Wind energy generation systems - Part 26-3: Availability for wind power stations (IEC/TS 61400-26-3:2016)

This part of IEC 61400, which is a technical specification, provides a framework from which
time-based and production-based availability indicators of a wind power station can be
derived. It unambiguously describes how data is categorised and provides examples of how
the data can be used to derive availability indicators.
The approach is to apply the terms and definitions for the applied information models
introduced in IEC TS 61400-26-1 and IEC TS 61400-26-2 to a wind power station.
The basic approach is based on the assumption that a wind power station may be modelled
as one 'WTGS' representing a complete wind power station. The wind power station is made
up of all WTGSs, functional services and balance of plant elements as seen from the point of
common coupling.
It is not the intention of this specification to define how time-based and production-based
availability shall be calculated. Nor is it the intention to form the basis for power curve
performance measurements – which is the objective of IEC 61400-12. However, the annexes
should be regarded as examples and guidelines for developing methods for calculation of
availability indicators.
This document also includes informative annexes with:
• examples of how to expand the model to more services,
• examples of how to determine the information category for the wind power station,
• examples of how to expand the model to balance of plant elements,
• examples of determination of lost production,
• examples of availability algorithms for production based indicators,
• examples of other availability indicators,
• examples of application scenarios.

Windenergieanlagen - Teil 26-3: Verfügbarkeit von Windenergieanlagen (IEC/TS 61400-26-3:2016)

Systèmes de production d'énergie éolienne - Partie 26-3: Disponibilité pour les centrales éoliennes (IEC/TS 61400-26-3:2016)

Sistemi za proizvodnjo energije na veter - 26-3. del: Razpoložljivost vetrnih elektrarn (IEC/TS 61400-26-3:2016)

ICS:   27.180
Ta del standarda IEC 61400, ki je tehnična specifikacija, zagotavlja okvir, iz katerega je mogoče izpeljati indikatorje razpoložljivosti vetrne elektrarne, ki temeljijo na času in proizvodnji. Nedvoumno opisuje, kako so podatki kategorizirani in ponuja primere, kako se lahko podatki uporabijo za pridobivanje kazalnikov razpoložljivosti.
Pristop je uporaba izrazov in definicij za uporabljene informacijske modele, uvedene v standardih IEC TS 61400-26-1 in IEC TS 61400-26-2, pri vetrni elektrarni.
Osnovni pristop temelji na predpostavki, da se lahko vetrna elektrarna oblikuje kot en »sistem za proizvodnjo vetrne turbine«, ki predstavlja popolno vetrno elektrarno. Vetrna elektrarna je sestavljena iz vseh sistemov za proizvodnjo vetrne turbine, funkcionalnih storitev in ravnovesja rastlinskih elementov, kot je razvidno iz skupne priključne točke.
Namen te specifikacije ni opredeliti, kako je treba izračunati razpoložljivost na podlagi časa in proizvodnje. Prav tako ni njen namen, da bi bila podlaga za meritve delovanja krivulje električne energije — kar je cilj standarda IEC 61400-12. Vendar naj bi dodatke obravnavali kot primere in smernice za razvoj metod za izračun indikatorjev razpoložljivosti.
Ta dokument vsebuje tudi informativne dodatke s:
• primeri, kako razširiti model na več storitev,
• primeri, kako določiti kategorijo informacij za vetrno elektrarno,
• primeri, kako razširiti model na ravnovesje rastlinskih elementov,
• primeri ugotavljanja izgubljene proizvodnje,
• primeri algoritmov razpoložljivosti za indikatorje, ki temeljijo na proizvodnji,
• primeri drugih indikatorjev razpoložljivosti,
• primeri scenarijev uporabe.

General Information

Status
Withdrawn
Publication Date
10-Sep-2017
Withdrawal Date
15-Aug-2022
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
29-Jul-2022
Due Date
21-Aug-2022
Completion Date
16-Aug-2022

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SLOVENSKI STANDARD
SIST-TS CLC/TS 61400-26-3:2017
01-oktober-2017
Sistemi za proizvodnjo energije na veter - 26-3. del: Razpoložljivost vetrnih
elektrarn (IEC/TS 61400-26-3:2016)
Wind energy generation systems - Part 26-3: Availability for wind power stations (IEC/TS
61400-26-3:2016)
Windenergieanlagen - Teil 26-3: Verfügbarkeit von Windenergieanlagen (IEC/TS 61400-
26-3:2016)
Systèmes de production d'énergie éolienne - Partie 26-3: Disponibilité pour les centrales
éoliennes (IEC/TS 61400-26-3:2016)
Ta slovenski standard je istoveten z: CLC/TS 61400-26-3:2017
ICS:
27.180 Vetrne elektrarne Wind turbine energy systems
SIST-TS CLC/TS 61400-26-3:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CLC/TS 61400-26-3:2017

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SIST-TS CLC/TS 61400-26-3:2017


TECHNICAL SPECIFICATION CLC/TS 61400-26-3

SPÉCIFICATION TECHNIQUE

TECHNISCHE SPEZIFIKATION
September 2017
ICS 27.180

English Version
Wind energy generation systems -
Part 26-3: Availability for wind power stations
(IEC/TS 61400-26-3:2016)
Systèmes de production d'énergie éolienne -  Windenergieanlagen -
Partie 26-3: Disponibilité pour les centrales éoliennes Teil 26-3: Verfügbarkeit von Windenergieanlagen
(IEC/TS 61400-26-3:2016) (IEC/TS 61400-26-3:2016)
This Technical Specification was approved by CENELEC on 2017-07-17.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

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: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. CLC/TS 61400-26-3:2017 E

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SIST-TS CLC/TS 61400-26-3:2017
CLC/TS 61400-26-3:2017
European foreword
This document (CLC/TS 61400-26-3:2017) consists of the text of IEC/TS 61400-26-3:2016 prepared
by IEC/TC 88 "Wind energy generation systems".
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/TS 61400-26-3:2016 was approved by CENELEC as a
Technical Specification without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61400-1 NOTE Harmonized as EN 61400-1.
IEC 61400-12-1:2005 NOTE Harmonized as EN 61400-12-1:2006 (not modified).
IEC 61400-12-2:2013 NOTE Harmonized as EN 61400-12-2:2013 (not modified).
IEC 61400-25-1:2006 NOTE Harmonized as EN 61400-25-1:2007 (not modified).
IEC 61400-25-2:2015 NOTE Harmonized as EN 61400-25-2:2015 (not modified).
IEC 61400-25-3:2015 NOTE Harmonized as EN 61400-25-3:2015 (not modified).
IEC 61400-25-4:2008 NOTE Harmonized as EN 61400-25-4:2008 (not modified).
IEC 61400-25-5:2006 NOTE Harmonized as EN 61400-25-5:2007 (not modified).
IEC 61400-25-6:2010 NOTE Harmonized as EN 61400-25-6:2011 (not modified).
2

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SIST-TS CLC/TS 61400-26-3:2017
CLC/TS 61400-26-3:2017
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 When 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 series International Electrotechnical - -
Vocabulary
IEC 60050-415 -  International Electrotechnical - -
Vocabulary - Part 415: Wind turbine
generator systems
IEC/TS 61400-26-1 2011 Wind turbines - Part 26-1: Time-based CLC/TS 61400-26-1 2017
availability for wind turbine generating
systems
IEC/TS 61400-26-2 2014 Wind turbines - Part 26-2: Production- CLC/TS 61400-26-2 2017
based availability for wind turbines

3

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SIST-TS CLC/TS 61400-26-3:2017

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SIST-TS CLC/TS 61400-26-3:2017




IEC TS 61400-26-3

®


Edition 1.0 2016-08




TECHNICAL



SPECIFICATION









colour

inside










Wind energy generation systems –

Part 26-3: Availability for wind power stations



























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 27.180 ISBN 978-2-8322-3572-0



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


® Registered trademark of the International Electrotechnical Commission

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SIST-TS CLC/TS 61400-26-3:2017
– 2 – IEC TS 61400-26-3:2016 © IEC 2016
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 12
2 Normative references. 12
3 Terms, definitions and abbreviations . 13
3.1 Terms and definitions . 13
3.2 Abbreviations for ‘Information available’ . 14
3.3 Abbreviations for ‘Information unavailable’ . 16
4 Information model for WPS . 17
4.1 General . 17
4.2 Services . 18
4.3 Information category priority . 20
4.4 Information model for BOP . 20
5 INFORMATION AVAILABLE (WPS) . 21
5.1 General . 21
5.2 OPERATIVE . 22
5.3 IN SERVICE . 23
5.3.1 General . 23
5.3.2 FULL PERFORMANCE . 24
5.3.3 PARTIAL PERFORMANCE . 25
5.3.4 READY STANDBY . 25
5.4 OUT OF SERVICE . 26
5.4.1 General . 26
5.4.2 TECHNICAL STANDBY . 27
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 . 31
5.5.3 PLANNED CORRECTIVE ACTION . 32
5.5.4 FORCED OUTAGE . 32
5.5.5 SUSPENDED . 33
5.6 FORCE MAJEURE . 34
6 INFORMATION UNAVAILABLE (WPS) . 35
Annex A (informative) Entry and Exit condition overview . 37
Annex B (informative) Application scenarios – examples . 38
B.1 Overview. 38
B.2 Application scenarios . 38
B.2.1 Example 1: Normal operation – all WPS . 38
B.2.2 Example 2: Normal operation – part of WPS . 39
B.2.3 Example 3: Dirty WTGSs blades – all WPS . 40
B.2.4 Example 4: Dirty WTGSs blades – part of WPS . 41
B.2.5 Example 5: BOP limitations – all WPS . 42
B.2.6 Example 6: BOP limitations – part of WPS . 43

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IEC TS 61400-26-3:2016 © IEC 2016 – 3 –
B.2.7 Example 7: ‘Spinning reserve’ – all WPS . 44
B.2.8 Example 8: ‘Spinning reserve’ – part of WPS . 46
B.2.9 Example 9: Noise restrictions – Warranty related . 47
B.2.10 Example 10: Noise restrictions – environmentally related . 48
B.2.11 Example 11: Ice storm on Grid – all WPS . 49
Annex C (informative) Balance of plant integration . 51
C.1 WPS functions and services . 51
C.2 Externally required functions and services . 51
C.3 Internally required functions and services . 51
C.4 Expansion of the Information Model for BOP functions and services . 51
Annex D (informative) Determination of potential production for a WPS – examples . 53
D.1 Overview. 53
D.2 Primary service . 53
D.3 Secondary services . 53
Annex E (informative) Service availability indicators – examples . 55
E.1 Overview. 55
E.2 Time based WPS availability . 55
E.2.1 General . 55
E.2.2 Operational service availability (“TSO’s view”) . 55
E.2.3 Operational service availability (“WPS operator’s view”) . 56
E.2.4 Technical service availability (“WPS maintenance provider’s view”) . 57
E.3 Production-based service availability indicators – examples . 58
E.3.1 Overview . 58
E.3.2 System operational production-based availability (“WPS operator’s
view”) . 58
E.3.3 System operational production-based availability (“TSO’s view”) . 59
E.3.4 System operational production-based availability (“WPS maintenance
provider’s view”) . 60
Annex F (informative) Examples of optional level 5 categories . 62
F.1 Overview. 62
F.2 Example of level 5 definitions . 62
F.2.1 General . 62
F.2.2 NOT CURTAILED . 64
F.2.3 NOT CURTAILED – WARNING . 65
F.2.4 UP-RATED . 66
F.2.5 DERATED – OTHER . 66
F.2.6 DERATED – GRID WPS OPERATOR . 67
F.2.7 DERATED – GRID TSO. 68
F.2.8 DERATED – GRID CONTROL . 69
F.2.9 DERATED – NOISE . 70
F.2.10 DERATED – TEMPERATURE . 71
F.2.11 DERATED – STRUCTURAL LOAD . 72
F.2.12 DERATED – WIND . 73
F.2.13 DEGRADED – OTHER . 74
F.2.14 DEGRADED – DIAGNOSTIC . 75
F.2.15 DEGRADED – NOISE . 76
F.2.16 DEGRADED – COMPONENT . 77
F.2.17 DEGRADED – TEMPERATURE . 78
F.2.18 DEGRADED – STRUCTURAL LOAD . 79

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F.2.19 OTHER READY STANDBY . 80
F.2.20 OTHER TECHNICAL STANDBY . 81
F.2.21 LUBRICATION . 81
F.2.22 DE-ICING . 82
F.2.23 DRY OUT . 82
F.2.24 CABLE UNTWIST . 83
F.2.25 OTHER ENVIRONMENTAL . 84
F.2.26 CALM WINDS . 84
F.2.27 HIGH WIND . 85
F.2.28 TEMPERATURE . 85
F.2.29 OTHER REQUESTED SHUTDOWN . 86
F.2.30 ENVIRONMENTAL . 86
F.2.31 GRID – WPS OPERATOR . 87
F.2.32 GRID – TSO . 88
F.2.33 NOISE . 88
F.2.34 FLICKER . 89
F.2.35 WILDLIFE . 90
F.2.36 STRUCTURAL LOAD . 90
F.2.37 OTHER OUT OF ELECTRICAL SPECIFICATION . 91
F.2.38 FREQUENCY . 92
F.2.39 VOLTAGE LEVEL LOW . 92
F.2.40 VOLTAGE LEVEL HIGH . 93
F.2.41 ASYMMETRY . 93
F.2.42 SCHEDULED MAINTENANCE . 94
F.2.43 OTHER CORRECTIVE ACTION . 94
F.2.44 UPGRADE . 95
F.2.45 INSPECTIONS . 95
F.2.46 RETROFIT . 96
F.2.47 REPAIR WORK . 96
F.2.48 OTHER FORCED OUTAGE . 97
F.2.49 FAILURE REPAIR . 97
F.2.50 DIAGNOSTIC . 98
F.2.51 LOGISTIC WPS MAINTENANCE PROVIDER . 99
F.2.52 LOGISTIC WPS OPERATOR . 99
F.2.53 RESPONSE WPS MAINTENANCE PROVIDER . 100
F.2.54 RESPONSE WPS OPERATOR . 101
F.2.55 OTHER SUSPENDED – SCHEDULED MAINTENANCE . 101
F.2.56 PERSONNEL SAFETY – SCHEDULED MAINTENANCE . 102
F.2.57 ENVIRONMENT – SCHEDULED MAINTENANCE . 103
F.2.58 IT ACCESS – SCHEDULED MAINTENANCE . 104
F.2.59 OTHER SUSPENDED – PLANNED CORRECTIVE ACTION . 105
F.2.60 PERSONNEL SAFETY – PLANNED CORRECTIVE ACTION . 106
F.2.61 ENVIRONMENT – PLANNED CORRECTIVE ACTION . 107
F.2.62 IT ACCESS – PLANNED CORRECTIVE ACTION . 108
F.2.63 OTHER SUSPENDED – FORCED OUTAGE . 109
F.2.64 PERSONNEL SAFETY – FORCED OUTAGE . 110
F.2.65 ENVIRONMENT – FORCED OUTAGE . 111
F.2.66 IT ACCESS – FORCED OUTAGE . 112
F.2.67 INACTIVE RESERVE . 113

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SIST-TS CLC/TS 61400-26-3:2017
IEC TS 61400-26-3:2016 © IEC 2016 – 5 –
F.2.68 MOTHBALLED . 114
F.2.69 RETIRED . 115
F.2.70 FORCE MAJEURE . 116
F.2.71 INFORMATION UNAVAILABLE . 117
Bibliography . 118

Figure 1 – Data stakeholders for a wind power station . 10
Figure 2 – Information category overview for a WPS . 17
Figure 3 – Example of a model split-up in active power, reactive power high and low
frequency compensation services . 19
Figure 4 – Information category priority for WPS . 20
Figure 5 – Mandatory INFORMATION AVAILABLE categories for WPS . 22
Figure 6 – OPERATIVE category . 23
Figure 7 – IN SERVICE category . 24
Figure 8 – FULL PERFORMANCE category . 24
Figure 9 – PARTIAL PERFORMANCE category . 25
Figure 10 – READY STANDBY category . 26
Figure 11 – OUT OF SERVICE category . 27
Figure 12 – TECHNICAL STANDBY category . 28
Figure 13 – OUT OF ENVIRONMENTAL SPECIFICATION category . 28
Figure 14 – REQUESTED SHUTDOWN category . 29
Figure 15 – OUT OF ELECTRICAL SPECIFICATION category . 30
Figure 16 – NON-OPERATIVE category . 31
Figure 17 – SCHEDULED MAINTENANCE category . 31
Figure 18 – PLANNED CORRECTIVE ACTION category . 32
Figure 19 – FORCED OUTAGE category . 33
Figure 20 – SUSPENDED category . 34
Figure 21 – FORCE MAJEURE category . 35
Figure 22 – INFORMATION UNAVAILABLE category . 36
Figure A.1 – Overview of the entry and exit conditions of all mandatory information
categories described in this document . 37

Table B.1 – Scenario, Example 1: Normal operation – all WPS . 38
Table B.2 – Scenario, Example 2: Normal operation – part of WPS . 39
Table B.3 – Scenario, Example 3: Dirty WTGSs blades – all WPS . 41
Table B.4 – Scenario, Example 4: Dirty WTGSs blades – part of WPS . 42
Table B.5 – Scenario, Example 5: BOP limitations – all WPS . 43
Table B.6 – Scenario, Example 6: BOP limitations – part of WPS . 44
Table B.7 – Scenario, Example 7: ‘Spinning reserve’ – all WPS . 45
Table B.8 – Scenario, Example 8: ‘Spinning reserve’ – part of WPS . 46
Table B.9 – Scenario, Example 9: Noise restrictions – all WPS . 47
Table B.10 – Scenario, Example 10: Noise restrictions – all WPS . 48
Table B.11 – Scenario, Example 11: Ice storm on Grid – all WPS . 49
Table D.1 – Examples on how to determine Potential production . 54

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SIST-TS CLC/TS 61400-26-3:2017
– 6 – IEC TS 61400-26-3:2016 © IEC 2016
Table F.1 – Example of level 5 definitions . 62
Table F.2 – NOT CURTAILED category . 65
Table F.3 – NOT CURTAILED – WARNING category . 65
Table F.4 – UP-RATED category . 66
Table F.5 – DERATED – OTHER category . 67
Table F.6 – DERATED – GRID WPS OPERATOR category . 68
Table F.7 – DERATED – GRID TSO category . 69
Table F.8 – DERATED – GRID CONTROL category . 70
Table F.9 – DERATED – NOISE category . 71
Table F.10 – DERATED – TEMPERATURE category . 72
Table F.11 – DERATED – STRUCTURAL LOAD category . 73
Table F.12 – DERATED – WIND category . 74
Table F.13 – DEGRADED – OTHER category . 75
Table F.14 – DEGRADED – DIAGNOSTIC category . 76
Table F.15 – DEGRADED – NOISE category . 77
Table F.16 – DEGRADED – COMPONENT category . 78
Table F.17 – DEGRADED – TEMPERATURE category . 79
Table F.18 – DEGRADED – STRUCTURAL LOAD category . 80
Table F.19 – OTHER READY STANDBY category . 81
Table F.20 – OTHER TECHNICAL STANDBY category . 81
Table F.21 – LUBRICATION category . 82
Table F.22 – DE-ICING category . 82
Table F.23 – DRY OUT category . 83
Table F.24 – CABLE UNTWIST category . 83
Table F.25 – OTHER ENVIRONMENTAL category . 84
Table F.26 – CALM WINDS category .
...

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