IEC TS 61400-26-1:2011

Wind turbines - Part 26-1: Time-based availability for wind turbine generating systems

IEC 61400-26-1:2011(E) defines generic information categories to which fractions of time can be assigned for a wind turbine generating system (WTGS) considering internal and external conditions based on fraction of time and specifying the following:
- generic information categories of a WTGS considering availability and other performance indicators;
- information category priority in order to discriminate between concurrent categories;
- entry and exit point for each information category in order to allocate designation of time;
- informative annexes providing various examples.

General Information

• Status: Replaced
• Publication Date: 13-Nov-2011
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: TC 88 - Wind energy generation systems
• Drafting Committee: WG 26 - TC 88/WG 26
• Current Stage: DELPUB - Deleted Publication
• Start Date: 30-Mar-2018
• Completion Date: 29-May-2019

Relations

• Revised: IEC 61400-26-1:2019 - Wind energy generation systems - Part 26-1: Availability for wind energy generation systems
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC/TS 61400-26-1 ®
Edition 1.0 2011-11
TECHNICAL
SPECIFICATION
colour
inside
Wind turbines –
Part 26-1: Time-based availability for wind turbine generating systems

IEC/TS 61400-26-1:2011(E)
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IEC/TS 61400-26-1 ®
Edition 1.0 2011-11
TECHNICAL
SPECIFICATION
colour
inside
Wind turbines –
Part 26-1: Time-based availability for wind turbine generating systems

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 27.180 ISBN 978-2-88912-780-1

– 2 – TS 61400-26-1 © IEC:2011(E)

CONTENTS
FOREWORD . 4

1 Scope . 7

2 Normative references . 7

3 Terms, definitions and abbreviations . 7

3.1 Terms and definitions . 7

3.2 Abbreviations . 8

4 Information model . 9

4.1 General . 9
4.2 Information categories . 9
4.3 Limitations . 9
4.4 Information category priority . 11
5 INFORMATION AVAILABLE . 12
5.1 OPERATIVE . 13
5.1.1 GENERATING . 13
5.1.2 NON-GENERATING . 15
5.2 NON-OPERATIVE . 20
5.2.1 SCHEDULED MAINTENANCE . 21
5.2.2 PLANNED CORRECTIVE ACTION . 22
5.2.3 FORCED OUTAGE . 23
5.2.4 SUSPENDED . 24
5.3 FORCE MAJEURE . 24
6 INFORMATION UNAVAILABLE . 25
Annex A (informative) Optional information categories – examples . 27
Annex B (informative) Time based availability indicators – examples . 40
Annex C (informative) Verification scenarios – examples . 44
Bibliography . 53

Figure 1 – Information category overview . 10
Figure 2 – Information category priority . 11
Figure 3 – INFORMATION AVAILABLE category . 12
Figure 4 – OPERATIVE category . 13

Figure 5 – GENERATING category . 14
Figure 6 – FULL PERFORMANCE category . 14
Figure 7 – PARTIAL PERFORMANCE category . 15
Figure 8 – NON GENERATING category . 16
Figure 9 – TECHNICAL STANDBY category . 17
Figure 10 – OUT OF ENVIRONMENTAL SPECIFICATION category . 18
Figure 11 – REQUESTED SHUTDOWN category . 19
Figure 12 – OUT OF ELECTRICAL SPECIFICATION category . 20
Figure 13 – NON-OPERATIVE category . 21
Figure 14 – SCHEDULED MAINTENANCE category . 22
Figure 15 – PLANNED CORRECTIVE ACTION category. 23
Figure 16 – FORCED OUTAGE category . 23

TS 61400-26-1 © IEC:2011(E) – 3 –

Figure 17 – SUSPENDED category . 24

Figure 18 – FORCE MAJEURE category . 25

Figure 19 – INFORMATION UNAVAILABLE category . 26

Figure A.1 – Information category overview – mandatory and optional . 28

Figure A.2 – Optional categories for PARTIAL PERFORMANCE . 29

Figure A.3 – Derated category . 30

Figure A.4 – Degraded category . 30

Figure A.5 – Optional categories for OUT OF ENVIRONMENTAL SPECIFICATION . 31

Figure A.6 – Calm winds category . 32
Figure A.7 – Other environmental category . 33
Figure A.8 – Optional categories for NON-OPERATIVE . 34
Figure A.9 – Optional categories for forced outage . 35
Figure A.10 – Workflow breakdown structure . 36
Figure A.11 – Optional categories for SUSPENDED. 38
Figure C.1 – Verification scenarios – time allocation to information categories . 44
Figure C.2 – Verification scenarios – communication aspects . 45
Figure C.3 – Verification scenarios – partial operational aspects . 46
Figure C.4 – Verification scenarios – maintenance aspects . 47
Figure C.5 – Verification scenarios – operational aspects . 49
Figure C.6 – Verification scenarios – grid / electrical network aspects . 50
Figure C.7 – Verification scenarios – environmental aspects . 52

– 4 – TS 61400-26-1 © IEC:2011(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
WIND TURBINES –
Part 26-1: Time-based availability for wind turbine generating systems

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