EN IEC 61400-1:2019/prA1:2023
(Amendment)Wind energy generation systems - Part 1: Design requirements - Amendment 1
Wind energy generation systems - Part 1: Design requirements - Amendment 1
Windenergieanlagen - Teil 1: Auslegungsanforderungen
Systèmes de génération d'énergie éolienne - Partie 1: Exigences de conception
Sistemi za proizvodnjo energije na veter - 1. del: Zahteve za načrtovanje - Dopolnilo A1
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2024
Sistemi za proizvodnjo energije na veter - 1. del: Zahteve za načrtovanje -
Dopolnilo A1
Wind energy generation systems - Part 1: Design requirements - Amendment 1
Windenergieanlagen - Teil 1: Auslegungsanforderungen
Systèmes de génération d'énergie éolienne - Partie 1: Exigences de conception
Ta slovenski standard je istoveten z: EN IEC 61400-1:2019/prA1:2023
ICS:
27.180 Vetrne elektrarne Wind turbine energy systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
88/982/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61400-1/AMD1 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-11-03 2024-01-26
SUPERSEDES DOCUMENTS:
88/961/RR
IEC TC 88 : WIND ENERGY GENERATION SYSTEMS
SECRETARIAT: SECRETARY:
Denmark Mrs Christine Weibøl Bertelsen
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for Vote
(CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clauses to
be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC clauses.
(See AC/22/2007 or NEW GUIDANCE DOC).
TITLE:
Amendment 1 – Wind energy generation systems – Part 1: Design requirements
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
88/982/CDV – 2 – IEC CDV 61400-1:2019/
AMD1 © IEC 2023
CONTENTS
FOREWORD . 3
1 Normative references . 5
2 Terms and definitions . 5
3 Symbols and abbreviated terms . 5
6.3 Wind conditions . 6
6.3.1 General . 6
6.3.3.2 Extreme wind speed model (EWM) . 8
7.4.1 General . 8
7.4.7 Parked (standstill or idling) (DLC 6.1 to 6.4) . 8
7.6.1.3 Partial safety factor for consequences of failure and component classes . 9
7.6.2.2 Partial safety factors for loads . 9
7.6.2.4 Partial safety factors for resistances where recognized design codes are not
available . 9
7.6.2.5 Partial safety factors for materials where recognized design codes are
available . 9
7.6.3.4 Partial material factors where recognized design codes are available . 9
10.12 Electro Magnetic Compatibility (EMC) . 11
10.12.1 Introduction . 11
10.12.2 EMC design requirements . 11
11.3.2 Wind condition parameters . 12
11.3.4 Data evaluation . 12
11.9.2 Assessment of the fatigue load suitability by reference to wind data . 12
11.9.3 Assessment of the ultimate load suitability by reference to wind data . 13
11.10 Assessment of structural integrity by load calculations with reference to site-
specific conditions . 14
Annex B . 14
B.1 General . 14
B.2 Power production (DLC 1.1 to 1.9) . 15
Annex E . 15
L.2 Ice mass effects on wind turbine blades . 16
L.4 Reference documents and bibliography . 17
Annex N . 17
N.1 General . 17
N.2 Reference documents and bibliography. 18
IEC CDV 61400-1:2019/ – 3 – 88/982/CDV
AMD1 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WIND TURBINES –
Part 1: Design Requirements
AMENDMENT 1
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 61400-1:2019 has been prepared by IEC technical committee 88: Wind
energy generation systems.
The text of this Amendment is based on the following documents:
Draft Report on voting
XX/XX/XXXX XX/XX/XXX
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.
88/982/CDV – 4 – IEC CDV 61400-1:2019/
AMD1 © IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC CDV 61400-1:2019/ – 5 – 88/982/CDV
AMD1 © IEC 2023
1 1 Normative references
2 2 Terms and definitions
3 For the purposes of this document, the terms and definitions given in IEC 61400-1:2019 and
4 the following apply.
5 ISO and IEC maintain terminological databases for use in standardization at the following
6 addresses:
7 • IEC Electropedia: available at http://www.electropedia.org/
8 • ISO Online browsing platform: available at http://www.iso.org/obp
9 Add
10 damage equivalent load
11 Constant amplitude load derived from the load spectrum and a given S-N curve exponent that
12 results in an equivalent fatigue damage
13 reference loads
14 The loads that had been utilised for detailed structural verification of the wind turbine
15 components are called reference loads.
16 serviceability
17 ability of a structure or structural element to perform adequately for normal use under all
18 expected actions
19 serviceability limit state
20 state which corresponds to conditions beyond which specified service requirements for a
21 structure or structural element are no longer met
22 S1 - SLS characteristic load
23 serviceability limit state load level equal to the characteristic value of the loads from ultimate
24 limit states classified as N (Normal)
-4
26 S2 - SLS 10 frequent load case
-4
27 serviceability limit state load level for frequent actions, which are exceeded for 10 of the
28 lifetime,
-2
29 S3 - SLS 10 frequent load case
30 serviceability limit state load level for the equivalent to frequent actions, which are exceeded
-2
31 for 10 of the lifetime.
32 3 Symbols and abbreviated terms
33 4.2 Abbreviated terms
34 Add
35 DEL Damage equivalent load, 𝑆𝑆 , determined from the approach that it leads to the same
𝑒𝑒𝑒𝑒
36 damage for a given reference number of load cycles, 𝑛𝑛 , as the real load spectrum
𝑒𝑒𝑒𝑒
37 under the assumption that the damage can be determined on basis of the load cycles
38 from a linear S-N curve with a given slope, 𝑚𝑚. Let the discrete load spectrum be
39 specified by the number of cycles 𝑛𝑛 for the load 𝑆𝑆 , 𝑖𝑖 = 1, 2, … ,𝑛𝑛 . Then the equivalent
𝑖𝑖 𝑖𝑖 𝑆𝑆
40 load can be calculated from the equation
88/982/CDV – 6 – IEC CDV 61400-1:2019/
AMD1 © IEC 2023
1⁄𝑚𝑚
𝑛𝑛
𝑚𝑚
𝑆𝑆
∑
𝑛𝑛𝑆𝑆
𝑖𝑖 𝑖𝑖
𝑖𝑖=1
41 𝑆𝑆 =� �
𝑒𝑒𝑒𝑒
𝑛𝑛
𝑒𝑒𝑒𝑒
43 EM Electro Magnetic
44 EMC Electro Magnetic Compatibility
45 NTM90 Normal Turbulence Model, representative value of 90% percentile value of
46 distribution
47 6.2 Wind turbine class
48 Replace paragraph 2 with
49 Class T assumes all wind model parameters to be the same and allows the combination of Vref,T with
50 all turbulence categories. It does not cover all the areas prone to tropical cyclones. The evaluation of
51 the 1-year return period storm wind speed should be done independently of the 50-year return period
52 storm. A site assessment based on Clause 11 is needed, as a minimum assessing that V50 is below Vref
53 of class T
...
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