SIST EN 61400-25-5:2018

SLOVENSKI STANDARD
01-februar-2018
1DGRPHãþD
SIST EN 61400-25-5:2007
Sistemi za proizvodnjo energije na veter - 25-5. del: Komunikacije za spremljanje in
nadzor vetrnih elektrarn - Preskušanje skladnosti (IEC 61400-25-5:2017)
Wind energy generation systems - Part 25-5: Communications for monitoring and control
of wind power plants - Conformance testing (IEC 61400-25-5:2017)
Ta slovenski standard je istoveten z: EN 61400-25-5:2017
ICS:
27.180 Vetrne elektrarne Wind turbine energy systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61400-25-5

NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2017
ICS 27.180 Supersedes EN 61400-25-5:2007
English Version
Wind energy generation systems - Part 25-5: Communications
for monitoring and control of wind power plants - Compliance
testing
(IEC 61400-25-5:2017)
Systèmes de production d'énergie éolienne - Partie 25-5: Windenergieanlagen - Teil 25-5: Kommunikation für die
Communications pour la surveillance et la commande des Überwachung und Steuerung von Windenergieanlagen -
centrales éoliennes - Essais de conformité Konformitätsprüfungen
(IEC 61400-25-5:2017) (IEC 61400-25-5:2017)
This European Standard was approved by CENELEC on 2017-10-25. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61400-25-5:2017 E
European foreword
The text of document 88/643/FDIS, future edition 2 of IEC 61400-25-5, prepared by IEC/TC 88 "Wind
energy generation systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 61400-25-5:2017.

The following dates are fixed:
• latest date by which the document has to be (dop) 2018-07-25
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-10-25
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61400-25-5:2007.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 61400-25-5:2017 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year

IEC 61400-25-1 2006 Wind turbines - Part 25-1: Communications for EN 61400-25-1 2007
monitoring and control of wind power plants -
Overall description of principles and models
IEC 61400-25 series Wind turbines - Part 25: Communications for EN 61400-25 series
monitoring and control of wind power plants
IEC 61400-25-2 2015 Wind turbines - Part 25-2: Communications for EN 61400-25-2 2015
monitoring and control of wind power plants -
Information models
IEC 61400-25-3 2015 Wind turbines - Part 25-3: Communications for EN 61400-25-3 2015
monitoring and control of wind power plants -
Information exchange models
IEC 61400-25-4 2016 Wind energy generation systems - Part 25-4: EN 61400-25-4 2017
Communications for monitoring and control of
wind power plants - Mapping to communication
profile
IEC 61850-4 2011 Communication networks and systems for EN 61850-4 2011
power utility automation - Part 4: System and
project management
IEC 61850-6 2009 Communication networks and systems for EN 61850-6 2010
power utility automation - Part 6: Configuration
description language for communication in
electrical substations related to IEDs
IEC 61850-7-1 2011 Communication networks and systems for EN 61850-7-1 2011
power utility automation - Part 7-1: Basic
communication structure - Principles and
models
IEC 61850-7-2 2010 Communication networks and systems for EN 61850-7-2 2010
power utility automation - Part 7-2: Basic
information and communication structure -
Abstract communication service interface
(ACSI)
IEC 61850-7-3 2010 Communication networks and systems for EN 61850-7-3 2011
power utility automation - Part 7-3: Basic
communication structure - Common data
classes
IEC 61850-7-4 2010 Communication networks and systems for EN 61850-7-4 2010
power utility automation - Part 7-4: Basic
communication structure - Compatible logical
node classes and data object classes
IEC 61850-10 2012 Communication networks and systems for EN 61850-10 2013
power utility automation - Part 10: Conformance
testing
ISO/IEC 9646 series Information technology - Open Systems EN ISO/IEC 9646 series
Interconnection - Conformance testing
methodology and framework
IEC 61400-25-5 ®
Edition 2.0 2017-09
INTERNATIONAL
STANDARD
colour
inside
Wind energy generation systems –

Part 25-5: Communications for monitoring and control of wind power plants –

Compliance testing
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.180 ISBN 978-2-8322-4733-4

– 2 – IEC 61400-25-5:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Abbreviated terms . 12
5 Introduction to compliance testing . 12
5.1 General . 12
5.2 Compliance test procedures . 13
5.3 Quality assurance and testing . 14
5.3.1 General . 14
5.3.2 Quality plan . 14
5.4 Testing . 15
5.4.1 General . 15
5.4.2 Device testing . 16
5.5 Documentation of compliance test report . 17
6 Device related compliance testing . 17
6.1 Test methodology . 17
6.2 Compliance test procedures . 18
6.2.1 General . 18
6.2.2 Test procedure requirements . 18
6.2.3 Test structure . 19
6.2.4 Test cases to test a server device. 19
6.2.5 Test cases to test a client device . 38
6.2.6 Acceptance criteria . 52
7 Performance tests . 52
7.1 General . 52
7.2 Communication latency – Transfer time test introduction . 53
7.3 Time synchronisation and accuracy . 54
7.3.1 Time Sync test introduction. 54
7.3.2 Time Sync test methodology . 55
7.3.3 Testing criteria . 55
Annex A (informative) Examples of test procedure template . 56
A.1 Example 1 . 56
A.2 Example 2 . 56

Figure 1 – Conceptual communication model of the IEC 61400-25 standard series . 8
Figure 2 – Conceptual compliance assessment process. 16
Figure 3 – Test procedure format . 19
Figure 4 – Test system architecture to test a server device . 20
Figure 5 – Test system architecture to test a client device . 39
Figure 6 – Performance testing (black box principle) . 54
Figure 7 – Time synchronisation and accuracy test setup . 55

IEC 61400-25-5:2017 © IEC 2017 – 3 –
Table 1 – Server documentation test cases . 20
Table 2 – Server data model test cases . 21
Table 3 – Association positive test cases . 22
Table 4 – Association negative test cases . 22
Table 5 – Server positive test cases . 23
Table 6 – Server negative test cases . 24
Table 7 – Data set positive test cases . 25
Table 8 – Date set negative test cases . 26
Table 9 – Substitution positive test cases . 26
Table 10 – Unbuffered reporting positive test cases . 27
Table 11 – Unbuffered reporting negative test cases . 28
Table 12 – Buffered reporting positive test cases . 29
Table 13 – Buffered reporting negative test cases. 31
Table 14 – Log positive test cases . 32
Table 15 – Log negative test cases . 32
Table 16 – Control model test cases . 33
Table 17 – DOns test cases . 35
Table 18 – SBOns test cases . 35
Table 19 – DOes test cases . 36
Table 20 – SBOes test cases . 37
Table 21 – Time positive test cases . 38
Table 22 – Time negative test cases . 38
Table 23 – Client documentation test case . 39
Table 24 – Client data model test case . 40
Table 25 – Association positive test cases . 40
Table 26 – Association negative test cases . 41
Table 27 – Server positive test cases. 41
Table 28 – Server negative test cases . 42
Table 29 – Data set positive test cases . 43
Table 30 – Data set negative test cases. 43
Table 31 – Substitution test cases . 44
Table 32 – Unbuffered reporting positive test cases . 44
Table 33 – Unbuffered reporting negative test cases . 45
Table 34 – Buffered reporting positive test cases . 46
Table 35 – Buffered reporting negative test cases. 47
Table 36 – Log positive test cases . 48
Table 37 – Log negative test cases . 48
Table 38 – Control model positive test cases . 49
Table 39 – Control model negative test cases . 49
Table 40 – SBOes test cases . 50
Table 41 – SBOns test cases . 50
Table 42 – DOes test cases . 51
Table 43 – DOns test cases . 51

– 4 – IEC 61400-25-5:2017 © IEC 2017
Table 44 – Time positive test cases . 52
Table 45 – Time negative test cases . 52

IEC 61400-25-5:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WIND ENERGY GENERATION SYSTEMS –

Part 25-5: Communications for monitoring
and control of wind power plants –
Compliance 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61400-25-5 has been prepared by IEC technical committee 88:
Wind energy generation systems.
This second edition cancels and replaces the first edition published in 2006. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• Harmonization with structure and test cases in IEC 61850-10:2012.
• The use of SCL in the compliance testing process is out of the scope for this edition, but
will be considered for Edition 3.
• Reduction of overlap between standards and simplification by increased referencing to the
IEC 61850 standard series.
– 6 – IEC 61400-25-5:2017 © IEC 2017
• All test cases applying SCL files are still not a part of the present document as the SCL
specifications for wind power domain are still pending to be published.
The text of this International Standard is based on the following documents:
FDIS Report on voting
88/643/FDIS 88/650/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
A list of all parts of the IEC 61400 series, under the general title Wind energy generation
systems, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
IEC 61400-25-5:2017 © IEC 2017 – 7 –
INTRODUCTION
The focus of IEC 61400-25 (all parts) is on the communications between wind power plant
components such as wind turbines and actors such as SCADA Systems. Internal
communication within wind power plant components is outside the scope of IEC 61400-25 (all
parts).
IEC 61400-25 (all parts) is designed for a communication environment supported by a client-
server model. Three areas are defined, that are modelled separately to ensure the scalability
of implementations:
a) wind power plant information models,
b) information exchange model, and
c) mapping of these two models to a standard communication profile.
The wind power plant information model and the information exchange model, viewed
together, constitute an interface between client and server. In this conjunction, the wind
power plant information model serves as an interpretation frame for accessible wind power
plant data. The wind power plant information model is used by the server to offer the client a
uniform, component-oriented view of the wind power plant data. The information exchange
model reflects the whole active functionality of the server. IEC 61400-25 (all parts) enables
connectivity between a heterogeneous combination of client and servers from different
manufacturers and suppliers.
As depicted in Figure 1, IEC 61400-25 (all parts) defines a server with the following aspects:
– information provided by a wind power plant component, 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 document 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).
IEC 61400-25 (all parts) only defines how to model the information, information exchange and
mapping to specific communication protocols. IEC 61400-25 (all parts) excludes a definition
of how and where to implement the communication interface, the application program
interface and implementation recommendations. However, the objective of IEC 61400-25 (all
parts) is that the information associated with a single wind power plant component (such as
the wind turbine) is accessible through a corresponding logical device.
The intended readers for the present document are device or system and/or system
component manufacturers and test system developers/providers.
NOTE Abbreviations used in IEC 61400-25-5 are listed in Clauses 3 and 4 or can be found in other parts of
IEC 61400-25 standard series that are relevant for compliance testing.

– 8 – IEC 61400-25-5:2017 © IEC 2017
WIND ENERGY GENERATION SYSTEMS –

Part 25-5: Communications for monitoring
and control of wind power plants –
Compliance testing
1 Scope
This part of IEC 61400-25 specifies standard techniques for testing of compliance 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.
This part of IEC 61400-25 defines:
• the methods and abstract test cases for compliance testing of server and client devices
used in wind power plants,
• the metrics to be measured in said devices according to the communication requirements
specified in IEC 61400-25 (all parts).
NOTE The role of the test facilities for compliance testing and certifying the results are outside of the scope of
IEC 61400-25-5.
Communication model of the IEC 61400-25 series
Client Server
Messaging
Information exchange Information exchange
through mapping
model (get, set, report, model (get, set, report,
to communication
log, control, publish / log, control, publish /
profile (Read,
subscribe, etc.) subscribe, etc.)
write, . message)
defined in defined in
defined in
Wind power
Actor IEC 61400-25-3 IEC 61400-25-3
IEC 61400-25-4
plant
e.g.
SCADA component
e.g. wind turbine
Wind power plant Wind power plant
information model information model
(rotor speed, break
defined in
status, total power
Application IEC 61400-25-2 Application
production, etc.)
defined in
IEC 61400-25-2
Outside
Outside
scope
scope
IEC
Figure 1 – Conceptual communication model of the
IEC 61400-25 standard series
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 61400-25-5:2017 © IEC 2017 – 9 –
IEC 61400-25 (all parts), Wind turbines – Part 25: Communications for monitoring and control
of wind power plants
IEC 61400-25-1:2006, Wind turbines – Part 25-1: Communications for monitoring and control
of wind power plants – Overall description of principles and models
IEC 61400-25-2:2015, Wind turbines – Part 25-2: Communications for monitoring and control
of wind power plants – Information models
IEC 61400-25-3:2015, Wind turbines – Part 25-3: Communications for monitoring and control
of wind power plants – Information exchange models
IEC 61400-25-4:2016, Wind energy generation systems – Part 25-4: Communications for
monitoring and control of wind power plants – Mapping to communication profile
IEC 61850-4:2011, Communication networks and systems for power utility automation –
Part 4: System and project management
IEC 61850-6:2009, Communication networks and systems for power utility automation –
Part 6: Configuration description language for communication in electrical substations related
to IEDs
IEC 61850-7-1:2011, Communication networks and systems for power utility automation –
Part 7-1: Basic communication structure – Principles and models
IEC 61850-7-2:2010, Communication networks and systems for power utility automation –
Part 7-2: Basic information and communication structure – Abstract communication service
interface (ACSI)
IEC 61850-7-3:2010, Communication networks and systems for power utility automation –
Part 7-3: Basic communication structure – Common data classes
IEC 61850-7-4:2010, Communication networks and systems for power utility automation –
Part 7-4: Basic communication structure – Compatible logical node classes and data object
classes
IEC 61850-10:2012, Communication networks and systems for power utility automation –
Part 10: Conformance testing
ISO/IEC 9646 (all parts), Information technology – Open Systems Interconnection –
Compliance testing methodology and framework
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61400-25-1 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

– 10 – IEC 61400-25-5:2017 © IEC 2017
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
Note 1 to entry: 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
hold point
point, defined in the appropriate document beyond which an activity shall not proceed without
the approval of the initiator of the compliance test
Note 1 to entry: The test facility shall provide a written notice to the initiator at an agreed time prior to the hold
point.
Note 2 to entry: The initiator or his representative is obligated to verify the hold point and approve the proceeding
of the activity.
3.3
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
Note 1 to entry: Set of values defined corresponds with the quantities or values of another set.
3.4
model implementation compliance statement
MICS
statement that details the standard data object model elements supported by the system or
device
3.5
negative test
test to verify the correct response of a device or a system when subjected to:
– IEC 61400-25 (all parts) conformant information and services which are not implemented
in the device or system under test,
– non IEC 61400-25 (all parts) conformant information and services sent to the device or
system under test
3.6
protocol implementation compliance statement
PICS
statement with the summary of the communication capabilities of the system or device to be
tested
3.7
protocol implementation extra information for testing
PIXIT
statement with system or device specific information to be tested and which is outside the
scope of IEC 61400-25 (all parts)
Note 1 to entry: The PIXIT is not subject to standardisation.
3.8
routine test
test performed by the manufacturer in order to ensure device operation and safety

IEC 61400-25-5:2017 © IEC 2017 – 11 –
3.9
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
Note 1 to entry: The SAT is the precondition for the WPP being put into operation.
3.10
system test
verification of correct behaviour of the WPP components and of the overall WPP under
various application conditions
Note 1 to entry: The system test marks the final stage of the development of a WPP system component.
3.11
system related test
verification of correct behaviour of the IEDs and of the overall PUAS under specific
application conditions
Note 1 to entry: The system related test is part of the final stage of the development of IEDs as belonging to a
PUAS-product family.
3.12
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
3.13
test facility
organisation able to provide appropriate test equipment and trained staff for compliance
testing
Note 1 to entry: The management of compliance tests and the resulting information should follow a quality
system.
3.14
technical issues compliance statement
TICS
statement with device specific information regarding the implemented technical issues
detected after publication of the standard
Note 1 to entry: The TICS is not subject to standardisation.
3.15
type test
verification of correct behaviour of the IEDs (systems components) of the WPP by use of the
system tested software under the test conditions corresponding with the technical data
Note 1 to entry: 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.
3.16
witness point
point, defined in the appropriate document, at which an inspection will take place on an
activity
Note 1 to entry: The activity may proceed without the approval of the initiator of the compliance 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.

– 12 – IEC 61400-25-5:2017 © IEC 2017
4 Abbreviated terms
ACSI Abstract Communication Service Interface
BRCB Buffered Report Control Block
CDC Common Data Class
DUT Device Under Test
FAT Factory Acceptance Test
GI General Interrogation
HMI Human Machine Interface
ICD IED capability subscription
IED Intelligent Electronic Device
IID Instantiated IED description
IP Inter-networking protocol internet Protocol
LCB Log Control Block
LD Logical Device
LN Logical Node
MICS Model Implementation Compliance Statement
PICS Protocol Implementation Compliance Statement
PIXIT Protocol Implementation eXtra Information for Testing
PUAS Power Utility Automation System
RCB Report Control Block
RTU Remote Terminal Unit
SAT Site Acceptance Test
SCADA Supervisory Control And Data Acquisition
SCSM Specific Communication Service Mapping
SGCB Setting Group Control Block
SoE Sequence-of-Events
SUT System Under Test
TICS Technical Issues Compliance Statement
TPAA Two Party Application Association
TUT Tool Under Test
URCB Unbuffered Report Control Block
UTC Coordinated Universal Time
WPP Wind Power Plant
5 Introduction to compliance 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 component 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 IEC 61400-25 (all
parts), the term type test is restricted to the functional behaviour of the device excluding
communication.
IEC 61400-25-5:2017 © IEC 2017 – 13 –
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 compliance 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, IEC 61400-25 (all parts) includes standardised compliance
tests to ensure that all suppliers comply with applicable requirements.
Type tests and compliance 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.
Compliance 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 Compliance test procedures
In general, compliance 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.
Compliance testing demonstrates the capability of the Device Under Test (DUT) to operate
with other systems or system components in a specified way according to IEC 61400-25 (all
parts).
Compliance 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 IEC 61400-25 (all parts). 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 IEC 61400-25 (all parts), some properties of the
device may be proven by information and documents provided with the DUT for the
compliance testing instead of the compliance test itself.
The compliance test establishes that the communication of the DUT works according to
IEC 61400-25 (all parts). IEC 61400-25 (all parts) is focused on interoperability using data
objects, functions and device models including services above or at the application level
(ACSI).
Since IEC 61400-25 (all parts) defines no new communication stacks, the compliance 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 compliance test, only the application according
to ACSI can be tested.
– 14 – IEC 61400-25-5:2017 © IEC 2017
5.3 Quality assurance and testing
5.3.1 General
In order to assure the quality during compliance testing, a quality assurance system has to be
in place. This shall be clearly demonstrated by the test facility and apply as well to the quality
assurance system of any sub-supplier.
In general, quality surveillance is used to monitor and verify the status of components during
all phases of the compliance 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 Compliance test quality plan
The test facility will supply, for evaluation, a quality plan for the compliance test.
The plan shall describe all measures for the scope of work and/or deliveries in the areas of
organisation, time, information and quality. There is only one plan for the test facility and its
sub-suppliers.
The compliance test quality plan is proposed to contain the following:
– A complete and detailed description of the work methods. This will help ensure that all
verifiable activities will fulfil all applicable requirements and conditions as stated in the
scope of work during the time allowed.
– A detailed description of all tasks to be performed, including references to the schedule,
an overview of the involved staff, materials and work methods as well as relevant methods
and procedures.
– A detailed description of the organisation, including the assignments, tasks and
responsibilities of mentioned staff during the different stages of the test programs. The
description shall include all tests, inspections, research and audits during the various
stages of the tests and the dates
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