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BS EN IEC 61400-26-1:2019

BS EN IEC 61400-26-1:2019

$215.11

Wind energy generation systems – Availability for wind energy generation systems

Published By Publication Date Number of Pages
BSI 2019 104
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IEC 61400-26-1:2019 defines an information model from which time-based, and production-based availability indicators for services can be derived and reported. The purpose is to provide standardised metrics that can be used to create and organise methods for availability calculation and reporting according to the user’s needs. The document provides information categories, which unambiguously describe how data is used to characterise and categorise the operation. The information model specifies category priority for discrimination between possible concurrent categories. Further, the model defines entry and exit criteria to allocate fractions of time and production values to the proper information category. A full overview of all information categories, exit and entry criteria is given in Annex. The document can be applied to any number of WTGSs, whether represented by an individual turbine, a fleet of wind turbines, a wind power station or a portfolio of wind power stations. A wind power station is typically made up of all WTGSs, functional services and balance of plant elements as seen from the point of common coupling. This first edition cancels and replaces IEC TS 61400-26-1:2011, IEC TS 61400-26-2:2014 and IEC TS 61400-26-3:2016.

PDF Catalog

PDF Pages PDF Title
2 National foreword
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
13 FOREWORD
15 INTRODUCTION
Figures
Figure 1 – Data stakeholders for a wind energy generation system
17 1 Scope
2 Normative references
18 3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
20 3.2 Abbreviated terms
23 4 Information model
4.1 Basic model
4.2 Information categories
24 4.3 Information category priority
Figure 2 – Information category overview
25 4.4 Services
Figure 3 – Information category priority
26 4.5 Service delivery layers
4.5.1 General
4.5.2 Time layer
4.5.3 Actual service delivery layer
4.5.4 Potential service delivery layer
Figure 4 – Three-layer information model
27 4.5.5 Lost service
4.6 Modelling multiple services
28 Figure 5 – Information categories, definitions for layer 2 and layer 3,mandatory categories
29 4.7 Determination of information categories for the WPS
Figure 6 – Examples of an information model representing active energy,reactive energy, high and low frequency response services
30 4.8 Application of the information model to components of the WEGS
5 Information categories
5.1 INFORMATION AVAILABLE
31 5.2 OPERATIVE
5.3 IN SERVICE
5.3.1 General
5.3.2 FULL PERFORMANCE
32 5.3.3 PARTIAL PERFORMANCE
5.3.4 READY STANDBY
33 5.4 OUT OF SERVICE
5.4.1 General
5.4.2 TECHNICAL STANDBY
5.4.3 OUT OF ENVIRONMENTAL SPECIFICATION
34 5.4.4 REQUESTED SHUTDOWN
5.4.5 OUT OF ELECTRICAL SPECIFICATION
35 5.5 NON-OPERATIVE
5.5.1 General
5.5.2 SCHEDULED MAINTENANCE
5.5.3 PLANNED CORRECTIVE ACTION
36 5.5.4 FORCED OUTAGE
5.5.5 SUSPENDED
37 5.6 FORCE MAJEURE
5.7 INFORMATION UNAVAILABLE
38 Annex A (informative)Entry and exit conditions overview for WEGS
Figure A.1 – Overview of the entry and exit conditions of all mandatory information categories described in this document
39 Annex B (informative)Optional information categories for WEGS information model –illustrative explanation and examples
B.1 General
B.2 PARTIAL PERFORMANCE – optional categories
B.2.1 Introduction of optional categories
B.2.2 Derated
40 B.2.3 Degraded
Figure B.1 – Information category overview – mandatory and optional
41 B.3 OUT OF ENVIRONMENTAL SPECIFICATION – optional categories
B.3.1 Introduction of optional categories
B.3.2 Calm winds
B.3.3 Other environmental
42 B.4 PLANNED CORRECTIVE ACTION – optional categories
B.4.1 Introduction of optional categories
B.4.2 Retrofit
B.4.3 Upgrade
B.4.4 Other planned corrective action
43 B.5 FORCED OUTAGE – optional category
B.5.1 Introduction of optional categories
B.5.2 Response
Figure B.2 – Workflow breakdown structure
44 B.5.3 Diagnostic
B.5.4 Logistic
B.5.5 Repair
45 B.6 SUSPENDED – optional categories
B.6.1 Introduction of optional categories
B.6.2 Suspended scheduled maintenance
B.6.3 Suspended planned corrective action
B.6.4 Suspended forced outage
46 B.7 Considerations of competing assignment of lost service
Figure B.3 – Example of simultaneous degrading and derating
47 Annex C (informative)Examples of availability indicators
C.1 General
C.1.1 Introduction to the scope of this annex
C.1.2 Time-based availability
C.1.3 Production-based availability
48 C.1.4 Mapping of availability and unavailability
C.2 Time-based availability
C.2.1 General
C.2.2 Time-based availability – "operational availability"
Tables
Table C.1 – Example of mapping of available and unavailableinformation categories
50 C.2.3 Time based availability – "technical availability"
51 C.3 Production-based availability
C.3.1 General
C.3.2 Production-based availability – "operational availability"
52 C.3.3 Production-based availability – "technical availability"
53 C.4 Capacity factor and other performance indicators
C.4.1 General
54 C.4.2 Capacity factor
C.4.3 Production ratio
C.4.4 Mean-value based information
55 Annex D (informative)Verification scenarios – examples
D.1 General
D.2 Time-based scenarios for a WTGS
D.2.1 Introduction to verification scenarios
Table D.1 – Verification scenarios – time allocation to information categories
56 D.2.2 Scenario 1 – communication aspects
Table D.2 – Verification scenarios – communication aspects
57 D.2.3 Scenario 2 – partial operational aspects
Table D.3 – Verification scenarios – partial operational aspects
58 D.2.4 Scenario 3 – maintenance aspects
Table D.4 – Verification scenarios – maintenance aspects
59 D.2.5 Scenario 4 – operational aspects
Table D.5 – Verification scenarios – operational aspects
62 D.2.6 Scenario 5 – grid/electrical network aspects
Table D.6 – Verification scenarios – grid / electrical network aspects
63 D.2.7 Scenario 6 – environmental aspects
Table D.7 – Verification scenarios – environmental aspects
65 D.3 Production-based scenarios for a WTGS
D.3.1 Introduction to verification scenarios
D.3.2 Scenarios under FULL PERFORMANCE
Table D.8 – FULL PERFORMANCE: by definition, actual energyproduction is equal to the potential energy production
66 Table D.9 – FULL PERFORMANCE: actual energy production is less than potential energy production but within agreed uncertainty
Table D.10 – FULL PERFORMANCE: actual energy productiongreater than potential energy production
67 D.3.3 Scenarios under PARTIAL PERFORMANCE
Table D.11 – PARTIAL PERFORMANCE – derated: grid constraint
Table D.12 – PARTIAL PERFORMANCE – derated: grid constraint,actual energy production less than requested
68 Table D.13 – Partial performance – derated: output constraintdue to excessive noise of the WTGS
Table D.14 – PARTIAL PERFORMANCE – derated:dirt on blades constrained performance
69 D.3.4 Scenarios under READY STANDBY
Table D.15 – PARTIAL PERFORMANCE – derated: ice accumulated on blades has been detected, WTGS is allowed to operate although the power performance is ‘derated’
Table D.16 – PARTIAL PERFORMANCE – degraded:WTGS deterioration known to the WTGS user
Table D.17 – READY STANDBY: avian detection system
70 D.3.5 Scenarios under TECHNICAL STANDBY
Table D.18 – READY STANDBY: Automatic generation control – var support
Table D.19 – TECHNICAL STANDBY: WTGS is cable unwinding
71 D.3.6 Scenarios under OUT OF ENVIRONMENTAL SPECIFICATION
Table D.20 – OUT OF ENVIRONMENTAL SPECIFICATION – calm winds
Table D.21 – OUT OF ENVIRONMENTAL SPECIFICATION – high winds
Table D.22 – OUT OF ENVIRONMENTAL SPECIFICATION – temperature too high
72 D.3.7 Scenarios under REQUESTED SHUTDOWN
Table D.23 – REQUESTED SHUTDOWN: ice on blades is detected and WTGS user requests shutdown of the WTGS
Table D.24 – REQUESTED SHUTDOWN: sector management
73 D.3.8 Scenarios under OUT OF ELECTRICAL SPECIFICATION
Table D.25 – REQUESTED SHUTDOWN: noise nuisance – warranty claim
Table D.26 – OUT OF ELECTRICAL SPECIFICATION: low voltage
74 D.3.9 Scenarios under SCHEDULED MAINTENANCE
D.3.10 Scenarios under PLANNED CORRECTIVE ACTION
Table D.27 – SCHEDULED MAINTENANCE: WTGS is under scheduled maintenance workby the WTGS manufacturer or maintenance provider within the time allowanceagreed by the maintenance contract
Table D.28 – PLANNED CORRECTIVE ACTION: WTGS manufacturer or maintenance provider performs corrective action to the WTGS at his discretion outside the time allowance of scheduled maintenance
75 D.3.11 Scenarios under FORCED OUTAGE
Table D.29 – FORCED OUTAGE: short circuit
Table D.30 – FORCED OUTAGE: corrosion
76 D.3.12 Scenarios under SUSPENDED
Table D.31 – FORCED OUTAGE: overheating
Table D.32 – SUSPENDED: suspended repair work due to storm with lightning
77 D.3.13 Scenarios under FORCE MAJEURE
D.4 Production-based scenarios for a WTGS – calculation of lost production
D.4.1 Introduction to verification scenarios
D.4.2 Production-based availability algorithm based on mandatory information categories ("operational availability")
Table D.33 – FORCE MAJEURE: no access to the WTGSdue to flooding impacting infrastructure
78 Table D.34 – Production-based availability algorithm based on mandatory information categories only,"operational availability"
80 D.4.3 Production-based availability algorithm – including optional categories ("technical availability")
Table D.35 – Production-based availability algorithm –including optional categories, "technical availability"
81 D.5 Production-based scenarios for a WPS
D.5.1 Introduction to verification scenarios
D.5.2 Example 1: Normal operation – all WPS
82 D.5.3 Example 2: Normal operation – part of WPS
Table D.36 – Scenario, Example 1: Normal operation – all WPS
83 D.5.4 Example 3: Contaminated WTGSs blades – all WPS
Table D.37 – Scenario, Example 2: Normal operation – part of WPS
84 D.5.5 Example 4: Contaminated WTGSs blades – part of WPS
Table D.38 – Scenario, Example 3: Contaminated WTGSs blades – all WPS
85 D.5.6 Example 5: BOP limitations – all WPS
Table D.39 – Scenario, Example 4: Contaminated WTGSs blades – part of WPS
86 D.5.7 Example 6: BOP limitations – part of WPS
Table D.40 – Scenario, Example 5: BOP limitations – all WPS
87 D.5.8 Example 7: "Spinning reserve" – part of WPS
Table D.41 – Scenario, Example 6: BOP limitations – part of WPS
88 D.5.9 Example 8: "Spinning reserve" – all WPS
Table D.42 – Scenario, Example 8: "Spinning reserve" – part of WPS
89 D.5.10 Example 9: Noise restrictions – warranty related
Table D.43 – Scenario, Example 7: "Spinning reserve" – all WPS
90 Table D.44 – Scenario, Example 9: Noise restrictions – all WPS
91 D.5.11 Example 10: Noise restrictions – environmentally related
Table D.45 – Scenario, Example 10: Noise restrictions – all WPS
92 D.5.12 Example 11: Ice storm on grid – all WPS
Table D.46 – Scenario, Example 11: Ice storm on grid – all WPS
94 Annex E (informative)Possible methods for determination of potential WEGS energy production
E.1 General
E.2 Specific power curve and velocities methods
E.2.1 General
E.2.2 Nacelle anemometer wind measurement with power curve
95 E.2.3 Upstream wind measurement with power curve
E.2.4 Met mast wind measurement with correction factors and power curve
96 E.3 Power-based methods
E.3.1 General
E.3.2 Average production of WPS
97 E.3.3 Average production of representative comparison WTGSs
98 E.3.4 Data acquisition with comparison chart/database
E.3.5 Average wind speed of WPS
Figure E.1 – Step 1: calculation of wind speed based on working WEGS 1 to n
99 E.4 Determination of potential production for a WPS – examples
E.4.1 Overview
E.4.2 Primary service
E.4.3 Secondary services
Figure E.2 – Step 2: estimation of lost productionfor WEGS not in FULL PERFORMANCE
100 Table E.1 – Examples on how to determine potential production
101 Annex F (informative)Balance of plant integration
F.1 WPS functions and services
F.2 Externally required functions and services
F.3 Internally required functions and services
102 F.4 Expansion of the information model for BOP functions and services
103 Bibliography

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BS EN IEC 61400-26-1:2019
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