.5
communication function used by an actor to configure, perform and monitor the information exchange with wind power plants, for example operational and management function 3.6
control operational function used for changing and modifying, intervening, switching, controlling, parameterisation and optimising of wind power plants 3.7
counting value total number of occurrences of a specific event 3.8
data retrieval operational function used for collecting of wind power plant data 3.9
diagnostics management function used to set up and provide for self-monitoring of the communication system 3.10
electrical system component of a wind power plant responsible for collecting and transmitting the energy produced in wind turbines 3.11
event state transition (status, alarm, command)
– 10 – 61400-25-1 © IEC:2006(E) 3.12
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.
3.13
information content of communication. The basic element is raw data from the wind power plant component, which shall be processed into specified information according to the IEC 61400-25 series. Wind power plant information categories: source information (analogue and state information), derived information (statistical and historical information). Information is defined as data (usually processed and derived data, and information describing other data) 3.14
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 3.15
information model knowledge concerning functions and devices in which the functions are implemented NOTE This knowledge is made visible and accessible through the means of the IEC 61400-25 series. The model describes in an abstract way a communication oriented representation of a real function or device. 3.16
log wind power plant historical information. Chronological list of source informat
...
SLOVENSKI oSIST prEN 61400-25-1:2005
PREDSTANDARD
november 2005
Sistemi generatorjev vetrne turbine – 25-1. del: Komunikacije za spremljanje
in nadzor vetrnih elektrarn – Celoten opis načel in modelov
Wind turbines – Part 25-1: Communications for monitoring and control of wind
power plants – Overall description of principles and models
ICS 27.180; 35.240.50 Referenčna številka
oSIST prEN 61400-25-1:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
---------------------- Page: 1 ----------------------
88/238/CDV
COMMITTEE DRAFT (CD)
Project number
IEC/TC or SC:
IEC 61400-25-1 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 88/213/CD & 88/233/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 25-1: Communications for monitoring and control of wind power plants -
Overall description of principles and 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 second
CD (88/213/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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7 Overall description of principles and models
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61400-25-1 Ed.1/CDV © IEC:2005
1
2 CONTENTS
3 FOREWORD.5
4 INTRODUCTION.6
5 1 Scope .8
6 2 Normative references .10
7 3 Terms and definitions .11
8 4 Abbreviated terms .16
9 5 Overall description of IEC 61400-25.17
10 5.1 General .17
11 5.2 Top-down view on wind power plants .17
12 5.2.1 Definition of wind power plants.17
13 5.2.2 Wind power plant components.17
14 5.3 Requirements on communication .18
15 5.3.1 Communication capability.18
16 5.3.2 Communication content.19
17 5.3.3 Communication functions .19
18 5.4 Communication model of IEC 61400-25.20
19 5.4.1 Introduction.20
20 5.4.2 Wind power plant information model .21
21 5.4.3 Information exchange model and relation to wind power plant
22 information models.22
23 5.4.4 Mapping to communication profile .23
24 6 Wind power plant information model.24
25 6.1 General .24
26 6.2 Information modelling methodology .24
27 6.2.1 Wind power plant information .24
28 6.2.2 Modelling approach.25
29 6.2.3 Logical devices .26
30 6.2.4 Logical nodes .26
31 7 Information exchange model .28
32 7.1 General .28
33 7.2 Modelling of information exchange .28
34 7.2.1 Client-server information exchange .28
35 7.2.2 Service models .29
36 7.2.3 Abstract Communication Service Interface.29
37 7.2.4 Service modelling convention .31
38 8 Specific mappings to communication protocols.34
39 8.1 Introduction .34
40 8.2 Architecture of the mappings.35
41 8.3 Mapping of the wind power plant information model.35
42
43 Figure 1 – Conceptual communication model of IEC 61400-25.9
44 Figure 2 – Data processing by the server (conceptual).21
45 Figure 3 – Modelling approach (conceptual) .22
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1 Figure 4 – Structure of wind power plant information model .26
2 Figure 5 – Client and server role .28
3 Figure 6 – IEM Service models.29
4 Figure 7 – Server (conceptual) .30
5 Figure 8 – Conceptual IEM.32
6 Figure 9 – Sequence diagram .33
7 Figure 10 – ACSI mapping to communication stacks/profiles.34
8 Figure 11 – Communication profiles .35
9
10 Table 1 – Operational functions.20
11 Table 2 – Management functions.20
12 Table 3 – Wind power plant information categories .25
13 Table 4 – General table structure of a logical node (LN) .27
14 Table 5 – Data class attributes in a logical node .27
15
16
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1
2 INTERNATIONAL ELECTROTECHNICAL COMMISSION
3 ____________
4
5 WIND TURBINES –
6
7 Part 25-1:
8 Communications for monitoring and control of wind power plants –
9 Overall description of principles and 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 has been prepared
39 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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61400-25-1 Ed.1/CDV © IEC:2005
1 INTRODUCTION
2 This document addresses vendors (manufacturers, suppliers), operators, owners, planners,
3 and designers of wind power plants as well as system integrators and utility companies oper-
4 ating in the wind energy market. IEC 61400-25 is intended to be accepted and to be used
5 world-wide as the international standard for communications in the domain of wind power
6 plants.
7 IEC 61400-25 has been developed in order to provide a uniform communications basis for the
8 monitoring and control of wind power plants. It defines wind power plant specific information,
9 the mechanisms for information exchange, the mapping to communication protocols, and the
10 system configuration. In this regard the standard defines all details required to connect wind
11 power plant components in a multi-vendor environment and to exchange the information made
12 available by a component. This is done by definitions made in this document or by reference
13 to other commonly used standards.
14 The wind power plant specific information describes the crucial and common process data,
15 meta-data (data about data, e. g. scale factor or engineering unit), and configuration data of a
16 wind power plant. Process information is hierarchically structured and covers for example
17 common process information found in the rotor, generator, converter, grid connection and the
18 like. The data may be simple (value, timestamp, and quality) or more comprehensive (adding
19 more meta-data, for example engineering unit, scale, description, short hand reference, statis-
20 tical and historical information of the process value). All information of a wind power plant de-
21 fined in this standard is name tagged – it defines a comprehensive name space. A concise
22 meaning of each signal is given. The standardised wind power plant information can be easily
23 extended by means of a name space extension rule.
24 All process and meta-data can be exchanged by corresponding services. Access to the meta-
25 data (including configuration information with regard to the wind power plant information
26 model and services and communication stacks) provides the so-called self-description of a
27 device.
28 This standard allows SCADA systems (supervisory control and data acquisition) to communi-
29 cate with wind turbine controllers from multiple vendors. The standardised self-description
30 (contained either in a XML file or retrieved online from a device) can be used to configure
31 SCADA applications. Standardisation of SCADA applications are excluded in IEC 61400-25
32 but standardised common wind turbine information provides means for re-use of applications
33 and operator screens for wind turbines from different vendors. From a utility perspective uni-
34 fied definitions of common data minimise conversion and re-calculation of data values for
35 evaluation and comparison of all their wind power plants.
36 The standard can be applied to any wind power plant operation concept, i.e., both in individ-
37 ual and integrated operations. The application area of IEC 61400-25 covers all components
38 required for the operation of wind power plants, i.e., not only the wind turbine, but also the
39 meteorological system (reference wind mast), the electrical system, and the wind power plant
40 management system. The wind power plant specific information in IEC 61400-25 excludes in-
41 formation associated with feeders and substations. Substation communication is covered
42 within the IEC 61850 series of standards.
43 IEC 61400-25 puts an end to the communication difficulties arising from the wide variety of
44 protocols, labels, semantics etc. thus offering the possibility to manage different wind power
45 plants independently of the vendor. It enables components from different vendors to easily
46 communicate with other components, at any location, at any time. Object-oriented data struc-
47 tures make the engineering and handling of huge amounts of information provided by wind
48 power plants less time-consuming and more efficient. Scalability, connectivity, and interop-
49 erability can be maximised to reduce cost and needed man power.
50 This standard is a basis for simplifying the contracting of the roles the wind turbine and
51 SCADA systems have to play. The crucial part of the wind power plant information, the infor-
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1 mation exchange methods, and the communication stacks are standardised. They build a ba-
2 sis to which procurement specifications and contracts could easily refer.
3 The standard IEC 61400-25 is organised in several parts. Part IEC 61400-25-1 offers an in-
4 troductory orientation, crucial requirements, and a modelling guide.
5 INTERIMS NOTE (for 1CDV review only): An XML file will be provided for the final version of the information mod-
6 els.
7 NOTE 1 Performance of IEC 61400-25 implementations are application specific. The standard does not guarantee
8 a certain level of performance. That’s out of the scope. However there is no underlying limitation in the communica-
9 tions technology to prevent high speed application (millisecond level responses).
10 NOTE 2 The standard IEC 61400-25 has a close relation with other IEC projects like IEC 61850 Addendum 1
11 (Communication networks and systems in substations - Power Quality Monitoring), IEC 62350 (Communications
12 Systems for Distributed Energy Resources (DER)), and IEC 62344 (Hydroelectric power plants – Communication
13 for monitoring and control).
14
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1
2 WIND TURBINES –
3
4 Part 25-1:
5 Communications for monitoring and control of wind power plants –
6 Overall description of principles and 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
38 NOTE 1 IEC 61400-25 focuses on the common, non-vendor-specific information. Those information items
39 that tend to vary greatly between vendor-specific implementations can for example be specified in bilateral agree-
40 ments, in user groups, or in amendments to this standard.
41 NOTE 2 IEC 61400-25 excludes definition of an application program interface and implementation rec-
42 ommendations.
43
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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 / profile (Read, log, control, publish /
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 61400-25-4 IEC 61400-25-3
plant
IEC 61400-25-4
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
(roto speed, break
defined in (roto speed, break
defined in
status, total power
status, total power
IEC 61400-25-2
Application Application
IEC 61400-25-2 production, …)
production, …)
defined in
defined in
IEC 61400-25-2
IEC 61400-25-2
Outside
Outside
scope
scope
1
2 Figure 1 – Conceptual communication model of IEC 61400-25
3
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61400-25-1 Ed.1/CDV © IEC:2005
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 ISO/IEC 7498-1:1994, Information technology – Open Systems Interconnection – Basic Ref-
6 erence Model: The Basic Model
7 IEC 61850-7-1:2003, Communication networks and systems in substations – Part 7-1: Basic
8 communication structure for substations and feeder equipment – Principles and models
9 IEC 61850-7-2:2003, Communication networks and systems in substations – Part 7-2: Basic
10 communication structure for substation and feeder equipment – Abstract communication ser-
11 vice interface (ACSI)
12 IEC 61850-7-3:2003, Communication networks and systems in substations – Part 7-3: Basic
13 communication structure for substation and feeder equipment – Common data classes
14 IEC 61850-7-4:2003, Communication networks and systems in substations – Part 7-4: Basic
15 communication structure for substation and feeder equipment – Compatible logical node
16 classes and data classes
17 IEC 61850-8-1:2004, Communication networks and systems in substations – Part 8-1: Spe-
18 cific communication service mapping (SCSM) – Mappings to MMS (ISO/IEC 9506-1 and
19 ISO/IEC 9506-2) and to ISO/IEC 8802-3
20
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1 3 Terms and definitions
2 For the purpose of this document, the following 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 characteristic values
15 wind power plant statistical information. Signal properties of analogue information (min, max,
16 avg, dev, etc.).
17 3.4
18 command
19 controllable data for system behaviour (enable/disable, enumeration).
20 3.5
21 communication function
22 used by an actor to configure, perform and monitor the information exchange with wind power
23 plants, e.g. operational and management function.
24 3.6
25 control
26 operational function used for changing and modifying, intervening, switching, controlling, pa-
27 rameterisation and optimising of wind power plants.
28 3.7
29 counting value
30 wind power plant statistical information. Total number of occurrences of a specific event.
31 3.8
32 data retrieval
33 Operational function used for archiving, exporting and restoring of wind power plant data.
34 3.9
35 diagnostics
36 management function used to set up and provide for self-monitoring of wind power plant com-
37 ponents.
38 3.10
39 electrical system
40 component of a wind power plant responsible for collecting and transmitting the energy pro-
41 duced in wind turbines.
42 3.11
43 event
44 wind power plant state information. State transition (status, alarm, command).
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1 3.12
2 function
3 a function is a task that is performed in the control centre or the wind power plant. Generally,
4 a function consists of sub functions that exchange data with each other. Depending on the
5 function definition, functions themselves exchange data with other functions.
6 3.13
7 IED
8 Intelligent Electronic Device - e.g. wind turbine controller. An IED may have connections as a
9 client, or as a server, or both, with other IED. An IED is, therefore, any device incorporating
10 one or more processors, with the capability to receive data from an external sender or to send
11 data to an external receiver.
12 3.14
13 information
14 content of communication. The material basis is raw data, which must be processed into rele-
15 vant information. Wind power plant information categories: source information (analogue and
16 state information), derived information (statistical and historical information).Information is de-
17 fined as data (usually processed and derived data, and meta-data describing other data).
18 3.15
19 information exchange
20 communication process between two systems, such as wind power component and actor, with
21 the goal to provide and to get relevant information. Requires specific communication functions
22 (services).
23 3.16
24 log
25 wind power plant historical information. Chronological list of source information for a period of
26 time.
27 3.17
28 logging and reporting
29 operational function used for analysing, reporting and evaluating of wind power plants.
30 3.18
31 management function
32 required for the higher-level administration of the information exchange. Used by certain ac-
33 tors to define general rules for the monitoring and control of wind power plants and to monitor
34 their compliance. Types are, e.g., user/access management, time synchronisation, diagnos-
35 tics, setup.
36 3.19
37 mandatory
38 information shall be provided by an implementation of this standard.
39 3.20
40 measured value
41 wind power plant analogue information. Sampled value of a process quantity.
42 3.21
43 meta-data
44 information that specifies data and ensures unambiguous interpretation of information. In-
45 cludes information regarding e.g. the source, the type and the accuracy of the primary data
46 exchanged as well as the time, the type of data and the data descriptor.
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1 3.22
2 meteorological system
3 component of a wind power plant responsible for th
...
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