BSI PD IEC TS 61400-26-4:2024

$198.66

Wind energy generation systems – Reliability for wind energy generation systems

Published By	Publication Date	Number of Pages
BSI	2024	54

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PDF Catalog

PDF Pages	PDF Title
2	undefined
4	CONTENTS
6	FOREWORD
8	1 Scope 2 Normative references
9	3 Terms, definitions and abbreviated terms 3.1 Terms and definitions
11	3.2 Abbreviated terms
12	4 Preamble 5 Reliability terms derived from the information model 5.1 Information categories applied in reliability metrics
13	5.2 Derivation of parameters for reliability metrics 5.2.1 General
14	5.2.2 Additional state information required Figures Figure 1 – IEC 61400-26-1 information model
15	5.2.3 Reliability terms derived from information categories – normative levels
17	Figure 2 – Reliability terms derived from the information model – normative levels
18	5.2.4 Reliability terms derived from the information model – optional levels
19	5.2.5 Failure frequency and other aggregated reliability terms 5.3 Applicability to WEGS, systems and components
20	Annex A (informative) Illustrative examples A.1 Scenario 1 – Determination of MFDT, MRT, MTD, MTBF and MDT for reporting reliability Tables Table A.1 – Registration of FDT, RT, TD, TBF and DT
21	A.2 Scenario 2 – Incorporation of transitions to SCHEDULED MAINTENANCE and PLANNED CORRECTIVE ACTION in the aggregated TTF counter stop criteria
22	Figure A.1 – Examples of transitions from IN SERVICE
23	Figure A.2 – Illustration of the transition sequences in scenario 2 and 3
24	Table A.2 – Scenario 2
29	A.3 Scenario 3 – SCHEDULED MAINTENANCE and PLANNED CORRECTIVE ACTION not incorporated in the aggregated TTF counter stop criteria
30	Table A.3 – Scenario 3
35	Annex B (informative) Reliability engineering considerations B.1 General
36	B.2 Reliability Figure B.1 – The information model as input provider for statistical analysis
39	Figure B.2 – Reliability terms derived from the information model – including optional levels
41	B.3 Serviceability
44	Figure B.3 – Serviceability terms derived from the information model – including optional levels
45	B.4 RAM
46	Annex C (informative) Illustration of the approach used at component level
47	Figure C.1 – Illustration of break-down to component level
48	Annex D (informative) Considerations on different needs for reporting reliability D.1 Advantages by introducing optional information categories D.2 Discussion of allocations for different stakeholder scenarios Figure D.1 – Example of system approach only considering OPERATIVE (IAO), NON-OPERATIVE (IANO) and FORCE MAJEURE (IAFM)
49	Figure D.2 – Example of a system approach leaving a mandatory category (IAOSPP) in ambiguity
50	Figure D.3 – Example of system approach only considering FORCED OUTAGE (IANOFO and SUSPENDED (IANOS) as downtime
51	Figure D.4 – Example of system approach defining only active production situations to be ‘system up-time’, apart from requested shutdowns – to avoid ambiguity with the definitions for mandatory levels, introduction of level 5 is advised Figure D.5 – Example of system approach defining only FULL PERFORMANCE situations to be ‘system up-time’ – to avoid ambiguity with the definitions for mandatory levels, introduction of level 5 is advised
52	Figure D.6 – Example of system approach defining only FORCED OUTAGE, SUSPENDED and FORCE MAJEURE situations to be ‘system down-time’
53	Bibliography