SIST EN 61400-25-5:2007
Wind turbines -- Part 25-5: Communications for monitoring and control of wind power plants - Conformance testing
Wind turbines -- Part 25-5: Communications for monitoring and control of wind power plants - Conformance testing
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 standard is defined in part 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 the wind turbine) is accessible through a corresponding logical device. This part of IEC 61400-25 specifies standard techniques for testing of conformance of implementations, as well as specific measurement techniques to be applied when declaring performance parameters. The use of these techniques will enhance the ability of users to purchase systems that integrate easily, operate correctly, and support the applications as intended.
Windenergieanlagen - Teil 25-5: Kommunikation für die Überwachung und Steuerung von Windenergieanlagen - Konformitätsprüfungen
Eoliennes - Partie 25-5 : Communications pour la surveillance et la commande des centrales éoliennes - Essais de conformité
Sistemi generatorjev vetrne turbine - 25-5. del: Komunikacije za spremljanje in nadzor vetrnih elektrarn - Preskušanje skladnosti (IEC 61400-25-5:2006)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wind turbines - Part 25-5: Communications for monitoring and control of wind power plants - Conformance testingSistemi generatorjev vetrne turbine - 25-5. del: Komunikacije za spremljanje in nadzor vetrnih elektrarn - Preskušanje skladnosti (IEC 61400-25-5:2006)Eoliennes - Partie 25-5: Communications pour la surveillance et la commande des centrales éoliennes - Essais de conformitéWindenergieanlagen - Teil 25-5: Kommunikation für die Überwachung und Steuerung von Windenergieanlagen - KonformitätsprüfungenTa slovenski standard je istoveten z:EN 61400-25-5:2007SIST EN 61400-25-5:2007en,de27.180Sistemi turbin na veter in drugi alternativni viri energijeWind turbine systems and other alternative sources of energyICS:SLOVENSKI
STANDARDSIST EN 61400-25-5:200701-november-2007
EUROPEAN STANDARD EN 61400-25-5 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 61400-25-5:2007 E
ICS 27.180
English version
Wind turbines -
Part 25-5: Communications for monitoring
and control of wind power plants -
Conformance testing (IEC 61400-25-5:2006)
Eoliennes -
Partie 25-5: Communications
pour la surveillance et la commande
des centrales éoliennes - Essais de conformité (CEI 61400-25-5:2006)
Windenergieanlagen -
Teil 25-5: Kommunikation
für die Überwachung und Steuerung
von Windenergieanlagen -
Konformitätsprüfungen (IEC 61400-25-5:2006)
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 61400-25-5:2007
- 2 -
Foreword The text of document 88/277/FDIS, future edition 1 of IEC 61400-25-5, prepared by IEC TC 88, Wind turbines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61400-25-5 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 61400-25-5:2006 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61850-4 NOTE
Harmonized as EN 61850-4:2002 (not modified). IEC 61850-5 NOTE
Harmonized as EN 61850-5:2003 (not modified). IEC 61850-6 NOTE
Harmonized as EN 61850-6:2004 (not modified). IEC 61850-7-3 NOTE
Harmonized as EN 61850-7-3:2003 (not modified). IEC 61850-8-1 NOTE
Harmonized as EN 61850-8-1:2004 (not modified). __________
- 3 - EN 61400-25-5:2007 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 -
Part 25: Communications for monitoring and control of wind power plant 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 61850-7-4 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
ISO/IEC 9646 Series Information technology - Open Systems Interconnection - Conformance testing methodology and framewor EN ISO/IEC 9646 Series
INTERNATIONAL STANDARD IEC61400-25-5 First edition2006-12 Wind turbines – Part 25-5: Communications for monitoring
and control of wind power plants – Conformance testing © 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 X For price, see current cataloguePRICE CODE
Commission Electrotechnique InternationaleInternational Electrotechnical Commission
– 2 – 61400-25-5 © IEC:2006(E) CONTENTS FOREWORD.3 INTRODUCTION.5
1 Scope.6 2 Normative references.7 3 Terms and definitions.7 4 Abbreviated terms.10 5 Introduction to conformance testing.11 5.1 General.11 5.2 Conformance test procedures.11 5.3 Quality assurance and testing.12 5.4 Testing.13 5.5 Documentation of conformance test report.15 6 Device related conformance testing.15 6.1 General guidelines.15 6.2 Standard test procedures.17 6.3 Conformance test procedures.17 7 Performance tests.39 7.1 General.39 7.2 Communications latency.40 7.3 Time synchronisation and accuracy.41 7.4 Stability test.43
Annex A (informative)
Examples of test procedure template.44
Bibliography.45
Figure 1 – Conceptual communication model of the IEC 61400-25 series.7 Figure 2 – Conceptual conformance assessment process.14 Figure 3 – Conceptual test system architecture.16 Figure 4 – Test procedure format.18 Figure 5 – Performance testing (black box principle).41 Figure 6 – Time synchronisation and accuracy test setup.42
61400-25-5 © IEC:2006(E) – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
WIND TURBINES –
Part 25-5: Communications for monitoring
and control of wind power plants – Conformance testing
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 61400-25-5 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 88/277/FDIS 88/283/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 – 61400-25-5 © 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.
61400-25-5 © IEC:2006(E) – 5 – INTRODUCTION The IEC 61400-25 series defines communication 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 may be found in IEC 61400-25-41. This part of IEC 61400-25 defines the methods and abstract test cases for conformance testing of devices used in wind power plants. The intended readers are test system developers. NOTE 1 It is recommended to obtain a common knowledge of the standards IEC 61400-25-1, IEC 61400-25-2, IEC 61400-25-3, and IEC 61400-25-4 before reading this part. NOTE 2 Abbreviations used in IEC 61400-25-5 may be listed in Clause 3 or may be found in other parts of IEC 61400-25 that are relevant for conformance testing.
————————— 1 To be published.
– 6 – 61400-25-5 © IEC:2006(E) WIND TURBINES –
Part 25-5: Communications for monitoring
and control of wind power plants – Conformance testing
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 standard is defined in part 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 the wind turbine) is accessible through a corresponding logical device. This part of IEC 61400-25 specifies standard techniques for testing of conformance of implementations, as well as specific measurement techniques to be applied when declaring performance parameters. The use of these techniques will enhance the ability of users to purchase systems that integrate easily, operate correctly, and support the applications as intended. NOTE The role of the test facilities for conformance testing and certifying the results are outside of the scope of IEC 61400-25-5.
61400-25-5 © IEC:2006(E) – 7 – 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 61400-25 (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 substations and feeder equipment – Principles and models 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) IEC 61850-7-4:2003, Communication networks and systems in substations – Part 7-4: Basic communication structure for substations and feeder equipment – Compatible logical node and data classes ISO/IEC 9646 (all parts), Information technology – Open Systems Interconnection – Conformance testing methodology and framework 3 Terms and definitions For the purpose of this document, the terms and definitions defined in IEC 61400-25-1 and the following apply. 3.1
Factory Acceptance Test FAT customer agreed functional tests of the specifically manufactured substation automation system or its parts using the parameter set for the planned application.
IEC
2172/06
– 8 – 61400-25-5 © IEC:2006(E) The FAT shall be carried out in the factory of the manufacturer or other agreed-upon location by the use of process simulating test equipment 3.2
interoperability ability of two or more devices from the same vendor (or different vendors) to exchange information and use that information for correct co-operation. A set of values defined corresponds with the quantities or values of another set 3.3
Model Implementation Conformance Statement
MICS details the standard data object model elements supported by the system or device 3.4
negative test test to verify the correct response of a device or a system when subjected to: – IEC 61400-25 series conformant information and services which are not implemented in the device or system under test, – non IEC 61400-25 series conformant information and services sent to the device or system under test. 3.5
Protocol Implementation Conformance Statement PICS summary of the capabilities of the system to be tested 3.6
Protocol Implementation Extra Information For Testing PIXIT the Protocol Implementation eXtra Information for Testing document contains system specific information regarding the capabilities of the system to be tested and which are outside the scope of the IEC 61400-25 series NOTE The PIXIT is not subject to standardisation. 3.7
routine test performed by the manufacturer in order to ensure device operation and safety 3.8
Site Acceptance Test SAT verification of each data and control point and the correct functionality within the WPP and its operating environment at the whole installed plant by use of the final parameter set. The SAT is the precondition for the WPP being put into operation. 3.9
system test verification of correct behaviour of the WPP components and of the overall WPP under various application conditions NOTE The system test marks the final stage of the development of a WPP system component.
61400-25-5 © IEC:2006(E) – 9 – 3.10
test equipment all tools and instruments which simulate and verify the input/outputs of the operating environment of the WPP such as wind turbine, switchgear, transformers, network control centres or connected telecommunication units on the one side, and the communication links between the system components of the WPP on the other 3.11
test facility organisation able to provide appropriate test equipment and trained staff for conformance testing NOTE The management of conformance tests and the resulting information should follow a quality system. 3.12
type test verification of correct behaviour of the systems components of the WPP by use of the system tested software under the test conditions corresponding with the technical data
NOTE The type test marks the final stage of the hardware development and is the precondition for the start of the production. This test shall be carried out with system components which have been manufactured through the normal production cycle.
3.13
witness point point, defined in the appropriate document at which an inspection will take place on an activity. The activity may proceed without the approval of the initiator of the conformance test. The test facility provides a written notice to the initiator at an agreed time prior to the witness point. The initiator or his representative has the right, but is NOT obligated, to verify the witness point
– 10 – 61400-25-5 © IEC:2006(E) 4 Abbreviated terms ACSI Abstract Communication Service Interface BRCB Buffered Report Control Block DUT Device Under Test FAT Factory Acceptance Test GI General Interrogation HMI Human Machine Interface IED Intelligent Electronic Device IP Inter-networking protocol internet Protocol LCB Log Control Block LD Logical Device LN Logical Node MICS Model Implementation Conformance Statement PICS Protocol Implementation Conformance Statement PIXIT Protocol Implementation eXtra Information for Testing RCB Report Control Block RTU Remote Terminal Unit SAT Site Acceptance Test SCADA Supervisory Control And Data Acquisition SCSM Specific Communication Service Mapping SoE Sequence-of-Events SUT System Under Test TPAA Two Party Application Association
URCB Unbuffered Report Control Block UTC Coordinated Universal Time
WPP Wind Power Plant
61400-25-5 © IEC:2006(E) – 11 – 5 Introduction to conformance testing 5.1 General There are many steps involved from the development and production of a device to the proper running of a complete system designed according the specific needs of a customer. Suitable test steps are incorporated in this process. Many internal tests during the development of a device (or a system kit) result in a type test (unit level test) performed at least by the provider and – if required by applicable standards – by an independent test authority. In the context of this part of the IEC 61400-25 series, the term type test is restricted to the functional behaviour of the device excluding communication. Continuing routine tests in the production chain are necessary to ensure a constant quality of delivered devices in accordance with the quality procedures of the producer.
A conformance test is the type test for communication and – since communication establishes a system – the basic integrated systems test of the incorporated system components. As a global communications standard, the IEC 61400-25 series includes standardised conformance tests to insure that all suppliers comply with applicable requirements. Type tests and conformance tests do not completely guarantee that all functional and performance requirements are met. However, when properly performed, such tests significantly reduce the risk of costly problems occurring during system integration in the factory and on-site.
Conformance testing does not replace project specific system tests such as the FAT and SAT. The FAT and SAT are based on customer requirements for a dedicated WPP system and are done by the system integrator and normally witnessed by the customer. These tests increase the confidence level that all potential problems in the system have been identified and solved. These tests establish that the delivered WPP system is performing as specified. 5.2 Conformance test procedures In general, conformance testing of the communication behaviour of a system component should address the functional requirements and performance requirements of typical applications supported by these devices in a WPP.
Conformance testing demonstrates the capability of the Device Under Test (DUT) to operate with other system components in a specified way according to the IEC 61400-25 series.
Conformance testing requires consideration of the following issues: – The problem of all testing is the completeness of the tests. The number of all possible situations can be very large. It may be possible to cover all normal operating cases, but this may not be true for all failure cases. – It is impossible to test all system configurations using system components from different world-wide suppliers. Therefore, standardised test architecture with device simulators should be used. The use of such test architecture implies agreement about its configuration and the test procedures applied in order to achieve compatible results.
– A communication standard does not standardise the functions of the communicating equipment. Therefore, the failure modes of the functions are outside the scope of this part of the IEC 61400-25 series. But both the existence of distributed functions and the impact of function response in devices on the data flow, create some interdependence. – Depending on the definition range of the IEC 61400-25 series, some properties of the device may be proven by information and documents provided with the DUT for the conformance testing instead of the conformance test itself.
– 12 – 61400-25-5 © IEC:2006(E) The conformance test establishes that the communication of the DUT works according the IEC 61400-25 series.
Since the IEC 61400-25 series defines no new communication stacks, the conformance to all seven ISO/OSI layers may be proven by documentation that communication stack software compliant with the corresponding specifications is implemented and may have been pre-tested and optionally certified. In the standard conformance test, only the application according to ACSI can be tested. 5.3 Quality assurance and testing 5.3.1 General In order to assure the quality during conformance testing, a quality assurance system has to be in place.
In general, quality surveillance is used to monitor and verify the status of components during all phases of the conformance tests. For this purpose, inspections are carried out, based on hold and witness points that are indicated by the initiator or its representative in the test and the inspection plan that is supplied by the test facility. These inspections are process related and will provide information and confidence on the quality of the tests. Quality surveillance will reduce the risks of failure during the FAT and SAT. 5.3.2 Quality plan 5.3.2.1 Conformance test quality plan The test facility will supply, for evaluation, a quality plan for the conformance test. The plan shall describe all measures for
...
SLOVENSKI oSIST prEN 61400-25-5:2005
PREDSTANDARD
november 2005
Sistemi generatorjev vetrne turbine – 25-5. del: Komunikacije za spremljanje
in nadzor vetrnih elektrarn – Preskušanje skladnosti
Wind turbines – Part 25-5: Communications for monitoring and control of wind
power plants – Conformance testing
ICS 27.180; 35.240.50 Referenčna številka
oSIST prEN 61400-25-5:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
---------------------- Page: 1 ----------------------
88/242/CDV
COMMITTEE DRAFT (CD)
Project number
IEC/TC or SC:
IEC 61400-25-5 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 88/217/CD & 88/237/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 25-5: Communications for monitoring and control of wind power plants –
Conformance testing
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 (88/217/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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5 Communications for monitoring and control of wind power plants –
6 Conformance testing
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61400-25-5 Ed.1/CDV © IEC:2005
1
2 CONTENTS
3 FOREWORD.5
4 INTRODUCTION.6
5 1 Scope .7
6 2 Normative references .9
7 3 Terms and definitions .11
8 4 Abbreviated terms .13
9 5 Introduction to conformance testing .14
10 5.1 General .14
11 5.2 Conformance test procedures .14
12 5.3 Quality assurance and testing .15
13 5.3.1 General .15
14 5.3.2 Quality Plan .15
15 5.4 Testing.16
16 5.4.1 General .16
17 5.4.2 Device testing .17
18 5.5 Documentation of conformance test report .18
19 6 Device related conformance testing .18
20 6.1 General guidelines.18
21 6.1.1 Test methodology .18
22 6.1.2 Test system architectures .19
23 6.2 Standard test procedures.20
24 6.2.1 Inspection of documentation and version control of the device .20
25 6.2.2 Test of basic system related communication functions .20
26 6.3 Conformance test procedures .20
27 6.3.1 General .20
28 6.3.2 Test procedure requirements.20
29 6.3.3 Test structure .21
30 6.3.4 Test cases to test a server .21
31 6.3.5 Acceptance criteria .32
32 7 Performance tests .33
33 7.1 General .33
34 7.2 Communications Latency .33
35 7.2.1 Transfer time .33
36 7.2.2 Methodology .34
37 7.3 Time Synchronisation and Accuracy.34
38 7.3.1 Time Sync test introduction .34
39 7.3.2 Time Sync test methodology.35
40 7.3.3 Testing criteria.36
41 7.4 Stability Test .36
42 Annex A (informative) Examples of test procedure template.37
43 A.1 Example 1 .37
44 A.2 Example 2 .37
45 Bibliography .38
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1
2 Figure 1 – Conceptual communication model of IEC 61400-25.8
3 Figure 2 – Conceptual conformance assessment process .17
4 Figure 3 – Conceptual test system architecture .19
5 Figure 4 – Test procedure format .21
6 Figure 5 – Performance testing (black box principle).34
7 Figure 6 – Time synchronisation and accuracy test setup .35
8
9
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1
2 INTERNATIONAL ELECTROTECHNICAL COMMISSION
3 ____________
4
5 WIND TURBINES –
6
7 Part 25-5:
8 Communications for monitoring and control of wind power plants –
9 Conformance Testing
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 61400-25-5 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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61400-25-5 Ed.1/CDV © IEC:2005
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 may be found in IEC 61400-25-4.
7 This part of IEC 61400-25 defines the methods and abstract test cases for conformance test-
8 ing of devices used in wind power plants. The intended readers are test system developers.
9
10 NOTE 1 it is recommended to obtain a common knowledge of the standards IEC 61400-25-1, IEC 61400-25-2,
11 IEC 61400-25-3, and IEC 61400-25-4 before reading this part.
12 NOTE 2 Abbreviations used in IEC 61400-25-5 may be listed in Clause 3 or may be found in other parts of IEC
13 61400-25 that are relevant for conformance testing.
14 NOTE 3 the standard IEC 61400-25 has a close relation with other IEC projects like IEC 61850 Addendum 1
15 (Communication networks and systems in substations, Power Quality Monitoring), IEC 62350 (Communications
16 Systems for Distributed Energy Resources (DER)), and IEC 62344 (Hydroelectric power plants – Communication
17 for monitoring and control).
18
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1
2 WIND TURBINES –
3
4 Part 25-5:
5 Communications for monitoring and control of wind power plants –
6 Conformance Testing
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 standard techniques for testing of conformance of imple-
38 mentations, as well as specific measurement techniques to be applied when declaring per-
39 formance parameters. The use of these techniques will enhance the ability of users to pur-
40 chase systems that integrate easily, operate correctly, and support the applications as in-
41 tended.
42 NOTE 1 the role of the test facilities for conformance testing and certifying the results are outside of the scope of
43 IEC 61400-25-5
44
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61400-25-5 Ed.1/CDV © IEC:2005
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
4
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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
6 description of principles and models
7 IEC 61400-25-2, Communications for monitoring and control of wind power plants – informa-
8 tion models
9 IEC 61400-25-3, Communications for monitoring and control of wind power plants – informa-
10 tion exchange models
11 IEC 61400-25-4, Communications for monitoring and control of wind power plants – mapping
12 to communication profile
13 IEC 61850-2:2003, Communication networks and systems in substations – Part 2: Glossary
14 IEC 61850-4:2002, Communication networks and systems in substations – Part 4: System and
15 project management
16 IEC 61850-5:2003, Communication networks and systems in substations – Part 5:
17 Communication requirements for functions and device models
18 IEC 61850-6:2004, Configuration description language for communication in electrical
19 substations related to IEDs
20 IEC 61850-7-1:2003, Communication networks and systems in substations – Part 7-1: Basic
21 communication structure for substations and feeder equipment – Principles and models
22 IEC 61850-7-2:2003, Communication networks and systems in substations – Part 7-2: Basic
23 communication structure for substations and feeder equipment – Abstract communication
24 service interface (ACSI)
25 IEC 61850-7-3:2003, Communication networks and systems in substations – Part 7-3: Basic
26 communication structure for substation and feeder equipment – Common data classes
27 IEC 61850-7-4:2003, Communication networks and systems in substations – Part 7-4: Basic
28 communication structure for substations and feeder equipment – Compatible logical node and
29 data classes
30 IEC 61850-8-1:2004, Communication networks and systems in substations – Part 8-1:
31 Specific communication service mapping (SCSM) – Mappings to MMS (ISO 9506-1 and ISO
32 9506-2) and to ISO/IEC 8802-3
33 ISO/IEC 9646-1, Information technology – Open Systems Interconnection – Conformance
34 testing methodology and framework – Part 1: General concepts
35 ISO/IEC 9646-2, Information technology – Open Systems Interconnection – Conformance
36 testing methodology and framework – Part 2: Abstract test suite specification
37 ISO/IEC 9646-4, Information technology – Open Systems Interconnection – Conformance
38 testing methodology and framework – Part 4: Test realization
39 ISO/IEC 9646-5, Information technology – Open Systems Interconnection – Conformance
40 testing methodology and framework – Part 5: Requirements on test laboratories and clients
41 for the conformance assessment process
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1 ISO/IEC 9646-6, Information technology – Open Systems Interconnection – Conformance
2 testing methodology and framework – Part 6: Protocol profile test specification
3 ISO/IEC 9646-7, Information technology – Open Systems Interconnection – Conformance
4 testing methodology and framework – Part 7: Implementation conformance statements
5
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1 3 Terms and definitions
2 For the purpose of this document, the terms and definitions defined in IEC 61400-25-1 and
3 the following apply.
4 3.1
5 Factory Acceptance Test - FAT
6 customer agreed functional tests of the specifically manufactured substation automation sys-
7 tem or its parts using the parameter set for the planned application. The FAT shall be carried
8 out in the factory of the manufacturer or other agreed-upon location by the use of process
9 simulating test equipment.
10 3.2
11 Interoperability
12 ability of two or more devices from the same vendor (or different vendors) to exchange infor-
13 mation and use that information for correct co-operation.
14 A set of values defined corresponds with the quantities or values of another set.
15 3.3
16 Model Implementation Conformance Statement - MICS
17 details the standard data object model elements supported by the system or device
18 3.4
19 negative test
20 test to verify the correct response of a device or a system when subjected to:
21 – IEC 61400-25 series conformant information and services which are not implemented in
22 the device or system under test
23 – non IEC 61400-25 series conformant information and services sent to the device or system
24 under test
25 3.5
26 Protocol Implementation Conformance Statement - PICS
27 summary of the capabilities of the system to be tested.
28 3.6
29 Protocol Implementation eXtra Information for Testing - PIXIT
30 the Protocol Implementation eXtra Information for Testing document contains system specific
31 information regarding the capabilities of the system to be tested and which are outside the
32 scope of the IEC 61400-25 series. The PIXIT is not subject to standardisation.
33 3.7
34 routine test
35 performed by the manufacturer in order to ensure device operation and safety
36 3.8
37 Site Acceptance Test - SAT
38 verification of each data and control point and the correct functionality within the WPP and its
39 operating environment at the whole installed plant by use of the final parameter set. The SAT
40 is the precondition for the WPP being put into operation.
41 3.9
42 system test
43 verification of correct behaviour of the WPP components and of the overall WPP under vari-
44 ous application conditions. The system test marks the final stage of the development of a
45 WPP system component.
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1 3.10
2 test equipment
3 all tools and instruments which simulate and verify the input/outputs of the operating environ-
4 ment of the WPP such as wind turbine, switchgear, transformers, network control centres or
5 connected telecommunication units on the one side, and the communication links between the
6 system components of the WPP on the other.
7 3.11
8 test facility
9 organisation able to provide appropriate test equipment and trained staff for conformance
10 testing. The management of conformance tests and the resulting information should follow a
11 quality system.
12 3.12
13 type test
14 verification of correct behaviour of the systems components of the WPP by use of the system
15 tested software under the test conditions corresponding with the technical data.
16 The type test marks the final stage of the hardware development and is the precondition for
17 the start of the production. This test shall be carried out with system components which have
18 been manufactured through the normal production cycle.
19 3.13
20 witness point
21 point, defined in the appropriate document at which an inspection will take place on an activ-
22 ity. The activity may proceed without the approval of the initiator of the conformance test. The
23 test facility provides a written notice to the initiator at an agreed time prior to the witness
24 point. The initiator or his representative has the right, but is NOT obligated, to verify the wit-
25 ness point.
26
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1 4 Abbreviated terms
ACSI Abstract Communication Service Interface
ASDU Application Service Data Unit
BRCB Buffered Report Control Block
CDC Common Data Class
CT Current Transducer
DTD Document Type Definition
DUT Device Under Test
FAT Factory Acceptance Test
GI General Interrogation
GOOSE Generic Object Oriented Substation Events
HMI Human Machine Interface
ICD IED Capability Description
IED Intelligent Electronic Device
IP Inter-networking protocol internet Protocol
LCB Log Control Block
LD Logical Device
LN Logical Node
MC MultiCast
MCAA Multicast Application Association
MICS Model Implementation Conformance Statement
MMS Manufacturing Message Specification (ISO 9506 series)
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
RCB Report Control Block
RTU Remote Terminal Unit
SAS Substation Automation System
SAT Site Acceptance Test
SCADA Supervisory Control And Data Acquisition
SCD Substation Configuration Description.
SCL Substation Configuration Language
SCSM Specific Communication Service Mapping
SGCB Setting Group Control Block
SoE Sequence-of-Events
SSD System Specification Description
SUT System Under Test
TCP Transport Control Protocol
TPAA Two Party Application Association
URCB Unbuffered Report Control Block
UTC Coordinated Universal Time
XML Extensible Markup Language
2
3
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1 5 Introduction to conformance testing
2 5.1 General
3 There are many steps involved from the development and production of a device to the proper
4 running of a complete system designed according the specific needs of a customer. Suitable
5 test steps are incorporated in this process.
6 Many internal tests during the development of a device (or a system kit) result in a type test
7 (unit level test) performed at least by the provider and – if required by applicable standards –
8 by an independent test authority. In the context of this document, the term type test is re-
9 stricted to the functional behaviour of the device excluding communication.
10 Continuing routine tests in the production chain are necessary to ensure a constant quality of
11 delivered devices in accordance with the quality procedures of the producer.
12 A conformance test is the type test for communication and – since communication establishes
13 a system – the basic integrated systems test of the incorporated system components. As a
14 global communications standard, the IEC 61400-25 series includes standardised conformance
15 tests to insure that all suppliers comply with applicable requirements.
16 Type tests and conformance tests do not completely guarantee that all functional and per-
17 formance requirements are met. However, when properly performed, such tests significantly
18 reduce the risk of costly problems occurring during system integration in the factory and on-
19 site.
20 Conformance testing does not replace project specific system tests such as the FAT and SAT.
21 The FAT and SAT are based on customer requirements for a dedicated WPP system and are
22 done by the system integrator and normally witnessed by the customer. These tests increase
23 the confidence level that all potential problems in the system have been identified
...
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