SIST EN IEC 61400-26-1:2019
(Main)Wind energy generation systems - Part 26-1: Availability for wind energy generation systems (IEC 61400-26-1:2019)
Wind energy generation systems - Part 26-1: Availability for wind energy generation systems (IEC 61400-26-1:2019)
This part of IEC 61400 defines an information model from which time-based, and productionbased
availability indicators for services can be derived and reported.
The purpose is to provide standardised metrics that can be used to create and organise
methods for availability calculation and reporting according to the user’s needs.
The document provides information categories, which unambiguously describe how data is
used to characterise and categorise the operation. The information model specifies category
priority for discrimination between possible concurrent categories. Further, the model defines
entry and exit criteria to allocate fractions of time and production values to the proper
information category. A full overview of all information categories, exit and entry criteria is
given in Annex A, see Figure A.1.
The document can be applied to any number of WTGSs, whether represented by an individual
turbine, a fleet of wind turbines, a wind power station or a portfolio of wind power stations. A
wind power station is typically made up of all WTGSs, functional services and balance of plant
elements as seen from the point of common coupling.
Examples are provided in informative annexes which provide guidelines for calculation of
availability indicators:
• examples of optional information categories, Annex B;
• examples of application of the information categories for determination of availability,
Annex C;
• examples of application scenarios, Annex D;
• examples on methods for determination of potential production, Annex E;
• examples of how to expand the model to balance of plant elements, Annex F.
This document does not prescribe how availability indicators shall be calculated. The standard
does not specify the method of information acquisition, how to estimate the production terms
or to form the basis for power curve performance measurements – which is the objective of
IEC 61400-12.
A degree of uncertainty is inherent in both the measurement of a power curve and the
calculation of potential energy production. The stakeholders should agree upon acceptable
uncertainty parameters.
Windenergieanlagen - Teil 26-1: Verfügbarkeit von Windenergieanlagen (IEC 61400-26-1:2019)
Systèmes de génération d'énergie éolienne - Partie 26-1: Disponibilité des systèmes de génération d'énergie éolienne (IEC 61400-26-1:2019)
l'IEC 61400-26-1:2019 définit un modèle d'informations à partir duquel peuvent être déduits et consignés les indicateurs de disponibilité temporelle et en production des services.
Il s'agit de fournir des mesures normalisées pouvant être utilisées pour créer et organiser des méthodes de calcul et de déclaration de la disponibilité en fonction des besoins de l'utilisateur.
Le présent document fournit des catégories d'informations, qui décrivent clairement la manière dont les données sont utilisées pour caractériser et catégoriser le fonctionnement. Le modèle d'informations spécifie une priorité de catégorie permettant de distinguer les différentes catégories concurrentes possibles. En outre, le modèle définit les critères d'entrée et de sortie permettant d'attribuer des fractions de temps et des valeurs de production à la catégorie d'informations adéquate. Une vue d'ensemble de toutes les catégories d'informations, des critères d'entrée et des critères de sortie est fournie à l'annexe.
Le présent document peut être appliqué à un certain nombre d'aérogénérateurs (éolienne individuelle, parc d'éoliennes, centrale éolienne ou ensemble de centrales éoliennes). Une centrale éolienne est généralement composée de l'ensemble des aérogénérateurs, services fonctionnels et éléments d'installation de production d'énergie, considérés par rapport au point de couplage commun (PCC).
Cette première édition annule et remplace l'IEC TS 61400-26-1:2011, l'IEC TS 61400-26-2:2014 and l'IEC TS 61400-26-3:2016.
Sistemi za proizvodnjo energije na veter - 26-1. del: Razpoložljivost sistemov za proizvodnjo energije na veter (IEC 61400-26-1:2019)
Ta del standarda IEC 61400 določa informacijski model, iz katerega je mogoče izpeljati časovne
in proizvodne kazalnike razpoložljivosti storitev ter o njih poročati.
Namen je zagotoviti standardizirane metrike, ki jih je mogoče uporabiti za ustvarjanje in urejanje metod za izračun razpoložljivosti ter poročanje glede na potrebe uporabnika.
Dokument vsebuje kategorije informacij, ki nedvoumno opisujejo, kako se podatki uporabljajo za karakterizacijo in kategorizacijo delovanja. Model informacij določa prednostne kategorije za razlikovanje med možnimi sočasnimi kategorijami. Nadalje model definira vstopna in izstopna merila za dodeljevanje časovnih ter proizvodnih vrednosti ustrezni kategoriji informacij. Popoln pregled vseh kategorij informacij, izhodnih in vstopnih meril je podan v dodatku A, glej sliko A.1.
Dokument je mogoče uporabiti za poljubno število proizvodnih sistemov vetrnih elektrarn ne glede na to, ali jih predstavlja posamezna turbina, serija vetrnih turbin, vetrna elektrarna ali nabor vetrnih elektrarn. Vetrna elektrarna je običajno sestavljena iz vseh proizvodnih sistemov vetrnih elektrarn, funkcionalnih storitev in ravnovesja elementov elektrarne, kot je razvidno iz skupne priključne točke.
Primeri so navedeni v informativnih dodatkih, v katerih so smernice za izračun kazalnikov razpoložljivosti:
• primeri izbirnih kategorij informacij, dodatek B;
• primeri uporabe kategorij informacij za določanje razpoložljivosti, dodatek C;
• primeri scenarijev uporabe, dodatek D;
• primeri metod za določanje potencialne proizvodnje, dodatek E;
• primeri, kako razširiti model na ravnovesje elementov elektrarne, dodatek F.
Ta dokument ne predpisuje načina izračunavanja kazalnikov razpoložljivosti. Standard ne določa načina pridobivanja informacij, kako oceniti proizvodne pogoje ali oblikovati podlago za meritve zmogljivosti krivulje moči – kar je cilj standarda IEC 61400-12.
Stopnja negotovosti je značilna tako za merjenje krivulje moči kot tudi za izračun potencialne proizvodnje energije. Zainteresirane strani naj bi se dogovorile o sprejemljivih parametrih negotovosti.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 61400-26-1:2019
01-oktober-2019
Nadomešča:
SIST-TS CLC/TS 61400-26-1:2017
SIST-TS CLC/TS 61400-26-2:2017
SIST-TS CLC/TS 61400-26-3:2017
Sistemi za proizvodnjo energije na veter - 26-1. del: Razpoložljivost sistemov za
proizvodnjo energije na veter (IEC 61400-26-1:2019)
Wind energy generation systems - Part 26-1: Availability for wind energy generation
systems (IEC 61400-26-1:2019)
Windenergieanlagen - Teil 26-1: Verfügbarkeit von Windenergieanlagen (IEC 61400-26-
1:2019)
Systèmes de génération d'énergie éolienne - Partie 26-1: Disponibilité des systèmes de
génération d'énergie éolienne (IEC 61400-26-1:2019)
Ta slovenski standard je istoveten z: EN IEC 61400-26-1:2019
ICS:
27.180 Vetrne elektrarne Wind turbine energy systems
SIST EN IEC 61400-26-1:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 61400-26-1:2019
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SIST EN IEC 61400-26-1:2019
EUROPEAN STANDARD EN IEC 61400-26-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2019
ICS 27.180 Supersedes CLC/TS 61400-26-1:2017,
CLC/TS 61400-26-2:2017,
CLC/TS 61400-26-3:2017
and all of their amendments and corrigenda (if any)
English Version
Wind energy generation systems - Part 26-1: Availability for wind
energy generation systems
(IEC 61400-26-1:2019)
Systèmes de génération d'énergie éolienne - Partie 26-1: Windenergieanlagen - Teil 26-1: Verfügbarkeit von
Disponibilité des systèmes de génération d'énergie Windenergieanlagen
éolienne (IEC 61400-26-1:2019)
(IEC 61400-26-1:2019)
This European Standard was approved by CENELEC on 2019-07-03. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61400-26-1:2019 E
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SIST EN IEC 61400-26-1:2019
EN IEC 61400-26-1:2019 (E)
European foreword
The text of document 88/665/CDV, future edition 1 of IEC 61400-26-1, prepared by IEC/TC 88 "Wind energy
generation systems" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 61400-26-1:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national level by (dop) 2020-04-03
publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-07-03
document have to be withdrawn
This document supersedes CLC/TS 61400-26-1:2017, CLC/TS 61400-26-2:2017 and
CLC/TS 61400‑26‑3:2017 and all of their amendments and corrigenda (if any).
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 61400-26-1:2019 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 61400-25-2:2006 NOTE Harmonized as EN 61400-25-2:2007 (not modified)
IEC 61400-25-3:2006 NOTE Harmonized as EN 61400-25-3:2007 (not modified)
IEC 61400-25-4:2008 NOTE Harmonized as EN 61400-25-4:2008 (not modified)
2
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SIST EN IEC 61400-26-1:2019
EN IEC 61400-26-1:2019 (E)
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 60050-415 - International Electrotechnical Vocabulary - - -
Part 415: Wind turbine generator systems
IEC 61400-1 - Wind energy generation systems - Part 1: EN IEC 61400-1 -
Design requirements
3
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SIST EN IEC 61400-26-1:2019
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SIST EN IEC 61400-26-1:2019
IEC 61400-26-1
®
Edition 1.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wind energy generation systems –
Part 26-1: Availability for wind energy generation systems
Systèmes de génération d'énergie éolienne –
Partie 26-1: Disponibilité des systèmes de génération d'énergie éolienne
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.180 ISBN 978-2-8322-6797-4
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 61400-26-1:2019
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CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions and abbreviated terms . 13
3.1 Terms and definitions . 13
3.2 Abbreviated terms . 15
4 Information model . 18
4.1 Basic model . 18
4.2 Information categories . 18
4.3 Information category priority . 19
4.4 Services . 20
4.5 Service delivery layers . 21
4.5.1 General . 21
4.5.2 Time layer . 21
4.5.3 Actual service delivery layer . 21
4.5.4 Potential service delivery layer . 21
4.5.5 Lost service . 22
4.6 Modelling multiple services . 22
4.7 Determination of information categories for the WPS . 24
4.8 Application of the information model to components of the WEGS. 25
5 Information categories . 25
5.1 INFORMATION AVAILABLE . 25
5.2 OPERATIVE . 26
5.3 IN SERVICE . 26
5.3.1 General . 26
5.3.2 FULL PERFORMANCE . 26
5.3.3 PARTIAL PERFORMANCE . 27
5.3.4 READY STANDBY . 27
5.4 OUT OF SERVICE . 28
5.4.1 General . 28
5.4.2 TECHNICAL STANDBY . 28
5.4.3 OUT OF ENVIRONMENTAL SPECIFICATION . 28
5.4.4 REQUESTED SHUTDOWN . 29
5.4.5 OUT OF ELECTRICAL SPECIFICATION . 29
5.5 NON-OPERATIVE . 30
5.5.1 General . 30
5.5.2 SCHEDULED MAINTENANCE . 30
5.5.3 PLANNED CORRECTIVE ACTION . 30
5.5.4 FORCED OUTAGE . 31
5.5.5 SUSPENDED. 31
5.6 FORCE MAJEURE . 32
5.7 INFORMATION UNAVAILABLE . 32
Annex A (informative) Entry and exit conditions overview for WEGS . 33
Annex B (informative) Optional information categories for WEGS information model –
illustrative explanation and examples . 34
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B.1 General . 34
B.2 PARTIAL PERFORMANCE – optional categories . 34
B.2.1 Introduction of optional categories . 34
B.2.2 Derated . 34
B.2.3 Degraded. 35
B.3 OUT OF ENVIRONMENTAL SPECIFICATION – optional categories . 36
B.3.1 Introduction of optional categories . 36
B.3.2 Calm winds . 36
B.3.3 Other environmental . 36
B.4 PLANNED CORRECTIVE ACTION – optional categories . 37
B.4.1 Introduction of optional categories . 37
B.4.2 Retrofit . 37
B.4.3 Upgrade . 37
B.4.4 Other planned corrective action . 37
B.5 FORCED OUTAGE – optional category . 38
B.5.1 Introduction of optional categories . 38
B.5.2 Response . 38
B.5.3 Diagnostic . 39
B.5.4 Logistic . 39
B.5.5 Repair . 39
B.6 SUSPENDED – optional categories. 40
B.6.1 Introduction of optional categories . 40
B.6.2 Suspended scheduled maintenance . 40
B.6.3 Suspended planned corrective action . 40
B.6.4 Suspended forced outage . 40
B.7 Considerations of competing assignment of lost service . 41
Annex C (informative) Examples of availability indicators . 42
C.1 General . 42
C.1.1 Introduction to the scope of this annex . 42
C.1.2 Time-based availability . 42
C.1.3 Production-based availability . 42
C.1.4 Mapping of availability and unavailability . 43
C.2 Time-based availability . 43
C.2.1 General . 43
C.2.2 Time-based availability – "operational availability" . 43
C.2.3 Time based availability – "technical availability" . 45
C.3 Production-based availability . 46
C.3.1 General . 46
C.3.2 Production-based availability – "operational availability" . 46
C.3.3 Production-based availability – "technical availability". 47
C.4 Capacity factor and other performance indicators . 48
C.4.1 General . 48
C.4.2 Capacity factor . 49
C.4.3 Production ratio . 49
C.4.4 Mean-value based information . 49
Annex D (informative) Verification scenarios – examples . 50
D.1 General . 50
D.2 Time-based scenarios for a WTGS . 50
D.2.1 Introduction to verification scenarios . 50
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D.2.2 Scenario 1 – communication aspects . 51
D.2.3 Scenario 2 – partial operational aspects . 52
D.2.4 Scenario 3 – maintenance aspects . 53
D.2.5 Scenario 4 – operational aspects . 54
D.2.6 Scenario 5 – grid/electrical network aspects . 57
D.2.7 Scenario 6 – environmental aspects . 58
D.3 Production-based scenarios for a WTGS . 60
D.3.1 Introduction to verification scenarios . 60
D.3.2 Scenarios under FULL PERFORMANCE . 60
D.3.3 Scenarios under PARTIAL PERFORMANCE . 62
D.3.4 Scenarios under READY STANDBY . 64
D.3.5 Scenarios under TECHNICAL STANDBY . 65
D.3.6 Scenarios under OUT OF ENVIRONMENTAL SPECIFICATION . 66
D.3.7 Scenarios under REQUESTED SHUTDOWN . 67
D.3.8 Scenarios under OUT OF ELECTRICAL SPECIFICATION . 68
D.3.9 Scenarios under SCHEDULED MAINTENANCE . 69
D.3.10 Scenarios under PLANNED CORRECTIVE ACTION . 69
D.3.11 Scenarios under FORCED OUTAGE . 70
D.3.12 Scenarios under SUSPENDED . 71
D.3.13 Scenarios under FORCE MAJEURE . 72
D.4 Production-based scenarios for a WTGS – calculation of lost production . 72
D.4.1 Introduction to verification scenarios . 72
D.4.2 Production-based availability algorithm based on mandatory information
categories ("operational availability") . 72
D.4.3 Production-based availability algorithm – including optional categories
("technical availability") . 75
D.5 Production-based scenarios for a WPS . 76
D.5.1 Introduction to verification scenarios . 76
D.5.2 Example 1: Normal operation – all WPS . 76
D.5.3 Example 2: Normal operation – part of WPS . 77
D.5.4 Example 3: Contaminated WTGSs blades – all WPS . 78
D.5.5 Example 4: Contaminated WTGSs blades – part of WPS . 79
D.5.6 Example 5: BOP limitations – all WPS . 80
D.5.7 Example 6: BOP limitations – part of WPS . 81
D.5.8 Example 7: "Spinning reserve" – part of WPS . 82
D.5.9 Example 8: "Spinning reserve" – all WPS . 83
D.5.10 Example 9: Noise restrictions – warranty related . 84
D.5.11 Example 10: Noise restrictions – environmentally related . 86
D.5.12 Example 11: Ice storm on grid – all WPS . 87
Annex E (informative) Possible methods for determination of potential WEGS energy
production . 89
E.1 General . 89
E.2 Specific power curve and velocities methods . 89
E.2.1 General . 89
E.2.2 Nacelle anemometer wind measurement with power curve . 89
E.2.3 Upstream wind measurement with power curve . 90
E.2.4 Met mast wind measurement with correction factors and power curve. 90
E.3 Power-based methods . 91
E.3.1 General . 91
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E.3.2 Average production of WPS . 91
E.3.3 Average production of representative comparison WTGSs . 92
E.3.4 Data acquisition with comparison chart/database . 93
E.3.5 Average wind speed of WPS . 93
E.4 Determination of potential production for a WPS – examples . 94
E.4.1 Overview . 94
E.4.2 Primary service . 94
E.4.3 Secondary services . 94
Annex F (informative) Balance of plant integration . 96
F.1 WPS functions and services . 96
F.2 Externally required functions and services . 96
F.3 Internally required functions and services . 96
F.4 Expansion of the information model for BOP functions and services . 97
Bibliography . 98
Figure 1 – Data stakeholders for a wind energy generation system . 10
Figure 2 – Information category overview . 19
Figure 3 – Information category priority . 20
Figure 4 – Three-layer information model . 21
Figure 5 – Information categories, definitions for layer 2 and layer 3, mandatory
categories . 23
Figure 6 – Examples of an information model representing active energy, reactive
energy, high and low frequency response services . 24
Figure A.1 – Overview of the entry and exit conditions of all mandatory information
categories described in this document . 33
Figure B.1 – Information category overview – mandatory and optional . 35
Figure B.2 – Workflow breakdown structure . 38
Figure B.3 – Example of simultaneous degrading and derating . 41
Figure E.1 – Step 1: Calculation of wind speed based on working WEGS 1 to n . 93
Figure E.2 – Step 2: Estimation of lost production for WEGS not in FULL
PERFORMANCE . 94
Table C.1 – Example of mapping of available and unavailable information categories . 43
Table D.1 – Verification scenarios – time allocation to information categories . 50
Table D.2 – Verification scenarios – communication aspects . 51
Table D.3 – Verification scenarios – partial operational aspects . 52
Table D.4 – Verification scenarios – maintenance aspects . 53
Table D.5 – Verification scenarios – operational aspects . 54
Table D.6 – Verification scenarios – grid / electrical network aspects . 57
Table D.7 – Verification scenarios – environmental aspects . 58
Table D.8 – FULL PERFORMANCE: By definition, actual energy production is equal to
the potential energy production . 60
Table D.9 – FULL PERFORMANCE: Actual energy production is less than potential
energy production but within agreed uncertainty . 61
Table D.10 – FULL PERFORMANCE: Actual energy production greater than potential
energy production . 61
Table D.11 – PARTIAL PERFORMANCE – derated: Grid constraint . 62
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Table D.12 – PARTIAL PERFORMANCE – derated: Grid constraint, actual energy
production less than requested . 62
Table D.13 – Partial performance – derated: Output constraint due to excessive noise
of the WTGS . 63
Table D.14 – PARTIAL PERFORMANCE – derated: Dirt on blades constrained
performance . 63
Table D.15 – PARTIAL PERFORMANCE – derated: Ice accumulated on blades has
been detected, WTGS is allowed to operate although the power performance is
‘derated’ . 64
Table D.16 – PARTIAL PERFORMANCE – degraded: WTGS deterioration known to the
WTGS user . 64
Table D.17 – READY STANDBY: Avian detection system . 64
Table D.18 – READY STANDBY: Automatic generation control – Var
...
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