SIST EN IEC 61400-50:2022

Wind energy generation systems - Part 50: Wind measurement - Overview (IEC 61400-50:2022)

The IEC 61400 series of standards addresses wind energy generation technical requirements
up to the point of interconnection with the utility grid system. The IEC 61400-50 series of
standards comprises a sub-set of standards which specify the requirements for equipment and
methods to be used in the measurement of the wind.
Wind measurements are required as inputs to various tests and analyses specified in other usecase standards in the IEC 61400 series (e.g. power performance, resource assessment, noise
measurement). Whereas those other standards define use-cases for wind measurements, the
IEC 61400-50 series sets those wind measurement requirements which are independent of the
use-case. Its purpose is to ensure that wind measurements and the evaluation of uncertainties
in those measurements are carried out consistently across the wind industry and that wind
measurements are carried out such that the uncertainties can be quantified and that those
uncertainties are within an acceptable range.
This document provides a general introduction to the options that are available for wind
measurement, which are further detailed in the other parts of the IEC 61400-50 series.

Windenergieanlage - Teil 50: Windmessungen (IEC 61400-50:2022)

Systèmes de génération d’énergie éolienne – Partie 50: Mesurage du vent - Vue d'ensemble (IEC 61400-50:2022)

IEC 61400-50:2022 fournit une introduction générale aux options de mesure du vent disponibles, avec de plus amples informations dans les autres parties de la série IEC 61400‑50. Whereas those other standards define use-cases for wind measurements, the IEC 61400-50 series sets those wind measurement requirements which are independent of the use-case. Its purpose is to ensure that wind measurements and the evaluation of uncertainties in those measurements are carried out consistently across the wind industry and that wind measurements are carried out such that the uncertainties can be quantified and that those uncertainties are within an acceptable range.
La présente première édition de l’IEC 61400-50 fait partie d’une révision structurelle qui annule et remplace les normes de performance IEC 61400-12-1:2017 et IEC 61400-12-2:2013. Cette révision structurelle ne contient aucune modification technique par rapport à l'IEC 61400-12-1:2017 et l'IEC 61400-12 2:2013. Toutefois, les parties relatives aux mesurages du vent, au mesurage de l'étalonnage du site et à l'évaluation des obstacles et du terrain ont été extraites vers des normes distinctes.

Sistemi za proizvodnjo energije na veter - 50. del: Meritve vetra - Pregled (IEC 61400-50:2022)

General Information

• Status: Published
• Publication Date: 23-Oct-2022
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: IEHT - Electrotechnics - Hydraulic turbins
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Oct-2022
• Due Date: 18-Dec-2022
• Completion Date: 24-Oct-2022
• Ref Project: EN IEC 61400-50:2022 - Wind energy generation systems - Part 50: Wind measurement - Overview

Relations

• Revised: SIST EN 61400-12-2:2013 - Wind turbines - Part 12-2: Power performance of electricity producing wind turbines based on nacelle anemometry
• Effective Date: 29-Nov-2022
• Revised: SIST EN 61400-12-1:2017/AC:2020 - Wind energy generation systems - Part 12-1: Power performance measurements of electricity producing wind turbines (IEC 61400-12-1:2017/COR2:2020)
• Effective Date: 29-Nov-2022
• Revised: SIST EN 61400-12-1:2017 - Wind power generation systems - Part 12-1: Power performance measurement of electricity producing wind turbines (IEC 61400-12-1:2017)
• Effective Date: 29-Nov-2022
• Revised: SIST EN 61400-12-1:2017/AC:2020 - Wind energy generation systems - Part 12-1: Power performance measurement of electricity producing wind turbines (IEC 61400-12-1:2017/COR1:2019)
• Effective Date: 29-Nov-2022
• Revised: SIST EN 61400-12-2:2013/AC:2016 - Wind turbines - Part 12-2: Power performance of electricity-producing wind turbines based on nacelle anemometry (IEC 61400-12-2:2013/COR1:2016)
• Effective Date: 29-Nov-2022
• Revised: SIST EN 61400-12-1:2017/AC:2021 - Wind energy generation systems - Part 12-1: Power performance measurement of electricity producing wind turbines (IEC 61400-12-1:2017/COR3:2021)
• Effective Date: 29-Nov-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 61400-50:2022
01-december-2022
Sistemi za proizvodnjo energije na veter - 50. del: Meritve vetra - Pregled (IEC
61400-50:2022)

Wind energy generation systems - Part 50: Wind measurement - Overview (IEC 61400-

50:2022)
Windenergieanlage - Teil 50: Windmessungen (IEC 61400-50:2022)
Systèmes de génération d’énergie éolienne – Partie 50: Mesurage du vent - Vue
d'ensemble (IEC 61400-50:2022)
Ta slovenski standard je istoveten z: EN IEC 61400-50:2022
ICS:
27.180 Vetrne elektrarne Wind turbine energy systems
SIST EN IEC 61400-50:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61400-50:2022
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SIST EN IEC 61400-50:2022
EUROPEAN STANDARD EN IEC 61400-50
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 27.180
English Version
Wind energy generation systems - Part 50: Wind measurement -
Overview
(IEC 61400-50:2022)

Systèmes de génération d'énergie éolienne - Partie 50: Windenergieanlage - Teil 50: Windmessungen

Mesurage du vent - Vue d'ensemble (IEC 61400-50:2022)
(IEC 61400-50:2022)

This European Standard was approved by CENELEC on 2022-10-04. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

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Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61400-50:2022 E
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SIST EN IEC 61400-50:2022
EN IEC 61400-50:2022 (E)
European foreword

The text of document 88/827/CDV, future edition 1 of IEC 61400-50, prepared by TC 88 "Wind energy

generation systems" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN IEC 61400-50:2022.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2023-07-04

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2025-10-04

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 61400-50:2022 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standard indicated:

IEC 61400-1:2019 NOTE Harmonized as EN IEC 61400-1:2019 (not modified)
IEC 61400-2 NOTE Harmonized as EN 61400-2
IEC 61400-11 NOTE Harmonized as EN 61400-11
IEC 61400-12-1 NOTE Harmonized as EN 61400-12-1
IEC 61400-12-2 NOTE Harmonized as EN 61400-12-2
IEC 61400-13 NOTE Harmonized as EN 61400-13
IEC 61400-50-2 NOTE Harmonized as EN IEC 61400-50-2
IEC 61400-50-3 NOTE Harmonized as EN IEC 61400-50-3
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SIST EN IEC 61400-50:2022
IEC 61400-50
Edition 1.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wind energy generation systems –
Part 50: Wind measurement – Overview
Systèmes de génération d'énergie éolienne –
Partie 50: Mesurage du vent – Vue d’ensemble
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.180 ISBN 978-2-8322-5600-8

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 61400-50:2022
– 2 – IEC 61400-50:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 Symbols, units and abbreviated terms ............................................................................. 7

5 Wind measurement overview ........................................................................................... 8

6 Interfaces between standards .......................................................................................... 9

Bibliography .......................................................................................................................... 12

Figure 1 – Overview of relationship between standards in the IEC 61400-12 and

IEC 61400-50 series ............................................................................................................. 10

Table 1 – IEC 61400 series parts which make reference to wind measurements

previously defined in IEC 61400-12-1 ................................................................................... 11

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SIST EN IEC 61400-50:2022
IEC 61400-50:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WIND ENERGY GENERATION SYSTEMS –
Part 50: Wind measurement – Overview
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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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC 61400-50 has been prepared by IEC technical committee 88: Wind energy generation

systems. It is an International Standard.

This first edition of IEC 61400-50 is part of a structural revision that cancels and replaces the

performance standards IEC 61400-12-1:2017 and IEC 61400-12-2:2013. The structural revision

contains no technical changes with respect to IEC 61400-12-1:2017 and IEC 61400-12-2:2013,

but the parts that relate to wind measurements, measurement of site calibration and assessment

of obstacle and terrain have been extracted into separate standards.

The purpose of the re-structure was to allow the future management and revision of the power

performance standards to be carried out more efficiently in terms of time and cost and to provide

a more logical division of the wind measurement requirements into a series of separate

standards which could be referred to by other use-case standards in the IEC 61400 series and

subsequently maintained and developed by appropriate experts.
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SIST EN IEC 61400-50:2022
– 4 – IEC 61400-50:2022 © IEC 2022
The text of this International Standard is based on the following documents:
Draft Report on voting
88/827/CDV 88/863/RVC

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 International Standard is English.

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.

A list of all parts in the IEC 61400 series, published under the general title Wind energy

generation systems, can be found on the IEC website.

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.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this document using a colour printer.

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SIST EN IEC 61400-50:2022
IEC 61400-50:2022 © IEC 2022 – 5 –
INTRODUCTION

The purpose of the IEC 61400-50 series of standards is to provide uniform methodologies and

requirements that will ensure consistency, accuracy and reproducibility in the measurement of

the wind. In creating the IEC 61400-50 series of standards, a distinction is now made between

the method of measurement of the wind and the various "use-cases" in other parts of IEC 61400

in which those wind measurements are applied (e.g. power performance, noise measurement,

load measurement, resource assessment). It is anticipated that the IEC 61400-50 series of

standards will be applied by:

a) wind turbine manufacturers testing prototype or serial production turbines with the aim of

determining or verifying aspects of the turbine specification where the measured wind is a

necessary input (e.g. power performance, noise, structural loads);

b) wind measurement equipment manufacturers providing instruments, meteorological masts

and mounting hardware to the wind industry;

c) organizations and laboratories providing wind measurement instrumentation calibration

services;

d) technical consultants delivering wind measurement services to wind turbine manufacturers,

wind farm developers and operators, etc.;

e) wind turbine operators who need to verify that stated or required specifications are met and

which require wind measurements as an input;

f) other committees developing standards in the IEC 61400 series which make reference to

the specification of equipment and methods to be used in the measurement of the wind.

This series of related standards provides guidance in the wind measurement methods,

equipment, classification, calibration and uncertainty assessment that can be used in the

delivery of various use-case tests. The standards will benefit those parties involved in the

manufacture, installation planning and permitting, operation, utilization, and regulation of wind

turbines. The technically accurate measurement techniques recommended in these standards

should be applied by all parties to ensure that continuing development and operation of wind

turbines is carried out in an atmosphere of consistent and accurate communication relative to

wind measurement. These standards present measurement, classification and calibration

procedures expected to
...