Already a subscriber? 
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
PD IEC TS 61400-26-4:2024 Wind energy generation systems - Reliability for wind energy generation systems, 2024
- undefined
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Abbreviated terms
- 4 Preamble
- 5 Reliability terms derived from the information model [Go to Page]
- 5.1 Information categories applied in reliability metrics
- 5.2 Derivation of parameters for reliability metrics [Go to Page]
- 5.2.1 General
- 5.2.2 Additional state information required
- Figures [Go to Page]
- Figure 1 – IEC 61400-26-1 information model [Go to Page]
- 5.2.3 Reliability terms derived from information categories – normative levels
- Figure 2 – Reliability terms derived from the information model – normative levels [Go to Page]
- 5.2.4 Reliability terms derived from the information model – optional levels
- 5.2.5 Failure frequency and other aggregated reliability terms
- 5.3 Applicability to WEGS, systems and components
- Annex A (informative) Illustrative examples [Go to Page]
- A.1 Scenario 1 – Determination of MFDT, MRT, MTD, MTBF and MDT for reporting reliability
- Tables [Go to Page]
- Table A.1 – Registration of FDT, RT, TD, TBF and DT
- A.2 Scenario 2 – Incorporation of transitions to SCHEDULED MAINTENANCE and PLANNED CORRECTIVE ACTION in the aggregated TTF counter stop criteria
- Figure A.1 – Examples of transitions from IN SERVICE
- Figure A.2 – Illustration of the transition sequences in scenario 2 and 3
- Table A.2 – Scenario 2
- A.3 Scenario 3 – SCHEDULED MAINTENANCE and PLANNED CORRECTIVE ACTION not incorporated in the aggregated TTF counter stop criteria
- Table A.3 – Scenario 3
- Annex B (informative) Reliability engineering considerations [Go to Page]
- B.1 General
- B.2 Reliability
- Figure B.1 – The information model as input provider for statistical analysis
- Figure B.2 – Reliability terms derived from the information model – including optional levels
- B.3 Serviceability
- Figure B.3 – Serviceability terms derived from the information model – including optional levels
- B.4 RAM
- Annex C (informative) Illustration of the approach used at component level [Go to Page]
- Figure C.1 – Illustration of break-down to component level
- Annex D (informative) Considerations on different needs for reporting reliability [Go to Page]
- 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)
- Figure D.2 – Example of a system approach leaving a mandatory category (IAOSPP) in ambiguity
- Figure D.3 – Example of system approach only considering FORCED OUTAGE (IANOFO and SUSPENDED (IANOS) as downtime
- 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
- Figure D.6 – Example of system approach defining only FORCED OUTAGE, SUSPENDED and FORCE MAJEURE situations to be 'system down-time'
- Bibliography [Go to Page]
