This part of IEC 61400 provides a framework from which production-based performance indicators of a WTGS (wind turbine generator system) can be derived. It unambiguously describes how data is categorised and provides examples of how the data can be used to derive performance indicators.<\/p>\n
The approach of this part of IEC 61400 is to expand the time allocation model, introduced in IEC TS 61400-26-1, with two additional layers for recording of the actual energy production and potential energy production associated with the concurrent time allocation.<\/p>\n
It is not the intention of this Technical Specification to define how 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.<\/p>\n
This document also includes informative annexes with:<\/p>\n
examples of determination of lost production,<\/p>\n<\/li>\n
examples of algorithms for production-based indicators,<\/p>\n<\/li>\n
examples of other performance indicators,<\/p>\n<\/li>\n
examples of application scenarios.<\/p>\n<\/li>\n<\/ul>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 3.2 Abbreviations 3.2.1 Information available <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 3.2.2 Information unavailable <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4 Information model 4.1 General Figures Figure 1 \u2013 Information category overview <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure 2 \u2013 Extended information category model <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 4.2 Allocation of production terms to the information categories Figure 3 \u2013 Information categories, addition of layer 2 and layer 3, mandatory categories <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 4.3 Mean-value based information 4.4 Limitations 4.5 Entry and exit points <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 4.6 Information category priority <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex A (informative) Possible methods for the determination of potential energy production A.1 General A.2 Specific power curve and velocities methods A.2.1 General A.2.2 Nacelle anemometer wind measurement with power curve <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | A.2.3 Upstream wind measurement with power curve A.2.4 Met mast wind measurement with correction factors and power curve <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | A.3 Power-based methods A.3.1 General A.3.2 Average production of wind farm <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | A.3.3 Average production of representative comparison turbines <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | A.3.4 Data acquisition with comparison chart\/database A.3.5 Average wind speed of wind farm <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure A.1 \u2013 Step 1: Calculation of wind speed based on working wind turbine 1 to n Figure A.2 \u2013 Step 2: Estimation of lost production for WTGS not in FULL PERFORMANCE <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Annex B (informative) Production-based availability indicators \u2013 examples B.1 General B.2 System operational production-based availability (\u201cWTGS user\u2019s view\u201d) B.2.1 General B.2.2 System operational production-based availability algorithm based on mandatory information categories only <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | B.2.3 Turbine operational production-based availability algorithm \u2013 including optional information categories <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | B.3 Technical production-based availability (\u201cWTGS manufacturer\u2019s view\u201d) B.3.1 General B.3.2 Technical production-based availability based on mandatory information categories only <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex C (informative) Capacity factor and other performance indicators C.1 General C.2 Capacity factor <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | C.3 Production ratio <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex D (informative) Verification scenarios \u2013 examples D.1 General D.2 Application scenarios D.2.1 General D.2.2 Scenarios under FULL PERFORMANCE Tables Table D.1 \u2013 FULL PERFORMANCE: By definition, actual energy production is equal to the potential energy production <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Table D.2 \u2013 FULL PERFORMANCE: Actual energy production is less than potential energy production <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | D.2.3 Scenarios under PARTIAL PERFORMANCE Table D.3 \u2013 FULL PERFORMANCE: Actual energy production greater than potential energy production Table D.4 \u2013 Partial performance \u2013 Derated: Grid constraint <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Table D.5 \u2013 Partial performance \u2013 Derated: Grid constraint, actual energy production less than potential energy production Table D.6 \u2013 Partial performance \u2013 Derated: Output constraint due to excessive noise from the WTGS <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Table D.7 \u2013 Partial performance \u2013 Derated: Dirt on blades constrained performance Table D.8 \u2013 Partial performance \u2013 Derated: Ice accumulated on blades has been detected and the WTGS is allowed to operate although the power performance is derated <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | D.2.4 Scenarios under TECHNICAL STANDBY D.2.5 Scenarios under OUT OF ENVIRONMENTAL SPECIFICATION Table D.9 \u2013 Partial performance \u2013 Degraded: WTGS deterioration known to the WTGS user Table D.10 \u2013 TECHNICAL STANDBY: WTGS is cable unwinding Table D.11 \u2013 Out of environmental specification: Calm winds <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | D.2.6 Scenarios under REQUESTED SHUTDOWN Table D.12 \u2013 Out of environmental specification: High winds Table D.13 \u2013 Out of environmental specification: Temperature too high Table D.14 \u2013 REQUESTED SHUTDOWN: Ice on blades is detected and WTGS user requests shutdown of the WTGS <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Table D.15 \u2013 Requested shutdown: Sector management Table D.16 \u2013 Requested shutdown: Noise nuisance <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | D.2.7 Scenarios under OUT OF ELECTRICAL SPECIFICATION D.2.8 Scenarios under SCHEDULED MAINTENANCE Table D.17 \u2013 Out of electrical specification: Low voltage Table D.18 \u2013 SCHEDULED MAINTENANCE: WTGS is under scheduled maintenance work by the WTGS manufacturer within the time allowance agreed by the maintenance contract <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | D.2.9 Scenarios under PLANNED CORRECTIVE ACTION D.2.10 Scenarios under FORCED OUTAGE Table D.19 \u2013 PLANNED CORRECTIVE ACTION: WTGS manufacturer performs corrective action to the WTGS at his discretion outside the time allowance of scheduled maintenance Table D.20 \u2013 Forced outage: Short circuit <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Table D.21 \u2013 Forced outage: Corrosion Table D.22 \u2013 Forced outage: Overheating <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | D.2.11 Scenarios under SUSPENDED D.2.12 Scenarios under FORCE MAJEURE Table D.23 \u2013 SUSPENDED: Suspended repair work due to storm with lightning Table D.24 \u2013 FORCE MAJEURE: no access to the WTGS due to flooding impacting infrastructure <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | D.3 Calculation of production-based availability indicators according to Annex B D.3.1 General D.3.2 System operational production-based availability algorithm based on mandatory information categories only (\u201cWTGS user\u2019s view\u201d) Table D.25 \u2013 System operational production-based availability algorithm based on mandatory information categories only (\u201cWTGS user\u2019s view\u201d) <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | D.3.3 Turbine operational production-based availability algorithm \u2013 including optional categories (\u201cWTGS user\u2019s view\u201d) <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Table D.26 \u2013 Turbine operational production-based availability algorithm \u2013 including optional categories (\u201cWTGS user\u2019s view\u201d) <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | D.3.4 Technical production-based availability based on mandatory information categories only (\u201cWTGS manufacturer’s view\u201d) Table D.27 \u2013 Technical production-based availability based on mandatory information categories only (\u201cWTGS manufacturer’s view\u201d) <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Annex E (informative) Considerations of competing assignment of lost production Figure E.1 \u2013 Example of simultaneous degrading and derating <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Wind turbines – Production-based availability for wind turbines<\/b><\/p>\n |